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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.

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Why Windows 10 Virtual Machine show high CPU load on KVM hyprvisor

On KVM (Centos 7) Hypervisors Windows 10 Virtual Machines show High cpu usage. Around 30%. While other Linux, Windows 2k16, Windows 2k12 and Windows 7 Virtual machines just use from 1%to 7% CPU. By ...
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1answer
25 views

Windows Servers Commandline/PowerShell How to capture, CPU utilization as there in TaskManager?

For Monitoring windows 2012/2008 performance, I need to capture CPU utilization along with top 3 process names consuming CPU at the most, on Windows 2012/2008 Servers over command line. I've tried ...
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1answer
1k 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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WIndows 10 consuming large amount of CPU with explorer.exe [migrated]

I'm at a loss as to why my Windows 10 laptop is consuming so much CPU from explorer.exe instances. I've attached two screenshots showing five explorer instances using about 15% CPU each. I have ...
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3answers
3k views

IIS w3wp using high cpu with no traffic

I am seeing the following suspicious behavior on one of our web servers (IIS 6.0 on win2k3). two CPUs hyperthreaded into 4. In task manager and perfmon the w3wp.exe's cpu utilization does appear to ...
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Profiling CPU, memory, networking performance and generating reports

Background I have a performance-intensive (i.e. consumes a lot of CPU cycles, memory, and network resources) application. Multiple instances of this application, along with some third-party vendor-...
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1answer
68 views

Why does my VM become slower during CPU-heavy tasks after some days of runtime?

I'm dealing with some strange problem for some time now: After some days of runtime, one of my VMs seems to become slower on CPU-heavy tasks. One example were this happens is reading virus signature ...
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1answer
1k 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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2answers
4k 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 ...
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3answers
1k 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 ...
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Intermittent CPU spikes on EC2 instances

We have an web app that runs in AWS Elastic Beanstalk and uses Java as backend. Intermittently, one app server behind the load balancer crashes due to the CPU being used 100%. After some analysis, I ...
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Is it possible to configure Windows “resource exhaustion detector” to detect and log high cpu events, rather than just low memory events?

Is it possible to configure Windows "resource exhaustion detector" feature to detect and log high cpu events, rather than just low memory events? As some may know, if Windows detects a low memory ...
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2answers
2k 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 ...
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1answer
1k 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 ...
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1answer
477 views

I keep getting counter_cpu_share_used alerts in in Virtuozzo - do I have to take action?

On my Hosteurope vServer, I keep getting these counter_cpu_share_used alerts in Virtuozzo, basically whenever I actively use my vServer. Screenshot As you can see, I get red alerts all the time. It ...
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1answer
46 views

What does “CPU Minutes” mean exactly?

I'm actually trying to report cluster utilization in Slurm but i don't understand the metric CPU Minutes. [root@XXXX]# sreport cluster Utilization Start=2018-12-01 End=2018-12-31 ---------------------...
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1answer
2k views

Use of CPUQuota in systemd

I am trying to put a hard limit in CPU usage for a dd command . I have created the following unit file [Unit] Description=Virtual Distributed Ethernet [Service] ExecStart=/usr/bin/ddcommand ...
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1answer
4k views

How to assign dedicated vCPUs to specific VM on Proxmox (KVM) or what system could do that?

I'm posting this here, because what I've found about the topic is either outdated, incomplete or not suitable for various reasons. I have wanted for a long time to learn how to map specific vCPUs to ...
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1answer
3k views

Where should I start to try and debug a CPU spike and timeout when logging in to a Moodle site?

apologies for the newbie nature of this question .. I am a web developer though don't have too much experience maintaining servers or debugging and fixing performance issues. I have a Moodle site (...
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1answer
56 views

Improving NGINX Throughput on a Single SSL Thread

We are configuring a file delivery server using nginx. The server will be serving large files over HTTPS. We have run into an issue where we can only achieve around 25MB/s on a single HTTPS thread. ...
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0answers
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HaProxy Configurations Error while setting up multi proc environment

I want to achieve 6000/sec Requests and trying to setup HaProxy with muli proc Settings but Getting this Error. cpu-map expects a process number including 'all', 'odd', 'even', or a number from 1 ...
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Performance monitor triggering a batch script

I've created a batch script which once triggered it'll send myself an Email, the issue i'm having is i'm trying to set up performance monitor to trigger the batch file if CPU usage has been over 80% ...
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1answer
52 views

perfmon - single thread utilizing max CPU - how to detect?

I work as a windows server admin. Part of my work is to maintan servers and react to monitoring alerts which are often about high CPU load. Sometimes it happens that some app or process gets stuck in ...
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4answers
9k 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 ...
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2answers
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Can a high load on a VPS be caused by the underlying infrastructure?

