When your CPU is motivated and gives more than his 100%

Me: doing light browsing.
CPU Fan: increases frequency like crazy.
Me: opens task manager.
Windows 10: 60% cpu usage.
Me: sort processes by cpu usage; sum does not match.
Me: closes iTunes update window.
CPU usage: drops to less than 10%.

The update had already finished and the CPU usage was 60%!!!

WHAT THE HELL ARE YOU DOING, APPLE?

Im trying to brute force a rar i made Long ago, sadly i have forgotten the Passwort.
This is how it looks, when you to run it on the length 8-16 at the Same time(all posibilitys).
lets see how Long it will take.
I say 7 Days at 100% cpu usage😂😂

A Developer is desperate: his java application servers are unresponsive, thousand of dead zombie threads are sucking all cpus, memory is leaking everywhere, garbage collector has gone crazy, the cluster sessions are fucked....

The Developer goes to the closest bridge, ties a stone to his neck and gets ready to jump.

Suddenly a bearded old man with a fiery look runs toward him, yelling:
- stop stop!!!! Your application is not scaling and misconfigured, your servers are melting, cpu usage is not sustainable anymore, but don't despair

The Developer, puzzled, looks at him:
-I've never seen you...how do you know...
- Hey, man, I'm the Devil. I know everything. All your problems are solved. I'll give you magic functions. They are called Lambda.
You'll never have to worry about your servers, scalability, security, configuration and shit.

The Developer seems astonished but relieved:
- Ok, sounds great! let's try it - suddenly suspicion creeps in - hmmmm but you are the Devil....so...you want something back, don't you?
(the Devil nods lightly with a diabolic smile)
- ...and...you want my soul, I guess...
- your soul??? come on!!! - the Devil burst in a laugh - we are in 2019. I don't care about your soul. I want your ass.
- What!???!!!?
- yes, I want to fuck your ass

The Developer, evaluates quickly the situation.
Few moments of pain or slight discomfort (?) in exchange for magic lambda. It could be worth. He accepts.

After a while of rough anal fucking, the devil asks
- Hey, how old are you anyway?
- 45, why?
- Oh jeeez...45!!!??? and you still believe in the devil?

Just added Kotlin plugin to my new android project and what do you know, CPU went to 100% of usage.
Aaand the winner is: Fucking Android Studio!

**A thief never says that he has stealed**
~You can relate norton AV's warning and this~

Today - after a successful launch of my own GitLab-Server - I finished my other project!

It's a Resouce Panel for my Homeserver to check it's stats like:

- CPU usage
- RAM usage
- Network Traffic
- Disk Space

It works like a charm and only need php <3

If you guys want a download link, I'll send one in :)

*Notices that SMPlayer takes a lot of the iGPU and CPU*
*Relaunches SMPlayer to use dedicated Nvidia GPU*
> I don't really want to play videos anymore when running on this card.
> MPlayer crashed by bad usage of CPU/FPU/RAM.
(that last one is an actual log btw)

Alright, got it. I bought this fucking PC just for its fucking "powerful" GPU. It already locked me into using WanBLowS on that piece of garbage. Yet now that NvuDiA piece of garbage is gonna act worse than a fucking paperweight?! Seriously?!!

FUCK YOU NVIDIA!!! Linus Torvalds called your shitty cards shit on Linux.. I call it shit on every fucking OS out there!!! MOTHERFUCKERS!!!

I wish people that made desktop apps would consider cpu and ram usage. "Oh I've just opened... ...let me index your vendor folder and check that I need to update at the same time whilst you only have 20% cpu left and 2GB of RAM remanding :D" no; fuck off. Why don't you wait until there's enough CPU power left to check for your update?

Doing linguistic research where I need to parse 2000 files of a total of 36 GB. Since we are using python the first thing I thought was to implement multi threading. Now I changed the total runtime from three days to like one day and a half. But then when I checked the activity monitor I saw only 20 percent of the CPU usage. After a searching process I started to understand how multi threading and multi processing works. Moral of the story: if you want to ping a website till they block you or do easy tasks that will not use up all power of one core, do multi thrading. If you need to do something complicated that can easily consume all the powers of a single CPU core, split up the work and do multi processing. In my case, when I tried to grab information from a website, I did multi thrading since the work is easy and I really wanted to pin the website 16 times simultaneously but only have 4 cores. But when it come to text processing which a single file will take 80 percent of cpu, split it up and do multi processing.

This is just a post for those who are confused with when to use which.

TL;DR
I accidentally surpassed(?) my user permissions and closed some of my classmates browsers and locked up a terminal for me

In school we have 2 primary operating systems: Windows and Ubuntu. Windows is hell in general and but not as hell as the firefox installation on Ubuntu.

"Just loaded this page. Now wait half a minute so that I can render it"
"Woah, woah, woah. Slow there. You just made an input event. Give me those 5 seconds to compute what you just did"

Executing "top" or "htop" shows you a long list of firefox processes with a cpu usage of 99.9%, since the whole school shares that linux environment.

Anyway, one day it was way more servere than normally and I way forced to kill my firefox instances. So I pressed CTRL+ALT+T for that terminal, waited 5 minutes until it accepted input typed "killall firefox" with a delay of half a minute per character and smahed that enter key.

At this very point in time I could hear confusion from every corner of the room. "What happened to firefox?"

Around 30% of the opened browsers where abruptly stopped. I looked back to my screen noticed I was logged out. I couldn't login from that terminal for the rest of that day.

Our network admin, which happened to be there, since the server is just next door, said that this was just convenience, but the timing was too perfect so I heighly doubt that.

