The cpu-usage tag has no wiki summary.
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MySQL Process Big
Ok, so I don't know if this is a repeat question so I'm sorry if it is (I couldn't find anything like it after searching =/)
My server seems to be running what seems to me a larger than normal mysql ...
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2answers
2k views
Need help trouble shooting high CPU usage by PHP-fpm
There is a problem that is driving me crazy. After the day I tried to fix the CPU usage problem of my VPS, the CPU load has grown from 60% to 150%, and I have no idea what causes the problem. Please ...
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4answers
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How can I get combined CPU usage for all CPUs in one line on Linux? [closed]
I want to output the following:
Average CPU utilization across all cores, over the last n seconds, in a single percentage value.
So if I have 4 CPUs and their combined user and system utilization ...
2
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1answer
92 views
Apache high CPU usage, setting a overload limit
On a ubuntu server, I run a LAMP environment with APC, and fast-cgi as php mod, to host 2 wordpress sites, and both sites have Wordpress Total Cache (W3TC) plugin configured.
The server's specs are: ...
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1answer
46 views
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 ...
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1answer
194 views
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
...
1
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1answer
50 views
CPU Usage vs load average [duplicate]
I'm running debian
iostat -x
Linux 2.6.32-5-amd64 (server56856.uk2net.com) 27/04/13 _x86_64_ (4 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle
4.59 0.01 ...
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0answers
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How to find out CPU usage of DLLs within an instance of svchost.exe
My Windows Server 2008 R2 should be almost idle, yet it's taking about 12-15% CPU almost all the time. The busy process is an instance of svchost.exe
Using SvcHost Process Analyser, I've established ...
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2answers
41 views
High Processor Usage
I have a Linode VPS and am getting alerts regarding high CPU usage every few days - a reboot solves the problem - but would rather find the issue.
I'm running Ubuntu 12.10 and other than PHP, MySQL ...
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1answer
26 views
How to configure Apache so that I can get server resource stats per website / per script
How can Apache be configured so that it will be simple to get server resource stats (CPU, memory) per website (as defined by a separate sites-enabled entry) and / or by script (each .html or .php file ...
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1answer
67 views
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", ...
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2answers
1k views
/lib/udev/net.agent causing high CPU usage
We have a number of Soekris boxes running Debian Squeeze. They were installed through an automated process consisting of using deboostrap and copying it unto a Compact Flash card. We use puppet to ...
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1answer
66 views
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, ...
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1answer
46 views
Understanding CPU Throttle
kernel /vmlinuz-2.6.32-379.22.1.lve1.2.17.el6.x86_64 ro root=UUID=7cb0b445-0f63-4ef1-ab73-93c114d8ef6c rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto ...
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0answers
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Why does a mysql query, that requires copying to tmp table, randomly sometimes consume 100% CPU during several seconds?
I have some crazy SQL queries in my PHP scripts which badly need some optimization. However the question is NOT about how to optimize them.
These queries have a lot of "join"s and some bizarre "order ...
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2answers
500 views
Is there a Windows equivalent of Unix 'CPU steal time'?
In order to assess performance monitoring accuracy on virtualization platforms, the CPU steal time has become an increasingly relevant metric - see EC2 monitoring: the case of stolen CPU for an ...
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2answers
1k views
How much resources should backup tools be using? ( issues with clBackup )
My hosting provider makes backups of our servers using a tool called clBackup which pushes files over the network. Below is one ps output we took and reported to our provider:
top - 10:06:24 up 25 ...
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1answer
144 views
CPU spec for VPS hosting
I'm looking at various VPS hosting providers, and I notice that while many of them will give you the spec of the VPS in terms of how much RAM, hard disk space and bandwidth you will be provided, very ...
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4answers
3k views
How can I investigate sustained high CPU usage by Microsoft.Exchange.Rpc.ClientAccess.Service.exe?
One CAS server in our array has nearly 90% of its 4 CPUs used. The remaining CAS servers are at 30 percent.
