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

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0
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1answer
48 views

%CPU at 99% when cronjob runs php script every minute

I am using a debian server and for some reason when I run this php script using crontab every minute it says that I am using 99% of the %CPU with the php command (in the cronjob the command is php) ...
0
votes
1answer
22 views

How can I keep a third-party cloud provider accountable for guest VM performance?

I support an ERP system for a manufacturer. We're experiencing intermittent application performance issues on our database, hosted on VMware by a third-party cloud provider. (They're a smaller ...
12
votes
5answers
40k views

TrustedInstaller.exe takes a lot of CPU

Does anyone know how to fix issue with TrustedInstaller.exe when it takes a lot of CPU? Operating system: Windows 2008 x64 Windows' Modules Installer service is set to Manual.
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0answers
35 views

Server peak in CPU usage every few minutes and massive “Write” happening [closed]

As of approximately 5 hours ago suddenly our website became really slow; we have some idea as to why this is happening (mysql queries) however even with fixing those queries the site is fine and ...
1
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0answers
18 views

What's the impact of a high cpu steal time on XenServer's dom0?

From what I understand, cpu steal time is the CPU time that the VM kernel requested, but was denied by the hypervisor because it was serving another VM. We have a XenServer that has dozens of VMs ...
-1
votes
1answer
53 views

number of cores available on a server

I need to find out, how many cores are available on a server at that moment. For example, it is a 8 core machine and running at 50% CPU utilization. Can this be assumed as 4 cores are available? or is ...
3
votes
0answers
30 views

What process on a SonicWall Security Appliance Checks the DPI-SSL Client Inspection?

I'm interested in determining if there is high CPU usage on a SonicWall Security Appliance, but I don't know which process to check for high CPU usage. There are various options for this in the UI ...
0
votes
0answers
17 views

Definition of CPU Ready for vmware ESXi host compared to CPU Ready for a guest?

We had a guest with poor performance. CPU Usage and CPU Ready for the guest was within normal range. For the host the CPU Usage were normal (70%), but the CPU Ready for the host seems to correlate ...
-1
votes
1answer
52 views

High CPU being caused by garbage collection in w3wp.exe [on hold]

I am having a problem with High CPU happening on my my website in IIS8. This happens randomly and not very often but it does happen especially when the load is heavy on the site. The only way to ...
0
votes
1answer
23 views

php-cgi.exe CPU load jumps after MySQL Backup

I'm running Windows 2012r2 on a new server, with Plesk 12.5 and MySQL 5.6 installed. There's a backup script which takes a DB dump and zips website data files that runs each day. However, it brings ...
3
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0answers
34 views

Right way of measuring overlay network performance

I am currently examining the performance (especially UDP throughput) of different Docker overlay networks. I do this by creating point-to-point connections between two hosts that are connected with a ...
0
votes
1answer
35 views

Handling highly CPU intensive process on server

I have a Windows server machine on Amazon EC2 (m4.2xlarge) which handles web requests, does some processing using an app A and returns the results. Problem is, this app A is highly CPU intensive and ...
2
votes
1answer
53 views

Why might 'mpstat' and 'pidstat' disagree about CPU load levels?

I'm monitoring a mysql process in ubuntu 12.04 using mpstat and pidstat, simultaneously. While debugging its CPU usage, I noticed something unusual. While both tools agree that CPU load is occurring, ...
0
votes
1answer
43 views

Windows server 2008 R2(standard) client connection is very slow after connecting above 24 client machines? Is there any client connection limit?

Windows server 2008 r2 standard is connecting 24 cilent machines after while adding extra machines to server it gets slow. In Windows server 2008 r2 maintaining the mysql database and all other client ...
1
vote
1answer
65 views

CPU frequency governor for virtualized guest in VMware

CPU frequency governor can scale the CPU frequency up or down in order to save resources. In a physical server usually have sense, but I don't know if this is applicable for a virtual guest running ...
-2
votes
2answers
55 views

Java process stay in running state and consume CPU

I have a jar running in background on a Ubuntu server. In a certain moment, the application start consumming too much CPU (400%) and 4 child process stay in R state: N.B: the problem is ...
22
votes
4answers
8k views