I felt like a real hackerman even if it was by accident :)

My mom's laptop is always on 80-90% CPU even in idle and it is obviously hella slow and I am the one who has to work with it usually (since my mom is too afraid to use any kind of technology and can't remember any of her passwords), I tried to solve it but I came to the conclusion that the problem is probably Windows 10 itself. Okay, the hardware is bad too but still.

I started thinking about installing Linux on it, but It's not my laptop and I do not want to mess it up and I never did it before.

So I saw an article where in the author mentioned that "how will we earn money when there are so many adblock users, indirectly blocking out income, so we had to take some measures and that how we initiated coinhive on our websites, where in, it uses minimal cpu power for coin mining of every user that visits that webpage"

WTF, saying minimal, some users commented their saying they experienced sudden over usage of cpu cores and rise in temps while visiting the websites.

How do you justify such behavior, I feel kinda biased as I feel bad for them, but on the other hand, they just shouldn't rely on writing articles as a job/source of income

Today was a day at work that I felt like I made a significant contribution. It was not a lot of code. Actually it was a difference of 3 characters.

I am developing an industrial server so that my employer can provide access to their machines to enterprise industrial systems. You know, the big boys toys. Probably in fucking java...

Anyway, I am putting this server on an embedded system. So naturally you want to see how much serving a server can serve. In this case the device in more processor starved than memory starved. So I bumped up the speed of the serving from 1000mS to 100mS per sample. This caused the processor to jump from 8% of one core (as read from top) to 70%. Okay, 10x more sampling then 10x approx cpu usage. That is good. I know some basic metrics for a certain amount of data for a couple of different sampling rates.

Now, I realized this really was not that much activity for this processor. I mean, it didn't seem to me that it "took much" to see a large increase of processor usage. So I started wondering about another process on the system that was eating 60 to 70 % all the time. I know it updated a screen that showed some not often needed data from its display among controlling things. Most of the time it will be in a cabinet hidden from the world. I started looking at this code and figured out where the display code was being called.

This is where it gets interesting. I didn't write this code. Another really good programmer I work with wrote this. It also seemed to be pretty standard approach. It had a timer that fired an event every 50mS. This is 20 times per second. So 20 fps if you will. I thought, What would happen if I changed this to 250mS? So I did. It dropped the processor usage to 15%! WTF?! I showed another programmer: WTF?! I showed the guy who wrote it: WTF?! I asked what does it do? He said all it does it update the display. He said: Lets take to 1000mS! I was hesitant, but okay. It dropped to 5%!

What is funny is several people all said: This is running kinda hot. It really shouldn't be this hot.

Don't assume, if you have a hunch, play with it if its safe to do so. You might just shave off 55 to 60 % cpu usage on your system.

So the code I ended up changing: "50" to "1000".

Spent a month working on a website that relied on crawled data
Got the memory leaks and usage down from 700mb to ~150mb
CPU usage from ~100% to <5%
Shrink-wrapped the DB requirements based on data
Created self-supporting services and what not

When everything FINALLY worked good enough for me to look at it and go "damn, this actually worked"
the whole monitoring sys got dyed in red :v
A quick look up and my crawlers exhausted my godaddy's per-user db limits.

Kill me.
Just fuckin kill me.

Fucking piece of shit windows 10!
Screw you to hell!
Disk usage : 100%
Memory usage: 60%
CPU usage: 2%

Sluggish as hell! And downloading updates without even asking! How fucking dare you!

Stuck with this shit just because of Photoshop and Illustrator.

I had spent the last year working on a online store power by woocommerce with over 100k products from various suppliers. This online store utilized a custom API that would take the various formats that suppliers offer their inventory in and made them consistent. Now everything was going swimmingly initially, but then I began adding more and more products using a plug-in called WP all import. I reached around 100k products and the site would take up to an entire minute to load sometimes timing out. I got desperate so I installed several caching plugins, but to no avail this did not help me. The site was originally only supposed to take three to four months but ended up taking an entire year. Then, just yesterday I found out what went wrong and why this woocommerce website with all of these optimizations was still taking anywhere from 60 to 90 seconds to load, or just timing out entirely. I had initially thought that I needed a beefier server so I moved it to a high CPU digitalocean VM. While this did help a little bit, the site was still very slow and now I had very high CPU usage RAM usage and high disk IO. I was seriously stumped the Apache process was using a high amount of CPU and IO along with MYSQL as well. It wasn't until I started digging deeper into the database that I actually found out what the issue was. As I was loading the site I would run 'show process list' in the SQL terminal, I began to notice a very significant load time for one of the tables, so I went to go and check it out. What I did was I ran a select all query on that particular table just to see how full it was and SQL returned a error saying that I had exceeded the maximum packet size. So I was like okay what the fuck...
So I exited my SQL and re-entered it this time with a higher packet size. I ran a query that would count how many rows were in this particular table and the number came out to being in the millions. I was surprised, and what's worse is that this table belong to a plugin that I had attempted to use early in the development process to cache the site. The plugin was deactivated but apparently it had left PHP files within the wp content directory outside of the actual plugin directory, so it's still executing scripts even though the plugin itself was disabled. Basically every time I would change anything on the site, it would recache the whole thing, and it didn't delete any old records. So 100k+ products caching on saves with no garbage collection... You do the math, it's gonna be a heavy ass database. Not only that but it was serialized data, so when it did pull this metric shit ton of spaghetti from the database, PHP then had to deserialize it. Hence the high ass CPU load. I had caching enabled on the MySQL end of things so that ate the ram. I was really desperate to get this thing running.
Honest to God the main reason why this website took so long was because the load times made it miserable to work on. I just thought that the hardware that I had the site on was inadequate. I had initially started the development on a small Linux VM which apparently wasn't enough, which is why I moved it to digitalocean which also seemed to not be enough, so from there I moved to a dedicated server which still didn't seem to be enough. I was probably a few more 60-second wait times or timeouts from recommending a server cluster to my client who I know would not be willing to purchase it. The client who I promised this site to have completed in 3 months and has waited a year. Seriously, I would tell people the struggles that I would go through with this particular site and they would just tell me to just drop the site; just take the money, just take the loss. I refused to, this was really the only thing that was kicking my ass. I present myself as this high-and-mighty developer like I'm just really good at what I do but then I have this WordPress site that's just beating the shit out of me for a year. It was a very big learning experience and it was also very humbling as well, it made me realize that I really don't know as much as I think I might. It was evidence that there is still so much more to learn out there, I did learn a lot from that experience especially about optimizing websites the different types of methods to do that particular lonely on the server side and I'll be able to utilize this knowledge in the future.
I guess the moral of the story is, never really give up. Ultimately things might get so bad that you're running on hopes and dreams. Those experiences are generally the most humbling. Now I can finally present the site that I am basically a year late on to the client who will be so happy that I did not give up on the project entirely. I'll have experienced this feeling of pure euphoria, and help the small business significantly grow their revenue. Helping others is very fulfilling for me, even at my own expense.

