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The company i work for has a jenkins server (for people that don't know jenkins, it's an automated build service that gets the latest git updates, pulls them and then builds, tests and deploys it)
Because it builds the software, people were scared to update it so we were running version 1.x for a long time, even when an exploit was found... Ooh boy did they learn from that...
The jenkins server had a hidden crypto miner running for about 5 days...
I don't know why we don't have detectors for that stuff... (like cpu load being high for 15 minutes)
I even tried to strengthen our security... You know basic stuff LIKE NOT SAVING PASSWORDS TO A GOOGLE SPREADSHEET! 😠
But they shoved it asside because they didn't have time... I tried multiple times but in the end i just gave up...13
Most satisfying bug I've fixed?
Fixed a n+1 issue with a web service retrieving price information. I initially wrote the service, but it was taken over by a couple of 'world class' monday-morning-quarterbacks.
The "Worst code I've ever seen" ... "I can't believe this crap compiles" types that never met anyone else's code that was any good.
After a few months (yes months) and heavy refactoring, the service still returned price information for a product. Pass the service a list of product numbers, service returns the price, availability, etc, that was it.
After a very proud and boisterous deployment, over the next couple of days the service seemed to get slower and slower. DBAs started to complain that the service was causing unusually high wait times, locks, and CPU spikes causing problems for other applications. The usual finger pointing began which ended up with "If PaperTrail had written the service 'correctly' the first time, we wouldn't be in this mess."
Only mattered that I initially wrote the service and no one seemed to care about the two geniuses that took months changing the code.
The dev manager was able to justify a complete re-write of the service using 'proper development methodologies' including budgeting devs, DBAs, server resources, etc..etc. with a projected year+ completion date.
My 'BS Meter' goes off, so I open up the code, maybe 5 minutes...tada...found it. The corresponding stored procedure accepts a list of product numbers and a price type (1=Retail, 2=Dealer, and so on). If you pass 0, the stored procedure returns all the prices.
Code basically looked like this..
public List<Prices> GetPrices(List<Product> products, int priceTypeId)
foreach (var item in products)
List<int> productIdsParameter = new List<int>();
List<Price> prices = dataProvider.GetPrices(productIdsParameter, 0);
foreach (var price in prices)
if (price.PriceTypeID == priceTypeId)
prices = dataProvider.GetPrices(productIdsParameter, price.PriceTypeID);
* Omitting the other 'WTF?' code to handle the zero price type
I removed the double stored procedure call, updated the method signature to only accept the list of product numbers (which it was before the 'major refactor'), deployed the service to dev (the issue was reproducible in our dev environment) and had the DBA monitor.
The two devs and the manager are grumbling and mocking the changes (they never looked, they assumed I wrote some threading monstrosity) then the DBA walks up..
DBA: "We're good. You hit the database pretty hard and the CPU never moved. Execution plans, locks, all good to go."
<dba starts to walk away>
DevMgr: "No fucking way! Putting that code in a thread wouldn't have fix it"
Me: "Um, I didn't use threads"
Dev1: "You had to. There was no way you made that code run faster without threads"
Dev2: "It runs fine in dev, but there is no way that level of threading will work in production with thousands of requests. I've got unit tests that prove our design is perfect."
Me: "I looked at what the code was doing and removed what it shouldn't be doing. That's it."
DBA: "If the database is happy with the changes, I'm happy. Good job. Get that service deployed tomorrow and lets move on"
Me: "You'll remove the recommendation for a complete re-write of the service?"
DevMgr: "Hell no! The re-write moves forward. This, whatever you did, changes nothing."
DBA: "Hell yes it does!! I've got too much on my plate already to play babysitter with you assholes. I'm done and no one on my team will waste any more time on this. Am I clear?"
Seeing the dev manager face turn red and the other two devs look completely dumbfounded was the most satisfying bug I've fixed.5
Have been trying to setup Netdata as a monitoring system for a while now and finally got it working!
