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0
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0answers
7 views

Can SQL Server 2008 R2 be used to allocate resources by specific program?

Recently, I have come into a scenario where I have been brought in to help manage a hosted system where we host our own product for our customer. Each customer is given a unique user to a specific ...
0
votes
0answers
11 views

MS SQL Server CPU load goes up dramatically when turning on 2014 features by setting compatibility level [migrated]

I'm running some Microsoft SQL Server 2014 load testing on a decently spec'ed machine. I'm certainly not an expert on the SQL Server tuning specifics, but with the bits an pieces I've gathered from ...
0
votes
1answer
33 views

VPS policy states CPU usage limitations

I have found a cheap vps solution to cover my needs. Reading through the policies of the vps service, I found that they state "CPU usage should not exceed 70%". Is there a way to prevent this? I plan ...
10
votes
7answers
1k views

High CPU utilization but low load average

We are running into a strange behavior where we see high CPU utilization but quite low load average. The behavior is best illustrated by the following graphs from our monitoring system. At about ...
0
votes
1answer
71 views

Apache2 Serverload / CPU increase from 1% up to 90% - How to debug?

I´m using: Google Cloud Compute Engine Linux Debian + Apache2 Google Cloud SQL Wordpress Yesterday my CPU started increasing from 1-5% to 80-90%. I was developing on a wordpress site as it ...
1
vote
1answer
47 views

Isolating a high-CPU PHP Process

I have a 16 CPU core server that's experiencing consistent load averages of 40-70. After camping on a top command for a number of hours, I've isolated the CPU spikes to a single user. After pressing ...
0
votes
2answers
22 views

How to measure CPU based on a threshold

We are tracking down the resource requirement for our production environment(windows). I need to find out the maximum CPU and memory utilization. I do understand that we can use the wmic command to ...
3
votes
0answers
41 views

Windows Servers on ESXi 100% CPU at year rollover

We have a number of Windows Server 2008 R2 SP1 servers running on ESXi servers. At year end rollover 2014 to 2015 the CPUs go to 100% and the machines hang. The solution appears to be a hotfix ...
0
votes
1answer
51 views

htop CPU usage information does not look consistent

Please have a look at htop screenshot below You can see there that current host has two CPU cores (or CPUs). All processes are ordered by CPU usage descending. So how is it possible that with ...
0
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0answers
36 views

Counterintuitive drop in CPU

I am running a memcached service in a linux container pinned to a specific physical core. As expected the CPU increases when the number of requests increase. The requests are sent from a workload ...
0
votes
1answer
32 views

Allow Apache use more memory

I use apache2 behind nginx on 8 core CPU 48GB RAM server. Now my system uses only 3GB of all memory, but there are high load on CPUs. How can I use my free memory instead of CPUs time? I also use ...
0
votes
0answers
67 views

Wordpress High load average 18 and cpu 81% on a dedicated server

my website works fine the day; load average below 3 and cpu below 50%. but at night load average 18 and cpu 81% and the website become very very slow. Photos are showing the active visitors at ...
0
votes
0answers
62 views

High CPU load because high CPU time for sys

I am using MariaDB galera cluster with two nodes + one node for arbiter. My system has 24 core CPU. I am getting stuck with CPU bound. Sometimes, my system consume CPU time to 1000% and CPU load get ...
2
votes
1answer
245 views

XenServer 6.2 VM 100% CPU and 100% memory usage and won't boot

I had this problem today after a power failure. I had 2 vms and one of them won't boot and was using 100% of CPU and 100% of memory. Since it was very dificult to solve (at least for me) I want to ...
-2
votes
1answer
69 views

High IO wait when test disk with dd

My server is using two SATA disk Raid 1. I test disk using dd #!/bin/bash i=0 MAX_LOOP=10 while [ $i -lt $MAX_LOOP ] do dd if=/dev/zero of=/data/output bs=1G count=10 ((i++)) done ...
1
vote
1answer
124 views

System not being able to handle soft interrupts but having idle time?