“Peaky” CPU Usage on Domain Controllers

We have two Windows Server 2008 SP2 (sadly not 2008 R2) Domain Controllers in a small 150 client domain that are exhibiting very "peaky" CPU usage. The Domain Controllers both exhibit the same ...
0
votes
0answers
22 views

Increase Memory and downgrade CPU on RAC 11.2.0.4 with 2 nodes

I have a RAC 11.2.0.4 on Linux x86 with 2 nodes with 3 databases with a total of 300GB(SGA and PGA) among all. What if a node has 512 of RAM and another node has 1 TB of RAM? What if one node has 2 ...
1
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4answers
77 views

10 min. bursts of CPU usage: how can I find out which processes are the cause?

The CPU usage graph above was generated by running psensor overnight on my linux box. Note the 10 minute bursts of activity consuming up to 40% of the Xeon. The machine ought to have been at idle ...
7
votes
1answer
9k views

How can a Perfmon “% Processor Time” counter be over 100%?

The counter, Process(sqlservr)\% Processor Time, is hovering around 300% on one of my database servers. This counter reflects the percent of total time SQL Server spent running on CPU (user mode + ...
0
votes
1answer
618 views

Webserver max CPU when apache and MYSQL are ran together

This website has been running fine without issues, Recently it went down. After some investigation it looks like the combo of MYSQL and Apache bring the box to its knees. Apache can run find serving ...
0
votes
0answers
28 views

Apache strace getsockname call is slow

While load testing I am getting almost 100% CPU usage by Apache processes. To find out the root cause I attached Apache process with strace and found slow calls. 11840 0.000063 accept4(3, ...
0
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0answers
118 views

Apache is using 100% CPU even with one user

Apache is using 100% CPU even with one user Apache (or should I say PHP through Apache?) is using 100% CPU for few seconds every time somebody search bugs at our bug tracker or just reload the search ...
4
votes
3answers
3k views

kswapd often uses 100% CPU when swap is in use

Most of the time when my computer starts to need swap, I see a massive spike in CPU usage (kswapd0 is consistently using 99%-100% CPU). According to top, the time is spent in sy (system/kernel) not wa ...
0
votes
1answer
135 views

Unusually large number of httpd processes and high CPU load on MongoDB replica set members

I am investigating a strange behavior on 3 CentOS machines serving as a MongoDB replica set, whereas one of them is also hosting a PHP web app utilizing the MongoDB replica set. The basic setup is as ...
0
votes
1answer
92 views

high mysql CPU usage more than %1500 on centos 6

I am running a high traffic websites on a Dedicated-Virtual 24GB RAM CentOS server hosted by the planet. Very often the server dies because of high CPU usage (%1500) When i check the running ...
3
votes
1answer
91 views

How to find what processes were running at a time in the past?

I am asked to investigate a high CPU usage alert which occurred this morning. I used sar -p and saw the high CPU usage showing up at that time Next I used ps -eo pcpu,pid,user,args | sort -r -k1 | ...
0
votes
1answer
52 views

Single Thread CPU Performance with PHP

I have a lamp web server running a website that is getting very feature bloated. I have a few pages that are taking 2-3 seconds of CPU time to render the PHP. Most other pages a processed in about .2 ...
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votes
1answer
80 views

Windows Server vs Ubuntu base CPU usage for AWS EC2 burstable instances [closed]

I recently switched from a small VPS provider to AWS EC2. My traffic usually comes in bursts throughout the day and I therefore concluded that running multiple t2.micro instances would be by far the ...
19
votes
4answers
28k views

Linux CPU usage and Process Execution History

Is there any way to see what process(es) caused the most CPU usage? I have AMAZON EC2 Linux which CPU utilization reaches 100 percent and make me to reboot the system. I cannot even login through SSH ...
1
vote
2answers
402 views

Load high with very little CPU usage?