Instead of the built-in webhooks I just did a curl to a url containing a php page/file which error logs the status and description (just for testing).
It took me way too long to get it to work but BAM.
Immediately made a new cpu load rule (one minute high load):
The satisfaction of getting an error message in the php logs containing my custom rule as warning and a minute later as critical 😍
You know it's hot as fuck when your CPU overheats and your PC gives a constant bleeping noise even though you set the warning limit to 80°C.
I had to put a ventilator next to the damn thing to be able to code in peace without this nerve-racking high pitched noise.
This isn't as much of a rant as the story of my worst abuse of computer knowledge.
This happened a couple years ago. When I was in high school, I had this friend/enemy relationship with this guy, lets call him Thomas. He loved to pull pranks on people. He had a similar firend/enemy relationship with my brother, and after one prank, my brother decided to get revenge. And by revenge, he meant asking me to make a virus.
I knew the guy, and I agreed. We thought about what type of virus we could make that would be funny, and not too damaging. We decided on a program that would play annoying sound effects every few minutes. Short enough to be noticable, long enough that Thomas would give up and not try to investigate.
I won't bore you with the details of the program. It was a very simple C app, very small, named "Counter-Strike-Global-Offence-Free-Download-Totally-Legit.exe". It was clearly visible in task manager, but since it was so small and barely used CPU or RAM it would stay near the bottom. I tried loading a custom sound effect, but it turned out the windows default "invalid sound effect" was much more annoying than any custom sound I could find.
The "Infecting" portion consisted of moving the .exe to the start menu startup folder while Thomas left his laptop unattended. My brother handled this part.
I unfortunaly left the country soon after and never actually saw the effect the program had on Thomas. I assumed my brothers laughing would give it away rather fast and he could simply remove it from his startup folder. However, my brother told me he still complained about it for months, before finally bringing the laptop to a repair center that found the totally legit CS:GO exe. My brother ended up telling him soon after, but this was still the best prank I ever pulled.
Why am I such an average ?
It's just a sad realisation. Nobody cares but I wanna send this out there, just to write thoughts.. I am 18 in 3rd year of high school (grammar school so nothing IT related, basically waste of time) and in IT I'm all self taught but I feel like I could be better if I just didn't [something]..
I feel like I wanna learn so many things but when I look at you, it seems like a common problem in the IT sphere so hey, average guy joining the club.
I also feel dumb when programming. I didn't manage to learn C++ in it's entirety because to really accomplish something, you've got so many ways to do it and finding the best one requires deep understanding of the tools you've got at your disposal with the language and I feel like I'm not capable of this(self learn, in school/Uni that's different story).. But many (most) of you are. I've tried many coding challenges and when I got it working, I just saw how someone did it in one line just by layering functions that I've never heard of..
Also, we've got kinda specific national competition here in many fields including IT for high schools.. And the winners always do sometimes like "AI driven Life simulation" or "Self flying drone made from ATMega from scratch with 3D simulation in C# to it" or "Game engine" or whatever shit and it's always from grammar schools and never IT related schools.. They are like me. Maybe someone helped them, I don't know, but they are just so far away from me while I'm here struggling to get the basic level of math for any kind of machine learning..
Yeah I've written Neural Network from scratch in C but meh, honestly it's pretty basic stuff .. I'd rather understand derivatives which we're going to learn next year and I'm too lazy to learn it from khan academy because I always learn something else.. Like processing (actually codetrain started teaching tensorflow so that might be the light for me...) Or VHDL (guys you can create your own chip / CPU from scratch and it's not even hard and OMFG it's so fucking cool , full adder done yay) or RPi or commodore 64 assembly or game development with Godot and just meh..
I mean, this sounds exactly like not knowing what to do and doing nothing in the end. That was me like 6-12 months ago. Now I'm managing to pick 2-3 things and focus them and actually feel the progress.
But I lost track of the original point.. I didn't do anything special, every time I'm programming something, everyone does it better and I feel dumb. I will probably never do anything special, everyone around says "He's still learning he's genius" but they have no idea.