How should I investigate what is causing this increase?
Below is a graph of:
Six ...
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2answers
52 views
When upgrading hardware to increase program performance, which should I consider first CPU, RAM or both? [duplicate]
I have a simple script that I wrote in PHP (which, after reading lots of QAs seems to have less than desirable memory management). It's an extremely small script that loops through configuration ...
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1answer
168 views
iexplorer.exe high CPU/RAM usage
My client has a virtual Server 2008 R2 terminal server running under ESXi 5.1.
This server has, which been in production for around 4 months, experiences intermittent slowness / non-responsiveness ...
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1answer
77 views
CPU load steadily increasing and MySQL 1.5 GB open deleted file in temp directory
I have a CentOS server that is running cPanel (shared hosting server), I have had troubles with MySQL before and I spent some time configuring and tuning it, until finally the load dropped (from ...
0
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1answer
88 views
Two CPU cores at 100% utilization after soft lockup on two CPUs, is this normal?
I had two of my CPUs lock up on one of my servers. From dmesg:
BUG: soft lockup - CPU#1 stuck for 23s! [vmx-vcpu-0:6148]
and later:
BUG: soft lockup - CPU#2 stuck for 23s! [vmx-vcpu-0:6148]
I'm ...
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0answers
27 views
Pressflow 6 Mysql exhausting CPUs
I have an AWS EC2 m2.2xlarge instance running a myisam mysql DB for pressflow 6. The website is getting a little more than 8MM pageviews per month.
Since a couple of months now, the CPU is being ...
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3answers
388 views
Windows Server 2008 task manager shows not more than 25% cpu usage for a process, how to increase this value?
Is this a feature or limitation compared to ordinary single user Windows 7/8? Is there a way to give one user access to say 50, 75% of overall cpu resources for running a software/process?
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4answers
506 views
Ok to disable DNS Client Service on Windows 2008 Web Server due to high cpu usage?
Occasionally on one of my web servers the 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 ...
0
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3answers
42 views
Finding the file/script that invoked a process
I do have a high CPU utilization PhP Process. This process in turn seem to invoke mysql and
both processes together are using all the CPU cores and RAM
using
ps aux | grep php , i could get the ...
1
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2answers
97 views
Scaling Python CGI scripts [closed]
I have Apache running on a quad-core Ubuntu server on a 384kbps ADSL. Files are uploaded by users via a web-form and processed by various Python programs running as CGI scripts. Some scripts are CPU ...
0
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2answers
112 views
Where is the high load coming from?
Last night I recieved a lot of messages from DirectAdmin saying: load average on your system is 46.86, or some similar number. It comes with a 'top' printout, but all I can tell from that printout is ...
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2answers
156 views
CentOS log high cpu usage [closed]
I have a CentOS server running on a VPS via Virtuozoo containers.
I feel like there are high CPU usage spikes. Is there a way I can log every time CPU usage goes beyond a certain limit lets say 50%.
...
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3answers
1k views
Massive CPU usage spike, How do I find out what causes it?
I have a server running CentOS Linux, and very rarely (maybe once every 3 months) something happens that causes it to have an exceptionally high CPU load (400%) that causes the server to basically ...
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wordpress on LAMP causes constant 100% CPU usage
i have a Linux V-Server with multiple domains at Hetzner in Germany.
The Server is running CentOs6 with updates from a week ago and LAMPP.
The most important site is my Wordpress blog.
On Thursday ...
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1answer
155 views
Which Apache parameters responsible for high CPU usage and slower response?
Two dedicated separate servers running with identical configuration of hardware (Dual E5-2620 32GB) in similar environment (CentOS 6.3, Apache+PHP+MySQL) serving similar tasks, but behaving in ...
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1answer
208 views
Linux Load Averages and HyperThreads
My rough understanding of a Linux load Average is that for every integer a CPU core is working all the time. EX 1 means on a 4 core system that 1 core is working at capacity. How does HyperThreading ...
