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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.

685 questions
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CPU load too high. How to investigate?

This is my "top" screen. Now it's 2.96. Sometimes it goes above 3! I've read that it's not good. How to investigate and fix it?
emeraldhieu
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Can I restrict how many CPUs SQL Server 2005 uses?

I have a SQL Server 2005 instance running on a production server. CPU load is relatively low in part thanks to some recent improvements in the code. I'm trying to work out if I could safely reduce the number of CPUs in the machine and would like to…
Robin
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How to combine different pidstat outputs (CPU, I/O, Disk Usage)

I would like to use pidstat to get both -u, -r and -d flags. Is there a way to do so? The idea, is to get both CPU, I/O and disk usage. Cheers Ps. Combining the flags as -urd doesn't work in Ubuntu 11.04
Emanuele
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Can an ESX server under heavy load cause cpu spikes on guest VM's?

So we have a number of vm's running on an ESX 4.1 server for product testing. The ESX Server is at times under heavy load. We've been experiencing high CPU levels during some use cases, but we can't always duplicate this. If the ESX server as a…
UnknownUnknowns
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Getting CPU steal times on Ubuntu 11.4 Virtual Box

I'm trying to check on CPU steal times in a virtual machine. The goal is for me to be able to detect if my app is running in a VM on over-committed hardware. I'm currently just testing, in preparation for later production. I was trying to test this…
ThoughtfulHacking
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Ok to disable DNS Client Service on Windows 2008 Web Server due to high CPU usage?

Occasionally on one of my web servers svchost.exe runs around 60-80% running the DNS Client Service. This is on a Windows 2008 Web Server machine (patched up all the way) handling around 10M page views a day and around 5M unique users monthly. I…
enlightenedOne
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Java eats %100 cpu up

I got this CentOS server in which a Java WebApp (Tomcat6+Hibernate+MySQL+Struts2) is being run. Usually cpu usage is about 10% but sometimes all of a sudden it goes to 100% and the application freezes. The process causing this condition is the java…
SJ.Jafari
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Truecrypt - disk stops reading/writing with regular intervals (Ubuntu)

I am running Ubuntu Lucid with a raid0 setup Intel Xeon X3440 - 4x (2x 2.9GHz) 16GB RAM I got a 1.9TB truecrypt7.0 file container with AES located in my /home (where raid is). When testing network performance in different ways, like wget, it seems…
connery
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Passenger - "Auto-kill" rogue processes?

I'm running a Ruby on Rails application with Passenger + Apache. There's also a perl mailing list server (Sympa) running with mod_perl. I have root and sh access to the server (an Ubuntu machine). Most of the times it runs just fine; the server has…
egarcia
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Dual Quad Core Xeon CPU but still high load

I have a dedicated server with following specs: Two Intel Xeon-Harpertown 5430-Quadcore[2.66 Ghz] 4GB DDRII RAM 500GB SATAII HD CentOS 5.5 64-bit Problem is that even with such specs MySQL still takes high CPU usage. It almost remain above 150%…
Ali
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windows server 2008 100% CPU

I am on Service Pack 2. My CPU is running at 100% with either svchost.exe or services.exe. I know that this was common in XP, server 2000, etc. But now I only seem to find posts for Vista. What is the reason?
user49352
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limit cpu ocupation for script

How can I limit a cpu usage to my backup script. It does a mysql db dump and backup of my www directory then bzip2 everything, but it takes a bit and during this time a cpu has 100% load. Can I somehow limit a cpu to i.e. 25@ at most, it will take a…
michael
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taskmgr.exe 100% CPU Usage

I have 2 IBM servers Intel Xeon Dual core with > 2gb RAM. the problem is that Taskmanager uses one full core when i open it. The same happens when i copy files in the explorer. (source: bghupdate.com.ar) Threads in procexplorer…
Burnsys
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Caching DNS server (bind9.2) CPU usage is so so so high

I have a caching-only dns server which get ~3k queries per second. Here is specs: Xeon dual-core 2,8GHz 4GB of RAM Centos 5x (kernel 2.6.18-164.15.1.el5PAE) bind 9.4.2 rndc status: recursive clients: 666/4900/5000 About 300 new queries (not in…
Gk.
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Load average greater than number of CPUs

Why load average is greater than number of cores CPUs? But, htop command is not showing which process are using so much CPU load average.
marcelorodrigues
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