Anyways, gonna stop ranting. Running out of characters. If you're still here... Ty for reading :')

Currently playing "the IT guy" for my uncle. I'm supposed to "speed up" the laptop. It's a low tier Toshiba from about 5 years ago, that while idle sits at about 100% CPU usage and 80% RAM usage.
From what I can tell, it has NEVER been turned off since I set it up for him 4 years ago, or unplugged..

After a few weeks of being insanely busy, I decided to log onto Steam and maybe relax with a few people and play some games. I enjoy playing a few sandbox games and do freelance development for those games (Anywhere from a simple script to a full on server setup) on the side. It just so happened that I had an 'urgent' request from one of my old staff member from an old community I use to own. This staff member decided to run his own community after I sold mine off since I didn't have the passion anymore to deal with the community on a daily basis.

O: Owner (Former staff member/friend)
D: Other Dev

O: Hey, I need urgent help man! Got a few things developed for my server, and now the server won't stay stable and crashes randomly. I really need help, my developer can't figure it out.
Me: Uhm, sure. Just remember, if it's small I'll do it for free since you're an old friend, but if it's a bigger issue or needs a full recode or whatever, you're gonna have to pay. Another option is, I tell you what's wrong and you can have your developer fix it.
O: Sounds good, I'll give you owner access to everything so you can check it out.
Me: Sounds good

*An hour passes by*

O: Sorry it took so long, had to deal with some crap. *Insert credentials, etc*
Me: Ok, give me a few minutes to do some basic tests. What was that new feature or whatever you added?
O: *Explains long feature, and where it's located*
Me: *Begins to review the files* *Internal rage wondering what fucking developer could code such trash* *Tests a few methods, and watches CPU/RAM and an internal graph for usage*
Me: Who coded this module?
O: My developer.
Me: *Calm tone, with a mix of some anger* So, you know what, I'm just gonna do some simple math for ya. You're running 33 ticks a second for the server, with an average of about 40ish players. 33x60 = 1980 cycles a minute, now lets times that by the 40 players on average, you have 79,200 cycles per minute or nearly 4.8 fucking cycles an hour (If you maxed the server at 64 players, it's going to run an amazing fucking 7.6 million cycles an hour, like holy fuck). You're also running a MySQLite query every cycle while transferring useless data to the server, you're clusterfucking the server and overloading it for no fucking reason and that's why you're crashing it. Another question, who the fuck wrote the security of this? I can literally send commands to the server with this insecure method and delete all of your files... If you actually want your fucking server stable and secure, I'm gonna have to recode this entire module to reduce your developer's clusterfuck of 4.8 million cycles to about 400 every hour... it's gonna be $50.
D: *Angered* You're wrong, this is the best way to do it, I did stress testing! *Insert other defensive comments* You're just a shitty developer (This one got me)
Me: *Calm* You're calling me a shitty developer? You're the person that doesn't understand a timer, I get that you're new to this world, but reading the wiki or even using the game's forums would've ripped this code to shreds and you to shreds. You're not even a developer, cause most of this is so disorganized it looks like you copy and pasted it. *Get's angered here and starts some light screaming* You're wasting CPU usage, the game can't use more than 1 physical core, and after a quick test, you're stupid 'amazing' module is using about 40% of the CPU. You need to fucking realize the 40ish average players, use less than this... THEY SHOULD BE MORE INTENSIVE THAN YOUR CODE, NOT THE OPPOSITE.
O: Hey don't be rude to Venom, he's an amazing coder. You're still new, you don't know as much as him. Ok, I'll pay you the money to get it recoded.
Me: Sounds good. *Angered tone* Also you developer boy, learn to listen to feedback and maybe learn to improve your shitty code. Cause you'll never go anywhere if you don't even understand who bad this garbage is, and that you can't even use the fucking wiki for this game. The only fucking way you're gonna improve is to use some of my suggestions.
D: *Leaves call without saying anything*

TL;DR: Shitty developer ran some shitty XP system code for a game nearly 4.8 million times an hour (average) or just above 7.6 million times an hour (if maxed), plus running MySQLite when it could've been done within about like 400 an hour at max. Tried calling me a shitty developer, and got sorta yelled at while I was trying to keep calm.