I mean, have you seen one of the newest videos on Google's YouTube channel (I openly hate them, but I will keep that away for now), something like "Sarah story" ? It's about girl that apparently didn't care about IT but self learned tensorflow on high school. I think it may be bullshit (like ALL of their videos ) but it's probably just fancied, not complete lie.
And again, here I am. I now C but I'm incapable of learning to program good which most of you did and are now doing for living. I'm incapable to do anything cool, just understanding what everybody else did and replicating it. I'm incapable of being clever.
Sorry, just misusing devrant to vent a bit17
guys maybe its sounds funny but im student at high school 1st class and dont have too much money and i need some good notebook for school about 300-400€ will be happy for any idea thanks
(not intel HD graphics) not integrated and at least 2.00Ghz CPU and 4Gb RAM minimum16
Ok seriously is Microsoft mining Bitcoin on my computer? If I leave it idle for >5 minutes it starts using intense amounts of CPU and I have no clue why (doesn't show up in task manager, all the processes added up in taskmgr are like 15% max). It's super annoying since I have a razer and high cpu turns on BOTH VERY LOUD FANS.
I checked for malware and stopped any update or useless background tasks (cortana, indexing, etc) and it has not helped one bit. If I click the screen or move the mouse it subsides immediately.
(No, I won't get a mac--I have two and they lacks compatibility with the software I need as well as the specs for what I usually work with)15
This is a guide for technology noobies who wants to buy a laptop but have no idea what the SPECS are meaning.
If you like Apple, and love their !sleek design, go to the nearest Apple store and tell them "I want to buy one. Recommendations?"
If you don't like Apple, well, buy anything that fits you. Read more below.
There are 11~15 inches, weight is 850g ~ 2+kg. Very many options. Buy whatever you like.
//Fun part coming
This is the power of the brain.
Pentium is Elementary Schoolers
i3 is Middle Schoolers
i5 is High Schoolers
i7 is University People
Dual-core is 2 people
Quad-core is 4 people
Quiz! What is i5 Dual-core?
A) 2 High Schoolers.
Easy peasy, right?
Now if you have a smartphone and ONLY use Messaging, Phone, and Whatsapp (lol), you can buy Pentium laptops.
If not, I recommend at least i3
Also, there are numbers behind those CPU, like i3-6100
6 means 6th generaton.
If the numbers are bigger, it is the most recent generation.
Think of 6xxx as Stone age people
7xxx as Bronze age people
8xxx as Iron age people
and so one.
This is the size of the desk.
There are 4GB, 8GB, 16GB, 32GB, and so one.
Think of 4GB as small desk to only put one book on it.
8GB as a desk to put a laptop with a keyboard and a mouse.
16GB as a normal sized desk to put some books, laptop, and food.
32GB as a boss sized desk.
And so one.
When you do multitasking, and the desk is too small...
You don't feel comfortable right?
It is good when there are spacious space.
Same with RAM.
But when the desk becomes larger, it gets expensive, so buy the one with the affordable price.
If you watch some YouTube videos in Chrome and do some document words with Office, buy at least 8GB. 16GB is recommended.
You take out the stuffs such as books and laptop from the basket (HDD/SSD), and put in your desk (RAM).
There are two kinds of baskets.
The super big ones, but because it is so big, it is bulky and hard to get stuffs out of the basket. But it is cheap. (HDD)
There are a bit smaller ones but expensive compared to the HDD, it is called SSD. This basket is right next to you, and it is super easy to get stuffs out of this basket. The opening time is faster as well.
SSDs were expensive, but as times go, it gets bigger as well, and cheaper. So most laptops are SSD these days.
There are 128GB, 256GB, 512GB, and 1024GB(=1TB), and so one. You can buy what you want. Recommend 256GB for normal use.
Game guy? At least 512GB.
It is the eyesight.
Most computers doesn't have dedicated graphics card, it comes with the CPU. Intel CPUs has CPU + graphics, but the graphics powered by Intel isn't that good.