I have a constant 5% and more CPU time spent in handling soft interrupts. Doe to that, the ksoftirqd is running almost constantly, but is using a very small amount of CPU (less than 1%). However, ...
2
votes
1answer
99 views

CentOs CPU usage 100% by sync_supers

I see it in the top -c Then I run strace of this process and see a lot of select(8, [3], NULL, NULL, {0, 0}) = 0 (Timeout) What should I do next? How can I find the reason of this? Any help ...
17
votes
2answers
1k views

How are CPU time and CPU usage the same?

In the Wikipedia page for CPU time, it says The CPU time is measured in clock ticks or seconds. Often, it is useful to measure CPU time as a percentage of the CPU's capacity, which is called ...
0
votes
0answers
32 views

How to reset CPU counters? [duplicate]

I have a Linux server (Debian 2.6.32-46-amd64) which has been online for 117 days. The server is basically an Apache + MySQL, and MySQL was usually at 100~200% CPU usage (using top) being the server ...
0
votes
1answer
499 views

Optimal configuration of “Processor load is too high” trigger in Zabbix

I monitor approx. 10 Linux servers with 4 CPU cores each with Zabbix. I was receiving way to many false alarms from "Processor load is too high" trigger lately. The "Processor load is too high" ...
1
vote
1answer
120 views

Website performance sluggish - High CPU and Disk Usage

Over the past couple of days my website's performance has been very sluggish, with queries taking a lot of time to execute. My CPU usage hit around 100% 4 times this week. Here is the output of top at ...
0
votes
1answer
66 views

PostgreSQL queries slower than before?

I am using PostgreSQL 9.3 server on my production server. Everything had been working fine for the past couple of months. But since the past week or so, PostgreSQL seems to have becomes very slow with ...
2
votes
2answers
205 views

Sudden increase in CPU usage and server response time

Over the past 10 days, I'm suddenly experiencing increased CPU usage on my website with CPU usage reaching 100% three times. During that time I'm unable to SSH to my website so I haven't been able to ...
3
votes
1answer
127 views

High CPU on MySql Fusion-io server

I've just finished reading this old Q&A which had some really good detailed information on a similar setup to ours, though unfortunately our problem (now) is not with replication. MySQL ...
-2
votes
3answers
121 views

Find Script start time and uptime in centos

I have a php script (cron job) running on my server which takes up a lot of cpu. I took a look on the code and couldn't find anything wrong. Now I have to check the logs for anomaly and for this I ...
1
vote
0answers
268 views

Amazon EC2 T2 Small Instance CPU Usage Exceeding Limits

I am running WHM/Cpanel on an CentOS6.5 AMI on a Amazon EC2 T2.micro Instance. T2 instance baseline performance and ability to burst are governed by CPU Credits. Each T2 instance receives CPU Credits ...
9
votes
4answers
673 views

ps aux hanging on high cpu/IO with java processes

I'm having some issues with java process and nrpe checks. We have some processes that sometimes use 1000% cpu on a 32 core system. The system is pretty responsive until you do a ps aux or try to ...
2
votes
2answers
134 views

Solaris 10 ZFS ARC Maxed Out and CPU's Overloaded

We've been running ZFS for a couple years now on Solaris 10 on Oracle M5000 Enterprise server with 32 CPU cores and 256GB of memory. We are running a database/application on this server which appears ...
5
votes
4answers
827 views

vCPU performance between 1 or 2 vCPU's

Within virtualisation (Predominantly VMware) is there a performance advantage using either 1 CPU with 4 cores or 2 CPU's with 2 cores? Let's assume the application running on a VM can use two CPU's.
0
votes
0answers
30 views

High cpu usage of Play server when started by monit

When I run "play start" from command line, the CPU load is very light. But when monit starts the program (as the same user), then the CPU usage tends to 100 - 130% all the time! Here is the content ...
0
votes
1answer
250 views

high load average and cpu usage

I am experiencing high CPU usage here is the stats i got from server, the consumption after every restart in 15 minutes go upto 100%, what could go wrong? I have a site in laravel installed on the ...
0
votes
2answers
66 views

MySQLD is using 175% of the cpu

On one of the servers, I have mysqld running as slave DB. The CPU usage is 175% at the moment used by mysqld. Here are the results of SHOW PROCESSLIST; ...
1
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2answers
70 views