Still pissed he tried calling me a shitty developer...

Okay, so today I've taught a colleague how to use a simple office ruler to measure AWS server's CPU usage :) We needed to figure out whether CPU% spikes correlate with error message in logs an d latency spikes. Once again a ruler was the perfect tool for the job.

P.S. no, CPU% spikes did not correlate to errors in logs

What a difference three lines of code can make. That's the typical case of "that seemed to be a good idea". I don't know how did I think it would work out on the long run. Next step will be reduceing the enourmous CPU usage as well.

Ran a script on production to scrape ~1000 sites continously and update our ~50.000 productions from the data. On the same server as our site was running. Needless to say, with traffic and scraping, our server had almost 100% CPU and ram usage all the time for 2 weeks until I realised my fuckup

While checking out CPU usage on my android a weird process called dex2oat popped up. Curious about it. I did some research. This is what I found.

Absolutely fascinating stuff

Why do I program everything myself in C, even a rest service? By writing everything yourself in C you make simple things complex to make complex things simple.

Writing a rest service for example learns you a part of http protocol, how sockets work, how to create a parser (in this case json). Three thing's you would miss if I used python.

On top, your rest service uses WAY lesser resource than written in python for example. Especially for CPU usage.

Allocating and free-ing still often have issues there, but I consider it a skill problem / discipline issue. Not blaming C for that. The rules are clear.

So not too long ago I made a rant about this time I told my superiors of a problem and it got shot down because "We don't want to save developer time".

I warned them that the CPU was going to reach it's limit because the issue involves exponential growth on CPU usage the more we develop.

As it turned out, despite my thoughts that we wouldn't reach that limit for over a year, a new development led to it blowing up in their face today.

I am now treated as the expert on the topic and they're rushing to plan my suggested implementation in the next release.

I'm mildly amused.

My 27" 8-core imac, i7, 3.8ghz, AMD radeon pro 5500, 40 GB RAM 512 GB storage,

keeps screaming in agony.

But never stuttered.
Never lagged.
Never glitched
Never failed
Never ran out of memory

I can just hear how hard the the ventilation was going. It was getting loud.

I touched its ass from behind. It was heated up and there was lots of dust from the holes

This has been going on for several days but i ignored it knowing what kind of a beast machine i have (big mistake)

Intellj popped up notification to disable hints in order to improve cpu usage performance.

Immediately it struck me. Hold on lemme check the activity monitor stats and find out why my imac has been screaming for days

Turns out intellj is using over 1090% of my fucking CPU?????

THAT SHIT U SEE ON THE IMAGE WENT ABOVE 1100% OF CPU USAGE AND IT WAS ONLY 1 PROCESS CAUSING IT - INTELLIJ

WHAT???

I just realized one of today's emails is asking to review again that spaghetti program and this time figure out how to optimize performance because it is getting flagged for high cpu and database usage. A Niagra of If-statements and nobody-cares-for-comments-and-technical-documentation.

*bleep* *bleep* *bleep* previous programmer.

I'll deal with this torture on Monday.

It's kinda cool how a $5 VPS (Linode Nanode) is able to run a vanilla Minecraft Spigot server for like 6-7 people and still can serve some basic stuff just fine. I get monitoring warnings about >90% CPU usage sometimes, but everything is more or less lagless.

Time to try hosting some other games: CS1.6, Doom Classic, and UT2004 up next.

This cryptocurrencies madness.

My CPU usage gone wild only for accessing 1 goddamn news website

Fuck you coin-have.com to provide the tools to those greedy scumbags

So we work on a Vmware network. And besides the terrible network lag. The specs of that VM is one core (Possibly one thread of a xeon core) and 3 GB RAM.

What do we do on it?
Develop heavy ass java GUI applications on eclipse. It lags in every fucking task. Can't even use latest versions of browsers because the VM is a fucking snail ass piece of shit!

So, in the team meeting I proposed to my manager, Hey our productivity is down because of this POS VM. Please raise the specs!.

He said mere words won't help. He needs proof.

Oh, you need proof ? Sure. I coded up a script that all of my team ran for a week. That generates a CSV with CPU usage, mem left, time - every 10 min. I use this data to show some motherfucking Graphs because apparently all they understand is graphs and shit.

So there you go. Have your proof! Now give me the specs I need to fucking work!

!dev

Guys, we need talk raw performance for a second.

Fair disclaimer - if you are for some reason intel worker, you may feel offended.

I have one fucking question.
What's the point of fucking ultra-low-power-extreme-potato CPUs like intel atoms?

Okay, okay. Power usage. Sure. So that's one.

Now tell me, why in the fucking world anyone would prefer to wait 5-10 times more for same action to happen while indeed consuming also 5-10 times less power?

Can't you just tune down "big" core and call it a day? It would be around.. a fuckton faster. I have my i7-7820HK cpu and if I dial it back to 1.2Ghz my WINDOWS with around lot of background tasks machine works fucking faster than atom-powered freaking LUBUNTU that has only firefox open.

tested i7-7820hk vs atom-x5-z8350.

opening new tab and navigating to google took on my i7 machine a under 1 second, and atom took almost 1.5 second. While having higher clock (turbo boost)

Guys, 7820hk dialled down to 1.2 ghz; 0.81v
Seriously.
I felt everything was lagging. but OS was much more responsive than atom machine...

What the fuck, Intel. It's pointless. I think I'm not only one who would gladly pay a little bit more for such difference.

i7 had clear disadvantages here, linux vs windows, clear background vs quite a few processes in background, and it had higher f***ng clock speed.

