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0
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1answer
321 views

Apache/Passenger and cpulimit

I run a ruby on rails site that processes email - the email is dumped directly into the web app via a POST from postfix. At times I can get a burst of email coming in causing a prolonged surge in ...
1
vote
2answers
1k views

php-fpm: very high server load

Since today my webserver (nginx + php-fpm + mysql on a VPS) is very slow. htop says: 1 [|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||100.0%] Tasks: 63 total, 13 running 2 ...
2
votes
3answers
263 views

What kind of Windows-based “process accounting” software is available?

Linux has pacct and kernel-based processing. What equivalents are available for Windows? I am aware (and use/recommend) of Process Explorer, but that only tracks real-time stats, with non-portable ...
3
votes
1answer
3k views

CPU Usage while running command in command line

I am looking for a way to output CPU usage percentage via the command line. I ran across this: wmic cpu get loadpercentage which gives me the desired percentage output however I want to test the CPU ...
2
votes
1answer
3k views

PHP processes run one at a time, always taking 100% of one core

We have seven websites written in PHP running on a Windows 2008 server with IIS 7.5. They are all very slow right now. When I look in Task Manager, I see around 10 php-cgi.exe processes, and they ...
3
votes
1answer
1k views

Amazon EC2: how to find out detailed CPU usage?

I am running several EC2 instances, and I want to know the exact work my CPU is doing. On "normal" machines I am doing this with munin and its CPU plugin which looks at the statistics provided by ...
0
votes
1answer
526 views

Munin: Graph not plotting one label

I have set up munin to monitor EC2 instances. Now my CPU usage graph (using the unmodified cpu plugin) looks like this: The problem is that the "iowait" parameter is returned correctly (see text ...
1
vote
1answer
568 views

Limit CPU usage by Apache processes

I know there is a nice mod called mod_loadavg, but it seems it doesn't work with Apache 2.2.22. Can you tell me what else should I use ?
12
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11answers
7k views

What creates CPU I/O wait but no disk operations?

I have CPU I/O wait steady around 50%, but when I run iostat 1 it shows little to no disk activity. What causes wait without iops? NOTE: There no NFS or FUSE filesystems here, but it is using Xen ...
3
votes
2answers
3k views

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?
4
votes
3answers
5k views

Intermittent high CPU (100%) on production webserver

X-Post from StackOverflow: http://stackoverflow.com/questions/9465123/intermittent-high-cpu-100-on-production-webserver We have a web cluster with 3 web-servers, each with 24 cores & 24GB mem. ...
0
votes
1answer
548 views

Django/MySQL/Memcached for 10K user visitors

I'm currently using CentOS (512 RAM, Dual-core CPU) for my website. Here are the specs: Django 1.3.1 Python 2.7.2 Apache 2 with mod_wsgi 3.3 MySQL 5 (about 5,000 records) Memcached (120 MB for ...
2
votes
1answer
272 views

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 ...
0
votes
2answers
630 views

Monitor memory and CPU usage per website

The Plesk panel associated with my Linux RHEL5 server reports the CPU, memory and disk space of the server in real time although it's not possible for me to find out which websites are consuming most ...
1
vote
1answer
636 views

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 ...
4
votes
4answers
7k 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 ...
1
vote
1answer
432 views

Is there any way that I can control the CPU resources sharing among Xen virtual machines?

I'm going to set up three or two Xen virtual machines on one physical machine. I want those VMs to share different CPU time on average. I've Googled for a long while but still haven't been able to ...
0
votes
1answer
4k views

High CPU load on QNAP TS-659

We have a QNAP TS-659 Pro+ Turbo NAS in our office. Its hardware/software is: 6x SATA II HDD (total 4.5 TB) Intel Atom D525 1.8GHz 1GB DDR2 Firmware - 3.5.2 Build 1126T (latest available) Linux ...
0
votes
1answer
2k views

kblockd and kjournald high cpu

I have a server that has 5 GB Ram and 3k MHz quad core CPU. It runs CENTOS 5 and usually worked ok. For a month or so I've been having problems with it, the load average raises above 4 and parts of it ...
6
votes
2answers
1k views

Prioritise ssh logins (nice)

Is there a preferred way to set "nice" for sshd? I need priority given to sshd such that I can login and easily fix stuff when something has gone wrong (eg DoS, badly behaved processes, etc)
4
votes
1answer
645 views

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 ?
0
votes
3answers
769 views

Mysql full text search cause high usage CPU

We built a news site. Every day we will input tens of thousands data from web api. In order to provide a precision search service, our table use MyISAM, build fulltext index (title, content, date). ...
1
vote
1answer
314 views

random high cpu load on linux box

It was all working fine couple of days ago (never jumped above 3.0). But now, the load average for 1 minute jumps well above 10, may hit 20, and then goes back to 5-6, maybe 3. The htop shows me ...
1
vote
1answer
153 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 ...
9
votes
3answers
3k views

Why is my router CPU at 40% when no processes use more than 2%?

