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Questions tagged [cpu-usage]

The amount of processing units of the CPU used to execute a task and how long it takes.

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AWS-EC2 100% CPU Utilization

I am curious to know about 2 things below about the AWS-EC2 CPU utilization and CPU Credits. What will happen if my AWS-EC2 instance CPU utilization is constantly 100% and I ran out of CPU credits? Assume that my EC2 burstable (t-series) instance is…
Surya H
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Uneven cpu utilization linux dual socket server

Recently I noticed on two of our servers strange distribution of tasks. Both servers are dual cpu EPYC 7402 physically the same platforms, running the same tasks, differ in numa configuration, kernel and ubuntu. Server 1 configuration and…
Mardaker
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How to deal with ksoftirq hitting 100%?

I have a Linux server with 48 CPU and, from time to time, some of them starts hitting almost 100% of usage. And when that happens, the usage doesn't go down and that's affecting some services performance. When I reboot this server, everything goes…
Paulo
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How to perform postmoterm analysis of high usage of CPU/RAM and nonresponsiveness on Ubuntu?

Recently one of my dev server experienced very high usage of CPU (1 out of 2 cores completely used) and RAM(near 100%), and system didn't respond to either SSH, web requests(by apache), nor websocket(by apache and Rachet). From vendor's dashboard I…
Zhiyong Li
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AWS EC2 CPU Spike for 1 minute

Im running a aws linux 2 EC2 instance and noticed throughout the month there will be sudden spikes in the CPU usage where it gets close to 90% and then drops off. However looking at the average over 2 week periods the average is usually less than…
Yeak
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400% difference in CPU usage between "Task Manager" and "Sysinternal's Process Explorer"

On one specific server I have 400% difference in CPU usage between "Task Manager" and "Sysinternal's Process Explorer" (both picture taken on the same screenshot, so at the exact same time). What can be the cause of this discrepancy?   edit: Process…
Gregory MOUSSAT
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MySQL + php due to high CPU usage app crashing

Just recently the application that I maintain started crashing, mysql's CPU usage is 100%... or more :) The application itself is quite old and has a lot of slow queries but before blaming it I want to check if it's not the mysql issue. I hate to…
Maarduk
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Best Fit for Image processing (AWS, GCP, Azure etc.)

I have an application which uploads images (png and jpeg) of at least 3 MB in size to the server and the server processes the images by creating 3 resized thumbnails of type webp. The problem is the processing duration as well as resource…
Andrey Yaroshenko
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Should I use cpu utilization or system load?

I use ffmpeg to transcode H265 video to H264 stream. The computer seems over capacity while pulling video from two cameras. The machine is equipped with a 8-core i7-7700T. My question is, shall I use CPU utilization (460.7%, 331.7%) or load…
xrfang
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How to estimate how much resources are needed in a cluster?

I'm new to kubernetes. So I need some help with things, which are basic stuff for most of you. I build my first cluster and added some workers (bare metal). How do I estimate how much resources/power I need for my apps? For example I'm using 10…
user3142695
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Unknown process on Centos 7 VPS "sysnetd" using lots of cpu

So I cant seem to find any information ANYWHERE on what this process, "sysnetd", does. I've run LSOF etc but nothing seems to provide any info I know what to do with. The /proc/pid folder also doesnt seem to provide any details (that I know what to…
user1449369
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100% CPU usage from iowait caused by Nginx, not solved by turning sendfile on and directio off

I run a webservice that performs some basic image processing operations. The webserver first accepts image uploads from users and temporarily stores them. A backend server then downloads the image through a HTTP get request and performs the actual…
ackbar03
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Uneven CPU usage with NGINX

On my CentOS 7 server, the load on each core is unequally distributed, as seen in the screenshot: some nginx worker seem to take way more load than other. irqbalanceis enabled, hyperthreading disabled. Any idea why ?
NicoAdrian
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How to identify cause of sudden CPU utilization

I have a production server for a web application configured in AWS EC2 instance. I was running this for years and suddenly since today morning it is showing some spikes in CPU usage and application was down for few time today. When I run atop…
Prasad Rajapaksha
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Downtime on an EC2 instance

Recently I had an issue on an EC2 instance. The site running there was unavailable for 2 hours: CPU utilization for the past week: The rest are around the time it happened: The systemd journal around that period. What I can see there? At around…
x-yuri
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