But NVIDIA graphics cards are great. Recommended for gamers. But it is a bit more expensive.
Buying a laptop is
- Pick the person and the person's clothes (brand and design)
- Pick the space for the person to stay (RAM, SSD/HDD)
- Pick how smart they are (CPU)
- Pick how many (Core)
- Pick the generation (6xxx, 7xxx ....)
- Pick their eyesight (graphics)
And that's pretty much it.
Super easy to buy a laptop right?
If you have suggestions or questions, make sure to leave a comment, upvote this rant, and share to your friends!3
It was the last year of high school.
We had to submit our final CS homework, so it gets reviewed by someone from the ministry of education and grade it. (think of it as GPA or whatever that is in your country).
Now being me, I really didn’t do much during the whole year, All I did was learning more about C#, more about SQL, and learn from the OGs like thenewboston, derek banas, and of course kudvenkat. (Plus more)
The homework was a C# webform website of whatever theme you like (mostly a web store) that uses MS Access as DB and a C# web service in SOAP. (Don’t ask.)
Months have passed, and only had 2 days left to deadline, with nothing on my hand but website sketches, sample projects for ideas, and table schematics.
I went ahead and started to work on it, for 48 hours STRAIGHT.
No breaks, barely ate, family visited and I barely noticed, I was just disconnected from reality.
48 hours passed and finished the project, I was quite satisfied with my it, I followed the right standards from encrypting passwords to verifying emails to implementing SQL queries without the risk of SQL injection, while everyone else followed foot as the teacher taught with plain text passwords and… do I need to continue? You know what I mean here.
Anyway, I went ahead and was like, Ok, lets do one last test run, And proceeded into deleting an Item from my webstore (it was something similar to shopify).
I refreshed. Nothing. Blank page. Just nothing. Nothing is working, at all.
Went ahead to debug almost everywhere, nothing, I’ve gone mad, like REALLY mad and almost lose it, then an hour later of failed debugging attempts I decided to rewrite the whole project from scratch from rebuilding the db, to rewriting the client/backend code and ui, and whatever works just go with it.
Then I noticed a loop block that was going infinite.
NEVER WAIT FOR A DATABASE TO HAVE MINIMUM NUMBER OF ROWS, ALWAYS ASSUME THAT IT HAS NO VALUES. (and if your CPU is 100%, its an infinite loop, a hard lesson learned)
The issue was that I requested 4 or more items from a table, and if it was less it would just loop.
So I went ahead, fixed that and went to sleep.
The day has come, the guy from the ministry came in and started reviewing each one of the students homeworks, and of course, some of the projects crashed last minute and straight up stopped working, it's like watching people burning alive.
My turn was up, he came and sat next to me and was like:
Him: Alright make me an account with an email of email@example.com with a password 123456
Me: … that won't work, got a real email?
Him: What do you mean?
Me: I implemented an email verification system.
Him: … ok … just show me the website.
Me: Alright as you can see here first of all I used mailgun service on a .tk domain in order to send verification emails you know like every single website does, encrypted passwords etc… As you can see this website allows you to sign up as a customer or as a merc…
Him: Good job.
He stood up and moved on.
I WENT THROUGH HELL IN THE PAST 48 HOURS.
AND YOU JUST SAT THERE FOR A MINUTE AND GAVE UP ON REVIEWING MY ENTIRE MASTERPIECE? GO SWIM IN A POOL FULL OF BURNING OIL YOU COUNTLESS PIECE OF SHIT
I got 100/100 in the end, and I kinda feel like shit for going thought all that trouble for just one minute of project review, but hey at least it helped me practice common standards.2
Hey fellow devRanters,
I'm sure some of you have read about the newest vulnerabilities in Intels Management Engine (ME). I feel like ME and similar "features" are unacceptable backdoors into our systems. Unfortunately Intel and AMD do not offer their customers the option to acquire CPUs that lack these backdoors and make disabling them rather impossible 😒
Thus my question: Do you guys know of any 64-bit "open-source" CPU on the market that is production-ready and suitable for high-traffic web applications? Please note that I don't consider FPGAs to be viable options, since I don't trust Xilinx and Altera either.15
Somebody ranted about his teacher showing windows presentation and teaching nothing. I wanted to comment that post but i have enough material to make the whole rant out of it.