TL;DR
Intel atom processors use less power but waste a lot of time, while a little bit more power used on bigger cpu would complete task faster, thus atoms are just plain pointless garbage.

PS.
Tested in frustration at work, apparently they bought 3 craptops for presentations or some shit like that and they have mental problems becouse cheapest shit on market is more shitty than they anticipated ;-;
fucking seriously ;-;

FUUCCKKKK!! I need to hit smth. Or rant..

So that flaky ec2 issue.. These ec2s act as a shared environment for multiple apps. Our app is one of them. I have no access to those ec2s at all.

What I have access to is my app and some monitoring. Now the app randomly starts lagging while nearly idling. At the same random times monitoring stops completely and doesn't come back up. This happens to random app instances at random times.

Reached out to infra support, managed to get attention from the big boys [mgmt]. Today we got the fix deployed. I test it out -- problem persists.

I find this behaviour somewhat familiar. Managed to get some server stats from infra folks. Apparently cpu% is high as well as load avg [cpu queue]. Bingo! I know how to fix it!

So I write a long comment w/ all the commands and all the 'if that, do this'. Send it to one of the infra technitians

and I get a reply: 'we will apply cpu usage limitations to fix the issue'

wait... Cpu% limitations will do nothing but highlight the underlying problem...

'no, instances have high cpu utilisation which is causing those lags. We will limit cpu resources and it will be fixed'

oh ffs... Cpu utilization and cpu queue are VERY different things.. I tried explaining that to them like 7-9 times. And all I get is:

'yes, cpu utilization is the problem. We will limit it and solve the problem'

I would surely escalate all of this through higher channels if only I could get my hands on those ec2s and have a proof. But that is not happening and I'm forced to sit back and watch them break things even worse until they are out of options and mark my query as 'wont fix'....

Fuck that's frustrating....

*thinking to myself* so I've read about that new vulnerability 2 days ago that allows one to escape from docker container to the host... What if <...>

Is your code green?

I've been thinking a lot about this for the past year. There was recently an article on this on slashdot.

I like optimising things to a reasonable degree and avoid bloat. What are some signs of code that isn't green?

* Use of technology that says its fast without real expert review and measurement. Lots of tech out their claims to be fast but actually isn't or is doing so by saturation resources while being inefficient.
* It uses caching. Many might find that counter intuitive. In technology it is surprisingly common to see people scale or cache rather than directly fixing the thing that's watt expensive which is compounded when the cache has weak coverage.
* It uses scaling. Originally scaling was a last resort. The reason is simple, it introduces excessive complexity. Today it's common to see people scale things rather than make them efficient. You end up needing ten instances when a bit of skill could bring you down to one which could scale as well but likely wont need to.
* It uses a non-trivial framework. Frameworks are rarely fast. Most will fall in the range of ten to a thousand times slower in terms of CPU usage. Memory bloat may also force the need for more instances. Frameworks written on already slow high level languages may be especially bad.
* Lacks optimisations for obvious bottlenecks.
* It runs slowly.
* It lacks even basic resource usage measurement.

Unfortunately smells are not enough on their own but are a start. Real measurement and expert review is always the only way to get an idea of if your code is reasonably green.

I find it not uncommon to see things require tens to hundreds to thousands of resources than needed if not more.

In terms of cycles that can be the difference between needing a single core and a thousand cores.

This is common in the industry but it's not because people didn't write everything in assembly. It's usually leaning toward the extreme opposite.

Optimisations are often easy and don't require writing code in binary. In fact the resulting code is often simpler. Excess complexity and inefficient code tend to go hand in hand. Sometimes a code cleaning service is all you need to enhance your green.

I once rewrote a data parsing library that had to parse a hundred MB and was a performance hotspot into C from an interpreted language. I measured it and the results were good. It had been optimised as much as possible in the interpreted version but way still 50 times faster minimum in C.

I recently stumbled upon someone's attempt to do the same and I was able to optimise the interpreted version in five minutes to be twice as fast as the C++ version.

I see opportunity to optimise everywhere in software. A billion KG CO2 could be saved easy if a few green code shops popped up. It's also often a net win. Faster software, lower costs, lower management burden... I'm thinking of starting a consultancy.

The problem is after witnessing the likes of Greta Thunberg then if that's what the next generation has in store then as far as I'm concerned the world can fucking burn and her generation along with it.

Working with acutal BigData. Will be ''promoted'' to a new team where I will work on a system wrote in php+mysql with literal millions of requests and database rows. We are currently seeing server crashes around once a week on peak usage. Stack is a vps 64gb ram server + i dont know how many cpu/ cores. Apache, php, mysql.Best ways to optimise and adapt in this case? Kafka? Rabbitmq?ngnix? More hardware?

I'm pretty sure istockphoto is mining bitcoin! Visited that website twice and the damn VM started freezing and CPU usage went up to 70% ....

Alright ladies and no so gentle men...

The time has come for me to ditch dropbox (Because fuck wanting to use ext4 and also have some spare CPU usage when syncing a single fucking file) and migrate everything from my art storage to some old prototypes into private github repo's...

Prepare to see a shit tonne of rants about me forgetting how to git and all that kinky shit...

Wish me luck *salutes*

This will be my last project ever with WordPress. Seems like they added a site "customizer" (wysiwyg) which looks fancy and all, but after a few minutes configuring options the customizer starts lagging, fan starts getting louder, CPU & RAM go up so I do some profiling on that page:

Full layout repaints on every mousemove event, mem usage starts at 125MB and goes up up up to even 200MB while staying idle.. wtf? How did this even get shipped?

