The amount of processing units of the CPU used to execute a task and how long it takes.
Questions tagged [cpu-usage]
685 questions
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How to interpret values of Perfmon counter Hyper-V Hypervisor Virtual processor\CPU Wait time per dispatch
So there is a lot of guidance on the web that advises tracking the values of the Perfmon counter Hyper-V Hypervisor Virtual processor\CPU Wait time per dispatch as the nearest Hyper-V equivalent of VMWare's CPU ready time.
Unfortunately there does…
James Lupolt
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Growing OS cache in RAM causing high system CPU usage
I'm having a weird issue with a server that I've never seen before. On a machine with ~30G of RAM with an application that takes ~10G (spread across hundreds of processes). Over time the OS starts to fill up the spare RAM with cache and buffers…
mpeters
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How to trace high CPU Apache process to particular virtualhost
Looking at the output of top I notice that intermittently there are one or two Apache processes consuming a high amount of CPU - anywhere between 50% - 90%
The spikes in CPU usage come and go quite quickly every 10 seconds or so.
There are various…
MrCarrot
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WHM/CPANEL - High cpu and memory usage from Analog Stats
A single process is taking 100% of the cpu and 70% of the memory and starts every day on different account;
/usr/local/cpanel/3rdparty/bin/analog +CIMAGEDIR /images/ +CDOMAINSFILE /usr/local/cpanel/3rdparty/share/analog/usdom.tab +CCHARTDIR ./…
Бай Иван
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How to monitor CPU usage on a device running embedded Linux and BusyBox?
I recently began working with a device that uses embedded Linux and BusyBox. It is very stripped down, and does not have iostat or sar. It also doesn't have dpkg or apt for package management. The system is a development black-box under a…
Alan
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How can sleeping processes in "top" be using a percentage of CPU?
When we run top we occasionally see a sleeping, "S", process which is using %CPU; I would expect all sleeping processes to use 0% CPU since they are not active. I would expect only running, "R", processes to be actively consuming %CPU in top. For…
Friedrich 'Fred' Clausen
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mongo and app server cpu
The beginning:
We are using uwsgi and I decided to switch our configuration to use more workers/processes.
Why: We have been seeing a traffic increase lately and in my tests with apache benchmark, the new configuration with more workers and…
tonyl7126
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How to resolve high CPU + excessive stat("/etc/localtime") and clock_gettime(CLOCK_REALTIME) calls
I've been experiencing really high CPU on a ruby on rails app (see stack below) and have been trying to diagnose the possible causes to no avail.
Stack:
ruby 1.9.3
rails 3.2.6
Apache/2.2.21 (Debian)
Phusion Passenger 3.0.11
Whenever I run strace…
Yemster
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100% kernel load on FreeBSD 9
I'm having problems with a FreeBSD 9 server. One of the 8 cores (4 w/ HT) is constantly at 100% kernel load.
top gives me:
CPU: 0.0% user, 0.0% nice, 12.5% system, 0.0% interrupt, 87.5% idle
Notice that 12.5% is exactly 100%/8.
top -S shows me…
user145060
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votes
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Software Interrupts CPU time is high and keeps growing
My system is a Debian 6.0.3 x86_64 box w/kernel 2.6.32-5-openvz-amd64, it hosts a number of OpenVZ containers. I have recently migrated from LXC/newer kernel from backports repo to the stable OpenVZ kernel to resolve network issues but got another…
Alex
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How does a CPU ever go Idle enough to enter deeper C states?
Even if no user process is running, don't the kernel processes keep the CPU active enough so as to prevent it from entering a deeper C state like C1 or C2 ?
kashyapa
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Ubuntu 11.04 server hanging due to landscape-sysinfo CPU overconsumption
I'm running something of a bare-bones server (based on Ubuntu 11.04) on an Amazon EC2 micro instance, whose purpose is simply to coordinate the activities of a few webservers. The machine ran well for a few weeks, but now is hanging frequently with…
Chris Allen Lane
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Load average at 1, even though I've stopped all services!
I have a virtual server running Debian 5 where any action is very slow (like password verification when logging in via SSH or doing su). I checked the load average, which is hovering around 1-2. Then I stopped all services (apache, mysql, postfix,…
Aron
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How is load average related to CPU utilization?
I am facing a load average of > 3 since past 2 days. The CPU utilization is never above 40 % in all cases. Here are some screenshots of Server Density monitoring tool that I use.
The process snapshot at the highest peak, @ 0:00 is as follows:
And…
theTuxRacer
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What should I look for when monitoring an Amazon EC2 Micro Instance's CPU usage?
I'm using Monit to keep an eye on my Amazon EC2 Micro instances, but I'm a little confused about the Load Average CPU metrics because of the Micro instances' ability to use up to 2ECU for short times. Monit is often reporting a Load Average (1 min)…
Jake
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