Well at least you have those presentations! In my school we have 2 IT classrooms one with win xp, 1ghz cpu, 0,5gb ram computers and one with win vista, 2 core 2ghz cpu and 2gb of ram PCs.
Guess what room our teacher is using... of course the worse one! The second one is fine, few years ago another theacher had been using it!
I tried to convince him to change rooms but he is coming up with silly exciuses! (like "server is not working here!", well i fixed it with my friend but why are you even talking about it when you are not using yours in old class!)
PS. That server is useless anyway, every pc is connected to router that is connected to internet so supervisor pc is not mandatory, only acces restriction is enforced by win accounts.
I heard from students from my class (that picked that optional IT course) (i'm in high school) that gimp is not working because pc's are so bad!
Sometimes even notepad frezzes.🤔
Not only class is shite but teacher clearly has no idea what is he doing. (in order to pass the final from IT you need to learn simple C++, up to simple foo objects) and of course he isn not even talking about that! On one lesson about sorting algorithms he gave everybody 10 small pieces of paper with numbers on them and told everybody to sort them manualy, because he didnt know how to do it himself! So there is no doubt they wont be able code it.
I need to mention that i volontered to "clean, fix" that classroom (in order to convince teacher to move). And in that class i saw programms written in c++ on every computer! That means somebody was teaching propely before! 😣
I feel sorry for those guys, they are just waisting time. I would fall for it as well but i decided i can learn coding in home ;).
Well, results are shocking, after 1 month of coding i learned C# and i can basicly make any algorithm i ever wish. I learned about computer operation so well that i can nearly teach computer science. (i helped my friend in usa that is a electronic student with that and i'm very proud of it 😁) and it class still can't even use all 3 loops correctly... 😥 Ok i must admit i have been coding for a looooong while so i had time to learn basic c,c++ and pc operations before, but point still stands.
Why the hell are you wasting life of those studends? Why are you giving them a choice to learn coding WHEN YOU CANT EVEN USE PC YOURSELF?! (that it course is optional so you can apply if you want so)
I dont regret not bothering about it.1
They dont mention it in any reviews but dell has cooling problems. Yesterday I bought a brand new g5 from a shop and fans were not spinning until 80c from which it started spinning at 4900rpm like a vacuum. Note that I have latest bios so its not temperature table problem in bios.
I found out that there is a driver for thermal power which you can install and for most people it does the work (runs 2200 rpm silent cooling for most of time and 4900 rpm when cpu gpu temp goes above around 60c which is annoying)
So I had to spend entire day on figuring out how to control cooling fans myself. And even then dell limited available speeds in bios at 0, 2200 and 4900 rpm.
Anyways now my cooling fans run at 2200 rpm until 70c and 4900 after. So i get some nice silent performance for 90% of what I do and as for gaming, full fans after 75c is fine. I ran DOOM from steam and max temps Ive got were around 85-90c which is pretty high, so Im thinking of doing a repaste event though im afraid of voiding the warranty.5
What the actual motherfucking fuck? What have I done so bad in my previous life to get this shit? Did I slay little cute puppies?
So I got a call from the client and he argued about how slow the system runs or that it happens that the copy commands fails.
It sounded interessting and I didn't know in what kind of rabbithole I'm going through.
The system is always in the year 2012 (don't ask why, it's just hardcoded ... another rant story).
Some of you maybe know that bug because it was very popular.
Wayne train, let's continue -> I saw that the copy command fails sometimes and that the system has a high CPU usage and futex lockups. Pretty strange and doesn't seem obivous why that is.
Sadly there are no logs in the system (not implemented and again ... another.fucking.rant.story.)