Looks like my users are enjoying themselves. Bringing my poor dedicated server to a load average of 72/8 at full CPU usage.

If only I wasn't just running an open source project by myself with only crowd-source money to rely on for server costs :v

So, whenever I delay windows 10 update restart a few times, things start breaking. Wifi doesn't work, 100% cpu, ram or mem usage, sound problems etc. And all this goes away once I submit my soul and update. I'm sick of this shit 😡. Today I got a BSOD after which it updated and things seem fine FOR NOW.
Does this happen to other Win 10 users?

I wrote a Rust script in 10 minutes or so that processes several GiB's big ISO files and it calculates its values so fast, that most time is spent waiting for the HDD! Look at the CPU usage and the disk read/write stats :D

(No, the picture is not fake, it's a real screenshot from my desktop edited with Gimp)

So just sitting here watching my windows VM's cpu usage to monitor was seems to be causing some stuttering and then out of fucking nowhere the default photo's app pops and and claims 96% of the CPU...

I understand computers are weird but how the hell does an app randomly start and jump to such a high CPU usage?

Docker for Mac loves burning my CPU. Even if I delete all images and containers and do a fresh reinstall and JUST have Docker for Mac running, I always see crazy CPU usage on my Late 2016 15" Macbook Pro.

Ibl started rendering a video and my CPU usage is mostly above 100%. Classic Windows!

Just tried the new PYCHARM update

Honestly speaking I was a bit disappointed with the update as a whole.

Firstly, I it didn't recognize conda as the default development environment and moreover it didn't let me switch from virtualenvs also it took away my in built terminal option and to further aggravate my miseries the performance of the IDE as a whole had fallen quite a bit for instance at one point the ide alone was using around 1.5GiB of RAM and a huge
chunk of my CPU usage

So it's 2018, I thought let's start working with Android Studio on Ubuntu. [Due to some guy who posted his CPU usage on a very heated rant of same issue]
I realized it's fucking mess(/shit) and you dare not keep any browser open in back/fore-ground. Now, my entire system is stuck.
Ruined the first day man.

1 tab of a crappy payment site in firefox takes 128% of my CPU ? wtf...

CPU usage 99%; Plunker.

Changed refresh rate of my KDE widgets from 1 to 5 seconds.

No more 12% cpu usage spikes in idle. (Down to 3%)

I think that my battery will thank me

Regarding my previous rant where I shit talked about ubuntu 17.10

So instead of downgrading I tried a last chance (why not, system was fucked already) by installing unity, yes the same shit that ubuntu team removed from ubuntu 17.10 as major upgrade.

Well, it turns out gnome shell was taking more than half of my cpu in idle state and this unity barely reaches above 10%

Life lesson learnt: not every upgrade is better

Same goes for android studio, let's save it for another rant

After waiting for almost a month, yesterday I went to check on how my computer was doing, since I hadn't got any messages or calls ever since.
I go to the store and ask one of the workers about how my laptop is doing, and that I'd left it there almost a month ago and that they'd tell me when it was time to get the papers and then the laptop itself. The girl asks me for my phone number and then my name, and found nothing on the computer. She goes somewhere inside the store and comes back with a colleague, who tells me that I need a process paper. I pull out the receipt the technician photocopied and signed because that was the only thing I had. I hadn't touched that part of my paste for the whole time after I left the computer there and I was 100% sure I didn't have the process paper with me until he started pressing me for it. I kept repeating that the technician told me that they'd call or message me when said process paper was ready, which I hadn't got any of those to go pick it up. The guy asks me if that were the number and name I'd given the tech guy and I said yes. Both of them disappear into the store again. They come back with a cardboard box and say that the surname written there was wrong by a char (as I've said before my name is unusual, and my surname is also unusual where I'm studying, but where I'm from there's like 5 or 6 families with that surname), so that's why they couldn't find it in the computer. After that they went through all the details I gave on the time of handing the PC and the number they told me was there was off by miles. I think I may have said a wrong digit but that number was way off. There should be some person who got calls or messages about a computer they don't even own LoL
They told me to try it and see if it was running OK and that I had 15d to go back if something was wrong
When I got home I turned it on, afraid it would start dying on me again LoL
I pass the login screen and the fan just starts working really hard and I'm worried. The ASUS guys reinstalled Win8 and the CPU is running wild already, going at about 3,5 GHz (2,5 max) and over 30% usage on nothing
After some minor inconveniences (making the USB with Win10 took longer than expected) I finally installed Win10 and the CPU usage drops to < 10% and runs at way below the 2,5 GHz max. It constantly uses <= 10-15% CPU and the fan makes no noise unless I put in a heavier game (like Oxygen Not Included - it asks for 4GB RAM minimum 8I), in which case it goes up a bit and runs at around 3 GHz, but it doesn't make as much noise as before, thank jesus. I'm gonna keep trying to see how it does and hope I don't have to go back to the store after the next 15d 8I
I can finally work and not be a leech on my friends because my old toshiba - which I forgot I'd brought with me to uni - is really old and it makes a lot of noise (the fan is constantly working too much but it's so old I don't bother anymore) and it heats my room a lot, so it's gonna be a nice change of pace HaHa

TL:DR linux newbie, looking for advice/links (skip to bottom for questions)

!rant
After i had been looking for a job for quite some time, a couple of months ago i got hired by "smaller" company doing web stuff. So far it have been a great place, good colleagues, and overall just having a great time!.
They seem to value me alot, so that's great!.