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270 views
Ruby: High CPU usage
Im getting that alert (Linode server) every couple of day.
Top shows 110% usage by ruby.
In not doing any script with ruby, but i do use Redmine and SASS on this server, how do i debug this? how i ...
0
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1answer
48 views
High mysql throughput / cpu utilization
Once in a while, our server starts lagging. It always start around 6:00 ( GMT + 1) in the morning and ends around 3 till 4 hours later.
We have munin installed and we see a peak in CPU utilization ...
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3answers
311 views
Why Are My High CPU Processes Located In /usr/bin/?
I keep getting RAM and CPU spikes but I can't figure out where it is coming from.
If I look at the Process manager, I see,
/usr/bin/php /home/hellohel/public_html/index.php
Repeated several times. ...
4
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1answer
427 views
VMWare - High CPU utilization on Windows 7 guest VM
I've just added some Windows 7 virtual machines to an existing VMWare vSphere 5.1 cluster. The hosts and vCenter are 5.1 with current updates via Update Manager.
Looking at the vSphere client ...
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2answers
118 views
Does Apache2 run faster if I have more CPU?
I have a cloud server, with:
5120 RAM and 4.6Ghz
My question is: if I add more CPU, (11.5 Ghz) will the load time of the pages be higher?
I mean, is this always gradual? More CPU = faster pageload? ...
1
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1answer
179 views
How can I log the most CPU-Intensive processes in regular intervals?
I have a server which is idling below 5% cpu load most of the time, except from a few times a day where I can see some minor cpu spikes. I found out about this by using PRTG.
How can I find out what ...
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0answers
89 views
cannot find high load cause
I cannot find high load cause. CPU usage is not high. Maybe disk is causing high i/o, but disk utilization is not that high too. The peaks around 4:30am is backup time and not that important.
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2answers
374 views
What is causing high cpu usage? [closed]
My host says that I'm using too much resource and I don't know what's causing it. It is running Ubuntu 10.04 LTS 32bit. It has 2GB RAM with 2GB SWAP. I run nginx as the webserver with php-fpm & ...
3
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2answers
186 views
Uneven CPU core utilization
tl;dr: First CPU core is consistently saturated, all other cores are consistently under-loaded.
A VM, inside Ubuntu-based Xen XCP:
$ uname -a
Linux MYHOST 2.6.38-15-virtual #59-Ubuntu SMP Fri Apr ...
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2answers
189 views
Amazon EC2 - how to determine how busy each CPU is
I have an Amazon EC2 micro instance. I believe that this is 1 core (or 2 for periodic bursts) with 4 CPU's. I'm getting confused with the terminology (ECU vs CPU vs Core) but really I would like to ...
0
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1answer
236 views
ntvdm.exe is using a lot of CPU
One of my servers is a Windows 2003 Enterprise Edition SP2. Usually there are up to 14 people logged in during all day. They use regular programs like Office 2010 or any internet browsers and a couple ...
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1answer
135 views
How do I decide what type of hardware to use for a firewall? [duplicate]
Possible Duplicate:
Can you help me with my capacity planning?
What are the hardware performance requirements to set up a PFsense firewall on my gigabit Ethernet network? Is ...
5
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1answer
340 views
Very uneven CPU utilization with SQL Server 2012 on 2 processor computer with 16 cores / processor
After installing SQL Server Enterprise 2012 with the Server + Cal license model, on a computer with 2 processors each with 16 cores (and no hyperthreading involved) and putting the server under ...
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2answers
176 views
Monitoring Redis and mysql server for memory and cpu usage
I want to compare the memory and cpu usage of the the redis-server and the mysql-server. I have used a profiler to get the client data but I would also like to know what is going on on the servers ...
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0answers
278 views
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 ...
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1answer
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100% Hardware IRQ while PHP just seems to hang for a second
I'm running the FLOW3 Quickstart on a Fedora machine (virtualized on Windows, if that helps). Each and every single request takes about 1.2 seconds to run the most simple example of this framework. I ...