The system is kinda old and to patch it would mean to port shitty written programs and I don't have the time for that..
After searching and testing for weeks I finally found the fucking fuckidi fucked up problem.
A WRONG IMPLEMENTATION OF THE MOTCHERFUCKING LEAPSECOND CAUSED THIS SHITTY SHIT. A.FUCKING.LEAPSECOND. In all this time I questioned my OWN FUCKING SANITY! NOT EVERY FUCKING MINUTE HAS 60 SECONDS. THERE ARE SOME WITH 61!!
I'm just mad af. It's such a release to find the solution but it's so fucked up you just wanna jump of a bridge
Here if you are interested about this bullshit: https://bugs.launchpad.net/ubuntu/...
Question / Suggestions.
CPU : AMD or Intel ?
GPU : AMD or Nvidia ?
I want to build a High-end PC (Desktop).19
So I put my dual boot back yesterday, added windows to a second partition.
Its been one day.
Windows has already broken on me. Also my CPU is capped at an incorrect frequency and the cpu turbo I found has been disabled.
Its been one day. ONE DAY with Windows and it has already shit out on me. Also these boot times are complete garbage, and what the fuck is this 'needs to restart to update' garbage. What once was 120fps off integrated graphics for gamin on high is now 50 on low. AND WHY IS MY RAM AND CPU SO FLOODED!?!? Seriously I've never seen my cpu go over 20% and ram go over 4GB (25%), but Windows needs that much running idle? And why is this OS so goddamn slow, if I click start, why do I have to wait for the start menu? Linux I just start typing and it works! Also, why are all the settings and features blocked? I cant do basic modifications to the OS? Where is the option to have my scripts? I don't wanna have to actually use my computer to use it, and Linux provides that functionality with scripts.
ITS AN I7 WITH 16GB RAM AND A TB OF STORAGE WHY DOES WINDOWS STRUGGLE TO RUN!
last but not least, the struggle I had to go through to actually add windows? You need windows software to create a bootable windows USB and prerequisites include the computer is already setup for Windows. How about Linux? Well, Linux like doesn't even care if it's even being plugged into a computer, you can pretty much shove a Linux USB up your ass and it'll still install.3
Whoops, my head will be squashed tomorrow. Asked to put monitoring in other week by boss, sysadmin been complaining about high CPU, apparently 10 requests (different domains) to the one VM on our servers every 10 seconds is killing it. However this server is being used for MySQL and serving web requests by Apache and PHP. Then also running a few jobs like consuming queues etc.
Wtf do I do? Every time I tell him about more resources (we have decent 2 rack servers just running 20 vms and only 1 VM is for web sites) he says software should be made to work with what we have.1
I need a powerhouse laptop: top CPU, loads of RAM and a decent GPU to run games occasionally (doesn't have to be ultra high graphics). Any brand recommendations? I love building computers, but buying laptops is really overwhelming.17
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 ):D2
When you have high performance set, yet your lame CPU won't get above 0.75Ghz, so you have to constantly reboot to hit the 3.50Ghz jackpot1
spent a few days trying to track down the cause of a thermal shutdown in my workstation. intel 4790k with no overclock would spike to 95C on one core (core1) whenever maxing out all 8 threads, be it real work, mprime, anything with 100% cpu being used. I quadrupled my RAM from 8gb to 32, because its cheap and id like to have all data in memory sometimes, not because I thought that was the problem. I reseated my watercooling block. I checked out the PSU. I unplugged all unnecessary peripherals, drives, etc. It turned out to be a bug in Gigabyte MOBO BIOS (causing temps to be read incorrectly i think, still not exactly sure...) updated from version 5 to 10 and poof now temps are back in the high 50's at full load. it only took 2 days to figure out and i think i learned something
Please tell me there's an alternative to speedfan than lets me set up a custom curve for fan speeds. At the minute it's either constant server level noise. Or adjusting speeds manually every time i want to do something that requires high CPU load and putting them back to acceptable idle noise levels afterwards