General Dev>In The News

The Problem with CPUs and Kubernetes

CommunityNews

CommunityNews

The Problem with CPUs and Kubernetes

Key Takeaway:

os .cpus() returns the number of cores on a Kubernetes host, not the number of cores assigned to a pod.

Investigating excessive memory usage

Recently, when I was looking through a cluster health dashboard for a Kubernetes cluster, I noticed that one of the applications deployed was using a considerable amount of RAM - way more than I thought could be reasonable. Each instance (pod) of the application used approximately 8 GB of RAM, which was definitely excessive for a reasonably simple NodeJS webserver. Combined with the application running 20-30 replicas or so, it makes the total RAM usage between 160 GB and 240 GB.

Read in full here:

This thread was posted by one of our members via one of our news source trackers.

1 comment
#kubernetes
4 882 1

Most Liked

OvermindDL1

OvermindDL1

Yeah the way CPU allocation works is it a relative CPU amounts, there’s both a minimum given (could access more if unused), as well as a max, but as this can change as the hardware is hotswapped among other things it can’t just overwrite what the cpu core count shown is as it can potentially change. Should always give the allowed thread count passed into the program, don’t try to calculate it based on something.

2
Post #3

Where Next?

View thread on forum
kubernetes
Home General Dev>In The News
#kubernetes
4 882 1
Last post

Popular General Dev topics Top

Exadra37
General Dev>In The News

Call an Exorcist! My Robot’s Possessed! | McAfee Blogs
As part of our continued goal of helping developers provide safer products for businesses and consumers, we here at McAfee Advanced Threa...
mcafee.com
/security#api#tech-news-source
3 1391 1
New
First poster: dwaynebradley
General Dev>In The News

The faster you unlearn OOP, the better for you and your software
Maybe it’s just my experience, but Object-Oriented Programming seems like a default, most common paradigm of software engineering. The on...
dpc.pw
#oop
36 2043 15
New
First poster: dyowee
General Dev>In The News

There’s No Such Thing as Clean Code
Everyone seems to be striving for ‘clean’ code at the moment. You can’t read a blog post without the author telling you how clean their a...
steveonstuff.com
#code
31 1498 9
New
First poster: Korbin73
General Dev>In The News

Whatever happened to Elm, anyway?
Whatever happened to Elm, anyway?. I see this question pop up quite frequently in lots of different arenas - folks are curious as to wha...
derw.substack.com
/elm
17 1142 12
New
First poster: jkdiaz
General Dev>In The News

Dark mode is not as good for your eyes as you believe (2019)
Dark mode isn’t as good for your eyes as you believe. The shadowy display mode has leagues of fans claiming it helps reduce eye strain, ...
wired.com
3 1296 2
New
CommunityNews
General Dev>In The News

SLUM: The Shadow Library Uptime Monitor
SLUM: The Shadow Library Uptime Monitor. This dashboard tracks the availability of popular shadow libraries in real time from a US-based...
open-slum.org
#library#monitor
0 2036 0
New
CommunityNews
General Dev>In The News

Self-Hosting a Firefox Sync Server
After switching from Firefox to LibreWolf, I became interested in the idea of self-hosting my own Firefox Sync server. Although I had see...
blog.diego.dev
#hosting#firefox
0 615 0
New
First poster: joeb
General Dev>In The News

JavaScript Fatigue Strikes Back
The new frameworks will continue until morale improves.
allenpike.com
/js
6 480 5
New
CommunityNews
General Dev>In The News

Phlex for Rails Emails: Action Mailer without ERB
Rendering Action Mailer emails with Phlex components and layouts: Clean, Composable, and Completely Ruby - Blog post by Camillo Visini
camillovisini.com
/rails#emails
0 375 0
New
CommunityNews
General Dev>In The News

The Meter, Golden Ratio, Pyramids, and Cubits, Oh My
The French originated the meter in the 1790s as one/ten-millionth of the distance from the equator to the north pole along a meridian thr...
iforgeiron.com
0 207 0
New

Other popular topics Top

Devtalk
General Dev>Dev Chat

HELLO WORLD (Introductions thread!)
Hello Devtalk World! Please let us know a little about who you are and where you’re from :nerd_face:
#community
477 6002 112
New
siddhant3030
General Dev>Dev Chat

Which vertical monitor do you use?
I’m thinking of buying a monitor that I can rotate to use as a vertical monitor? Also, I want to know if someone is using it for program...
#monitors#programming
51 4622 20
New
AstonJ
General Dev>Hardware

Seen any cool new keyboards?
We have a thread about the keyboards we have, but what about nice keyboards we come across that we want? If you have seen any that look n...
/keyboards#mechanical-keyboards
49 5587 39
New
AstonJ
General Dev>Hardware

Custom keyboard keycaps
There’s a whole world of custom keycaps out there that I didn’t know existed! Check out all of our Keycaps threads here: https://forum....
#hardware/keyboards#keycaps#mechanical-keyboards
15 9736 19
New
AstonJ
General Dev>Code Editors

Onivim 2 Code Editor
Thanks to @foxtrottwist’s and @Tomas’s posts in this thread: Poll: Which code editor do you use? I bought Onivim! :nerd_face: https://on...
#code-editors/onivim/revery
88 5821 32
New
AstonJ
Science/Tech>Health & Diet

Did you manage to avoid covid19?
Seems like a lot of people caught it - just wondered whether any of you did? As far as I know I didn’t, but it wouldn’t surprise me if I...
#covid19
190 4114 79
New
gagan7995
Backend>Questions

Please tell me how to write a query for this in nodejs
API 4 Path: /user/following/ Method: GET Description: Returns the list of all names of people whom the user follows Response [ { ...
/nodejs
7 3258 3
New
Maartz
General Dev>Dev Chat

Roc Language - a new purely functional programming language built for speed and ergonomics
Hi folks, I don’t know if I saw this here but, here’s a new programming language, called Roc Reminds me a bit of Elm and thus Haskell. ...
#programminguages#functional-programming
49 4745 14
New
AstonJ
AI>Chat

How to: Run DeepSeek on Mac, Windows, and Linux!
This is a very quick guide, you just need to: Download LM Studio: https://lmstudio.ai/ Click on search Type DeepSeek, then select the o...
#macs/deepseek#guides#lm-studio
14 7706 10
New
AstonJ
AI>Chat

Post your DeepSeek results
Curious what kind of results others are getting, I think actually prefer the 7B model to the 32B model, not only is it faster but the qua...
/deepseek
15 2909 15
New
Back to top

Sponsor Spotlight

WyewWorks

Enabling companies to succeed by building software people love.

General Dev>In The News

General Dev In The News ❯

Latest on Devtalk

Devtalk ❯

We ❤️ helpful members!

We reward our most helpful members via our MOTM scheme - by giving away a whopping 25 books per year!

Member of the Month

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

Honeybadger

Real-time error tracking, performance insights, and observability for devs.

Manning Publications

Develop your skills with books, videos, and courses.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

Categories:

Sub Categories:

Popular Portals

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

Honeybadger

Real-time error tracking, performance insights, and observability for devs.

Manning Publications

Develop your skills with books, videos, and courses.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

We're in Beta

About us Mission Statement See our Roadmap