I have a problem, I have a Cisco 1841 running Cisco IOS 15, and I get strange behavior. The CPU usage is shown as 40%, but there is no processes that is using this much CPU power. Here is an ...
1
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2answers
2k views

Increase an Ubuntu Server CPU number on VmWare ESXi

Can I increase the number of processors dedicated to my Ubuntu Server 10.04 virtual machine without creating problems to its functions? It will be accepted without hassle or I should do something at ...
2
votes
8answers
2k views

cpu utilization over 100% in linux system

In one of our production Linux servers, CPU utilization is crossing 100 % and sometimes it is 250%. How can I find which process is using more CPU utilization and where can I find CPU utilization ...
4
votes
4answers
2k views

CentOS - High CPU Usage at a particular time in the night

I have a CentOS-5 server that has very little load. A typical output of "sar" command shows like this: 02:20:01 PM CPU %user %nice %system %iowait %steal %idle 02:30:01 PM ...
0
votes
1answer
733 views

SAR statistics on CPU usage

i have Ubuntu server with 2 processors. top command show that mysql eats up to 195%. sar shows the following: 08:30:59 AM CPU %user %nice %system %iowait %steal %idle 08:31:00 ...
0
votes
1answer
253 views

How to calculate CPU utilization of a host that VM can take before deployment based on the VM template information?

I am trying to figure out based on the VM template information like NAME = vm-example CPU = 2 MEMORY = 1024 DISK = [ type = swap, size = 2048, readonly = "no" ] How can I calculate ...
1
vote
1answer
413 views

Mysterious per-session CPU limiting?

TL;DR: CPU-hungry processes are sharing cores on a multi-core server while other cores sit idle, whereas I expect the Linux scheduler to distribute jobs evenly across cores. What could cause this ...
-1
votes
1answer
378 views

Cpu usage from top command

How can i get the result like example following. Any command or scripts? Snapshot u1234 3971 1.9 0.0 0 0 ? Z 20:00 0:00 [php] <defunct> u1234 4243 3.8 0.2 64128 43064 ? D 20:00 0:00 ...
3
votes
2answers
698 views

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 ...
1
vote
2answers
2k 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 ...
0
votes
1answer
633 views

How do I troubleshoot high vmstat sy

I have a Solaris server with very high vmstat sy time. What tools can I use to identify which process is causing the high system cpu usage? kthr memory page disk ...
3
votes
1answer
385 views

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 ...
0
votes
3answers
902 views

How to know what is consuming the CPU on my Ubuntu Lucid server running in Linode instace?

I've a Lucid 10.04 instance running on Linode which is hosting a simple rails3 app. Now I'm getting several email complaining the CPU usage almost 100%. But I'm not being able to figure out what is ...
1
vote
4answers
1k 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 ...
1
vote
1answer
568 views

400% CPU usage for MySQL? What? What should I do?

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 19857 mysql 20 0 514m 47m 3404 S 386 9.7 4511:45 mysqld 15659 www-data 20 0 205m 11m 4856 S 7 2.3 0:00.67 ...
0
votes
2answers
227 views

Citrix XenApp slowness on ESX 4

I need some help with a some CPU constraint issues( i think) diagnosis. I have a client with a Citrix Xenapp farm (5 desktop servers/9 Application servers) spread accross 12 ESX hosts running ESX4.0. ...
1
vote
2answers
426 views

SLES guest on HyperV: high CPU usage vs. accurate time keeping

Here is the issue: SLES 10 SP1 guest is running on HyperV. I need accurate timekeeping on this box, so I have applied these kernel parameters (which were proven to work on other identical SLES 10 SP1 ...
0
votes
1answer
2k views

Total CPU Utilization of a Server

How to find total CPU utilization of a server using SNMP ? I am trying to find the CPU utilization % of one server having 64 CPU's ? Thanks.
2
votes
2answers
694 views

What is the OID address for getting the CPU loading & physical RAM usage in WinXPsp3 & WinServer2003r2sp2 via SNMP?

I am trying to use snmp to get the usage of CPU & physical RAM from remote PC (WinXPsp3 & WinServer2003r2sp2), after google many hours I did not find any exactly OID address for them. I have ...
1
vote
2answers
148 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
votes
1answer
154 views

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 ...
2
votes
2answers
161 views

What does this command do on Linux? It is eating my CPU.

I have a VPS and I am hosting a game site on it. Recently my CPU went to 3000% and memory is going near full. When I checked the processes I found this process eating the CPU: Pid-1571 (Trace) ...
3
votes
2answers
3k views

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 ...
1
vote
1answer
832 views

top command indicates a different cpu usage than sar command

In my CentOS server, when I check the resources with sar command, user cpu usage is around %15 while in top command the sole 'java' process uses like %99 of cpu. sometimes it's even goes further than ...
1
vote
2answers
299 views

Making processes lower priority. Niceness isn't seeming to cut it

I run a game server. Every 12 hours or so we have to generate a map of the server for our website. The process takes about 20 minutes and burns the CPU hard the entire time, which lags my game server. ...
0
votes
3answers
114 views

CPU usage messuring?

I have a Windows 2003 cloud server and I did like to checkout the current usage of cpu and memory of 2 applications I have currently running but I am not sure of what would be the right tools to check ...