The load has been sitting at around 6 but there is very little running on the box. Any ideas what's causing this? It's a large AWS instance. procs -----------memory---------- ---swap-- -----io---- ...
0
votes
2answers
64 views

No cpufreq sub-directory in one of the nodes in our cluster

How do you change the governor from Ondemand to something else ?
2
votes
1answer
4k views

iexplorer.exe high CPU/RAM usage

My client has a virtual Server 2008 R2 terminal server running under ESXi 5.1. This server, which been in production for around 4 months, experiences intermittent slowness / non-responsiveness for ...
2
votes
4answers
5k views

Nagios - measuring Average CPU Load

I've been looking for some hours now for a plugin that will notify me if one of my server's CPU Load has been over 90% for the past 5 hours. No luck looking around the Nagios Exchange. Can anyone ...
0
votes
1answer
48 views

CPU Load on Virtual Machine

This picture shows the CPU Usage of a Debian 8 installation running on a Virtual Machine (VMWare ESXi). I'm wondering about two things here Why doesn't the usage sum up to 200% (the virtual machine ...
8
votes
5answers
5k views

IIS App Pool High CPU usage despite no requests

I have recently migrated a set of Windows Server 2008 R2 / IIS 7.5 servers to new servers running Windows Server 2012 / IIS 8. I am experiencing some odd behavior from IIS. We have 2 identical ...
1
vote
2answers
54 views

What does take all the cpu here?

On a small SSD VPS I got 2 GB of RAM and 2 vCPU core (dedicated to my server), virtualized via KVM. So far so good. The server is mainly used for databases (MySQL) and fast network file storage (via ...
1
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0answers
157 views

high CPU caused by pthread_cond_wait or nanosleep

First of all, I've searched in stackoverflow.com and googled, but no effective results are found. My question is: Why does pthread_cond_wait consume so much CPU? I don't think it's normal. My ...
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votes
1answer
22 views

Tasks on server stay in sleeping

I logged into a server with multiprocessors and started 20 python programs, each processing part of my data. However, it cost too much time so I checked top and found all ipython processes are in ...
1
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2answers
165 views

Kubernetes Disable Grafana

We are using Kubernetes and successfully running our apps. However with our pods running and no traffic our minions are running with high CPU. Looking into the issue further: influxdb and heapster ...
1
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0answers
31 views

Can I limit wall clock time available for process on Solaris?

I would like (many) processes to be killed if still running after certain amount of time after execution. First I have thought that Solaris’ resource management is perfect tool for the job, as it ...
2
votes
2answers
2k 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 ...
0
votes
1answer
82 views

CentOS CPU load and CPU Freq

I have some Dual Xeon (X5650 @ 2.67GHz) server, with 72GB of RAM and HT disabled, but I have a problem. I host srcds servers (game servers) and they are really CPU intensive. The CPU usage is usually ...
20
votes
2answers
3k 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 ...
0
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0answers
39 views

Why a moved process using cgclassify doesn't get correct cpu share

Here is my test case on an Ubunut 12.04. I have a simple code that uses all cores of a multicore system as follows: useAllCores.cpp int main(){ #pragma omp parallel for for (int i = 0; i < 50; ...
6
votes
3answers
324 views

CPU overloaded but no proccess is using more than 1% [duplicate]

I am monitoring a Cpanel (centos) server which have a 2-core CPU (4 virtual CPU cores) and it seems to be overloaded because I got this values using top: load average: 11.80, 13.30, 13.02 Cpu(s): ...
0
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0answers
20 views

Server Recommendation for static pages only, Apache Nginix Ram [duplicate]

I have a question about setting up a new server that will be have millions of hits per day. There will probably be a max of 3 million a day with spikes up to 10 million. All the files will be static ...
1
vote
2answers
291 views

High server load with no processes using CPU?

I'm new to managing servers, and I've run into something that's stumped me. I received a warning from my VPS provider informing me that my load usage was very high. I hadn't run into this problem ...
1
vote
2answers
2k views

Excessive CPU Utilization for Bind 9.8.1 `named` processes

I just noticed that named is eating vast amounts of CPU time for a very small network with only a few domains. Can someone help me determine what is misconfigured, please? Or how to debug this. top ...
0
votes
1answer
182 views

Getting 502 Bad Gateway, php-fpm takes 100% cpu

Okay, last night, around 2am on one of my servers the cpu usages went up to 100%. When I checked in this morning, I saw 5 php-fpm processes taking up around 100% cpu together. I've rebooted the ...