Set different warning thresholds for Nagios on weekends

I'm using Nagios to monitor CPU usage on my servers with the check_load plugin. On weekends we have some batch jobs running and there are hardly any real users anyway, so I'd like to have the warning ...
0
votes
0answers
89 views

Tomcat reach close to 200% CPU usage even after I stop all applications using Probe

I have a running tomcat that is reaching 198% CPU usage. I though that maybe it was one of its web applications however, I stopped all applications using Probe but the CPU usage did not go down. This ...
0
votes
2answers
113 views

Limiting process CPU usage

I have a Debian server (Linode) with 2GB of RAM and 2 CPU cores which I currently use as an email server and web server. I've recently installed Atlassian JIRA and noticed (with htop) that using JIRA ...
0
votes
1answer
45 views

How to understand details of CPU usage

I have a VPS server. At the CPU usage chart I see long periods of 50% CPU usage that are not related to chart of visitors of my site: http://c2n.me/iRJplq. I checked top and most of the time fastcgi ...
0
votes
1answer
371 views

How can I get the CPU usage for a given process out of collectd?

I'm running multiple ubuntu (precise) boxes & I've got collectd pushing data up to a central logstash box, which is then sending it to carbon (graphite). I'm running the processes plugin for ...
0
votes
1answer
461 views

High CPU usage in my digitalocean droplet [closed]

I am experiencing high CPU usage here is the stats i got from server, the consumption after every restart in 15 minutes go upto 100%, what could go wrong? I have a wordpress copy installed on the ...
0
votes
1answer
140 views

server using too much cpu with nginx and gzip enabled [closed]

I have magento website on dedicated server. I decided to use gzip to save ban-with for magento websites and wanted to load them faster. But now server is using %250 more cpu if I click on a category ...
0
votes
1answer
98 views

Why does Apache split up the CPU for www-data processes out of 100 or 200?

It seems like Apache always splits up the CPU usage for www-data processes out of 100 or 200. Why is this? For example, one www-data process = 100% CPU usage: http://i.imgur.com/mfRuOSm.png Four ...
1
vote
1answer
61 views

Apache high CPU usage but medium overall CPU usage

I am running a website on an Apache server. The server itself is an 8 core server with 35G RAM. I am monitoring the statistics of the apache resource usage and the overall server resource usage. I ...
2
votes
4answers
1k 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 ...
2
votes
0answers
77 views

Exchange 2010 on KVM - CPU usage reporting incorrectly

Good Morning, I have virtualized an exchange server using KVM (proxmox actually). It is Exchange 2010 SP3 running on server 2012 R2. KVM version 1.7.1. I am using the latest (0.1-74) virtio ...
0
votes
1answer
979 views

VPS CPU usage very high

I just switched my hosting to a VPS. I will admit that server admin is something I am very very new at. Anyhow, I am getting repeated emails about my server load exceeding 100% so i clearly need to ...
0
votes
0answers
57 views

How to Prioritise ssh logins (nice)

Exact duplicate of this question, which has an accepted answer that doesn't solve the problem. How do I set sshd to run with a higher priority, so that even if the system is massively overloaded ...
-1
votes
1answer
76 views

Does/can serving larger files (images in this case) necessitate increased CPU load on a linux/apache web server?

We are experiencing quite a high CPU load on our web server right now (I'm just doing some research, I am not actually the website's administrator) One of the most significant changes has been a new ...
4
votes
1answer
609 views

Growing OS cache in RAM causing high system CPU usage

Long question, so please bare with me: 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 ...
1
vote
1answer
143 views

After Robocopy backup, explorer.exe is using 100% of CPU on critical fileserver

Last night, I did a routine manual backup using Robocopy backing up and entire drive of a critical file server (windows 2008 r2) to a backup server on the same network. This morning (around an hour ...
-3
votes
1answer
51 views

Comparing “user time” for same operations on different cpu

In my accounting system i limit using cpu-time by user. But on servers with different cpu's same operation may take different cpu-time. Now i want compare perfomance for my servers to introduce factor ...
1
vote
0answers
107 views

virsh vcpu_period and vcpu_quota

I have been looking into ways to divide my CPU amongst KVM guests other than by just setting vCPU access limits. I understand the concept of cpu_shares which can be set/displayed with virsh schedinfo, ...