Anyway, yesterday i got called into a meeting - and got told they wanted me to start learning "Server stuff (linux)". That got me quite excited, because it always was something i wanted to learn - but never really got around to doing.

But i never touched a linux installation before, so i'm really on ground zero - but im not afraid, i'm a quick learner and quite efficient at googling :)

I figured i would ask here, since other people here always seems to be happy to help other people out.

So far i have manage to setup a server, install various stuff (php, mysql and so on) and done setup a couple of domains/subdomains on my server. Also got a vestacpinstallation working - so overall im quite happy so far.

I figured maybe somebody had some good links/advice for a linux newbie :).

* Performance/Security, will obviously be a big focus - anything i should look at? - any must look at?
* Monitoring tools, how do i monitor various websites running on my server? Here i'm thinking bandwitch, cpu/ram usage and so on pr site basis.
* Any other stuff i should be looking at?

Little about what the server will/should be running :)

* Centos
* vestacp
* WordPress installations only (e-commerce mainly)
* PHP 7 / MySQL / phpmyadmin

*Creates a random .NET core console application on windows*

Alright, I've created this in Dropbox til I get some traction with it..

*Edits a few things, saves project and syncs files then open's project on mac later that night*

And some more progress, brilliant, save and done..

*Turns on pc next day and see's dropbox taking 80% CPU usage and %20 disk usage*

What the fuck! Ok ctrl alt delete to the rescue!

*Notification pops up saying Dropbox deleted over 20, 000 files*

Well... Aren't we off to a fucking great start .NET Core...

(Yes I know I can get all files back, done and done and can't actually 100% pin it down to .NET Core..)

Fuck Antimalware Service Executable.
All my homies hate Antimalware Service Executable.

I hope I can hop into Linux before this happens to my personal computer.

Why windows why.... This is windows updates lowest cpu usage today.... I've had my PC running for about 6 hours and still I'm unable to install any update....

CPU time? Wayland, or Linux.

I/O? Firefox or VSCode. If I'm pedantic about not counting dispatch as usage then VSCode because Firefox is just a mediator between me, the OS and the webapp at hand.

My server has constaly 40% CPU usage.... Even when there are NO requests.

I'm searching "wtf is going on" for the past 2 days.

0 results. Clients are unhappy, sales team is unhappy. Noone is happy and I don't have an answer. Grrrrrrr.

*Goes back to reading logs

By server I mean Azure WebApp, not a VM/ohysical server

Since the last update of the company antivirus some things became terribly slow, like IE dev tools, they are standard slow, but now they ere horribly slow, copying a 500MB file over the network to my pc now takes 10 minutes and the worst part is git. Git is unusably slow so i can't use git-tfs anymore and have to use standard TFS again.
And whenever all of this is happening there is always the same thing on the top spot of CPU usage 'trend micro unauthorized change prevention service'.
Oh how I hate that antivirus crap

Switched from Chrome to Firefox, and my CPU usage literally dropped from 80% to less than 10%. How is this possible?

!rant #tip

Windows 10 - service host high cpu usage

Stop the superfetch service and it would be down to normal.

You should checkout the description of the superfetch service... Lol ):D

*The one where he breaks ssh*

TL;DR: Minikube's dick is too big, and my ass wasnt ready.

So there was a time about 2 weeks ago where i wanted to try and set up a minikube cluster using SOP, and that actually went okay, aside from having to move over to a completely different server after discovering that my processor doesn't support virtualization.

So i set it up on my other server, and everything immediately starts going to shit; i can no longer run commands without processor latency. Also top shows 200% CPU usage. Maybe i should stop... NAHHH... so i continue on, and the biggest fuck up was starting up the nginx pods. I have 6 of them, and the moment i try and stand up my custom container which was the WHOLE POINT of this whole exercise, i lose ssh access and cant get back in. I go over to the server and kill the minikube and virtualbox processes, and everything's back to normal.

Chrome Helper is sucking up 100℅ CPU. Again. Why oh why oh why oh why?

It's 5 o'clock on a Friday... I'm calling it quits.

!rant // more like a warning
If you use tty (no X or graphic env) and use tmux as terminal multiplexer -> avoid using mpv in it.
.
When you use -> mpv --vo=drm "video name" in tmux session and want to pause video -> cpu usage will climb up to 100% on single core.
(can make laptop warm)
(I don't know what exactly cause this but my theory is, tmux cant redraw after video is pause and it keep trying forever and end up using cpu 100% on single core)
.
Solution
- use mpv on another tty which you didn't run tmux.
- example : tty1: all stuff, tty2: mpv.
And cpu usage will be normal after video is pause.

I hate Intellij Idea but it's best option available to develop in Scala. Improvements in VSCode/Metals is my last hope.

The (few) things I NEED from Intellij:
* Very good autocompletion
* Refactoring tools (renaming, auto imports)
* Search tools (find usages, sub/super-types)

The (many) things I hate of Intellij:

* Layout with panel sizes doesn't behave properly and it scales instead of remaining fixed.

* Tedious 2-hands shortcuts makes the right hand to move a lot from the mouse

* Delays and lag in the UI, freezes on garbage collection

* High memory consumption, high CPU usage and generally slow and cumbersome

* The delay in the UI between commands is so that it's accidentally possible to introduce typos

* Can't move tabs around and organize them as I like

* Ugly font rendering and missing typography settings

* Multi-caret implementation as a different editing mode is annoying because requires frequent switching

* Unnatural code folding regions, why method arguments are not folded with the method?

* Unhelpful support forum, sometimes dismissive answers

* Highlighting of current word under the caret doesn't work

* Very slow editor, can't keep spacebar pressed to move text or it hangs!

* Several settings reset at every update. Like the auto fetch of git

* New features are added and enabled by default which is very invasive

* Some of the features mentioned above are really annoying and it's not possible/not trivial to disable them

* It uses its own compile and several times it highlights false positives

Tl;Dr:
The new windows subsystem for Linux might severely slow compilation time for me.

Microsoft is releasing a preview of WSL 2 which works fundamentally different to WSL 1, which I currently use.

For those who don't know, WSL (or Windows Subsystem for Linux) used to be a compatibility layer, which "translated" Linux syscalls to Windows syscalls. This enables the execution of Linux applications on Windows. The new WSL (WSL 2) doesn't do any of that, instead, it is a highly optimised Virtual Machine.

So don't get me wrong from a performance point of view there is no Issue, RAM and CPU usage is truly astonishingly small and performance of Linux applications is much improved over WSL 1.

BUT, apparently, accessing files stored on Windows through Linux is now piss slow.

Great, truly outstanding.

Why is this a problem? Well, I use WSL to develop c++ Linux applications using CLion, the way this works is that you set up an ssh server in WSL, which CLion uses to do compilations.

One _needs_ to have the project files stored on Windows as otherwise CLion on Windows can't access them.

If I wanted a Linux VM I would have installed one.

Urgh.

Does nextjs have any Performance monitoring tools i can use to debug?

When i npm run dev and login it jumps to 300-600% CPU usage and remains like that until i restart the app. Why is this happening

How do u even begin to debug this...?

Jesus fucking christ, fuck angular sometimes ... most of the times. just fuck it

And fuck me even more for writing such shit components when I started out with it.

Takes forever to find the shit that isn't working due to angulars magic change detection and the shittx performance of local dev environment.

Has to run in JIT because the app it too big, and then it takes 10 sec to build everytime you change something. And during that time i get a 100% cpu usage which kills vscode so I cant do anything properly

fuck it, i just wanna have a nice weekend now

Somebody please explain to Microsoft Win 10 team that normal usage of a computer should just work, home users don't have hours on end to spend on dealing with:

- BS sound drivers
- high CPU usage & diagnosing, log tracing from system processes
- many other crap you need to invest time constantly fixing or you don't have a useful machine

Windows 10 is a piece of shit

This happened to me sometime back.

I want to try out a WordPress plugin in my local machine before installing on a production server. It is an Ubuntu machine. Downloaded and installed Xampp, then setup WordPress with MySQL. Now tried uploading the plugin zip file, it throws some permission error, asking to fix permissions or use FTP. I thought of just chmod 777 recursively for the WordPress directory to fix this easily.

Ran the command, looks like it is hung. Terminated using Ctrl+C and then ran the same command. Again it is taking much time. It should not take so much time to recursively change the permission of just a WordPress directory. Thought something was wrong. Before I realized the damage is already done.

Looks like I ran the command

sudo chmod -R 777 /

instead of

sudo chmod -R 777 ./

Fuck, I missed a dot in the command and it is changing permissions of everything in my machine. Saw the System monitor, CPU usage spiked to 100%. I can't close or open any program. Force shutdown the machine using the power key. It didn't boot again. Recovery mode didn't help. Looks like there is no easy way to restore back from this damage. Most of the files I need are backed up in the cloud, still, need a few more personal files so that I can format and reinstall Ubuntu. Realised I have Windows in dual booting. Boot into Windows and used some ext4 reader to recover the files, formatted and reinstalled the OS. Took a few hours to get back to my previous setup.

Lesson Learned: Don't use sudo unnecessarily.
Double check the command while executing.
Running a wrong command with root permission can fuckup your entire machine.

Inspite of having a decent pc setup, ubuntu keeps stopping.

My pc specs are as follows :-

RAM - 16 GB DDR4

HDD - 1TB (Windows 10 professional)

SSD - 240 GB(Ubuntu 20.04LTS)

GPU - Nvidia Geforce GTX 1050 ti

CPU - Intel i5-9400F (6) @ 4.100GHz

My daily usage hardly requires 5 gigs of ram. Ubuntu works suddenly hangs and works fine again...after sometime again this thing happens...in discord the same thing happens but more frequently than the normal workstation. When i give my password to login, then also it takes time more than normal to start. Even bootup takes like roughly 40 seconds whereas windows boots within 2-3 seconds. Any help would be appreciated.

McFucky is pile of shit.

Any recommendations for decent 13 inch laptop under 1400$ USD
- Atleast 8 gigs of RAM and option to upgrade
- resolution >= full HD
- storage >= 256 GB SSD
- battery >= 6 hrs heavy chrome usage
- Linux compatibility
- Cpu- nothing heavy - browser and docker containers, no building or compiling

-- Have you ever self hosted a Linux/Free Bsd server at home?
-- What was the maintenance like in terms of operation and cost compared to an online service?

I and my partner are planning to self host our Ubuntu server locally because currently though we spend less than $1100 a month on Azure with moderate CPU usage but we plan to scale out with believes that the server cost might sky-rocket.

We made a budget of $25k for the setup which includes cost of hardware, bandwidth and power.

We also made some research concerning most used hardwares for home servers because we really are newbees talk of hardware. What we found are options related to the Intel Xeon as CPU, some others say use NAS, while some are more of advertising.

$25k on the desk,
we care more about speed than of space. How can we make the setup totally worth it? You don't have to spare us a change, just some headlight and way to go.
Your advice are needed. Thank you.