My VPS started to have random stints of high load (around 2-3, but the system becomes extremely slow, running ls takes like 30 seconds). I hadn’t changed anything on it, there was pretty much nothing ...
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How to find which processes caused the system slowdowns? To be used after reboot

For the last few days my Ubuntu 16.04 suffers random slowdowns that it prevents the apps from loading and doesn't even allow me to connect via SSH. The only way I can resolve it is by rebooting the ...
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1answer
69 views

Identify the top processes when the overall system has large CPU utilization in Ubuntu server

I have a Ubuntu server running in EC2. Occasionally, I get a large CPU usage 99+% utilization as measured in EC2 monitoring dashboard, even though most times it is less than 10%. Since traffic to my ...
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2answers
87 views

50% Load on 2 CPU is the same that 100% Load on One CPU?

Very basic doubt: I have an application running on a VM with 2 vCPU. The average load is a bit less than 50% on both CPUs. Does that means that 1 CPU will be enough for my application? Or more CPUs ...
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1answer
226 views

Does AWS charge for CPU Usage? [closed]

I am considering getting t3.medium Type EC2 run Web Server (Apache, PHP, MySQL) and it also make a lot of use of data processing (PHP script running in the background making a lot of use between MySQL ...
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1answer
15 views

Requirements analysis for CPU-bound task writing to disk

I have a data-analysis application which is CPU-bound, and produces ~35 MB/s of data per thread of execution. I'm trying to work out how many threads I can run concurrently, and be able to write to ...
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3answers
21k views

Kill process with high CPU usage after X time? [closed]

Running Linux I have a few processes which tend to crash occasionally (game servers), which end up using 100% cpu. I'm looking for a program or script to check the cpu usage of a list of processes by ...
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5answers
54k views

MySQL process goes over 100% of CPU usage

I'm experiencing some problems with my LAMP server. Recently everything became very slow, even though visitor count on my websites didn't change to much. When I run top command, it says that MySQL ...
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1answer
300 views

How to restart linux services if it reaches 100% CPU? [closed]

I have postfix email server with saslauthd. Time and again saslauthd daemon eats 100% CPU. Restarting these services returns to normal cpu usage. Is there any proper script to determine services with ...
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1answer
15 views

How can I predict whether or not memory will bottleneck a CPU

My question is general, though I have a specific example. My question is this: How can I predict whether a powerful CPU will be fully exploited in a scenario with memory that is (relatively) low? My ...
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4answers
77k views

What does 'nice' mean on CPU utilization graphs?

On Ubuntu server load graphs I see 4 types of CPU consumption: User, System, Nice and Idle. What does Nice type mean?
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1answer
418 views

CPU utilization imbalance on ESXi 6.7

We are working with a server running ESXi 6.7 Enterprise Plus, and the mobo has 2 Xeon 10-core CPU's. The host is moderately loaded, but strangely the ESXi monitoring screen shows MAX socket (package)...
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1answer
25 views

Server CPU way up, nothing peculiar

I'm having a strange morning where the CPU usage on my server is running way up. Like 35-50%. htop shows nothing running like that, but PHP processes once in a while spiking. I can't seem to figure ...
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1answer
67 views

Root user consume huge amount of CPU [duplicate]

I can't understand why root user take huge CPU load, since there is no special processes running. top -c
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2answers
2k views

Ubuntu 11.04 server hanging due to landscape-sysinfo CPU overconsumption

I'm running something of a bare-bones server (based on Ubuntu 11.04) on an Amazon EC2 micro instance, whose purpose is simply to coordinate the activities of a few webservers. The machine ran well for ...
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1answer
45 views

Does it make sense to monitor free memory and CPU usage on servers?

I am monitoring my servers infrastructure using Icinga2 with some master/satellite configurations. On Linux and Windows hosts I am monitoring the defaults system metrics like CPU usage and free ...
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3answers
7k views

Microsoft Azure AD Connect Health Agent for sync 3.0.164.0 high CPU usage

We're experiencing 100% CPU usage from the process Microsoft.Identity.Health.AadSync.MonitoringAgent.Startup on our Domain Controllers that have Azure AD Connect installed, since yesterday. According ...
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0answers
83 views

How can I root-cause linux docker container CFS throttling?

I am running a docker container with a CFS configuration of 100000us period and quota of 450000us My understanding is that this means that for 100000us accounting periods, if the CPU consumption ...
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0answers
96 views

High CPU blocking performance on SSH tunnel with PHP-FPM

I've a Debian 9 VPS set up with Apache and PHP-FPM. It connects to another VPS to access a common database server VPS via an SSH tunnel. Mostly this works fine. Running a test for broken links ...
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0answers
131 views

CPU usage of a host in mininet

I have a network in mininet which includes a switch and 2 hosts. Now I want to find out the CPU/memory usage of a single host in this scenario. Is it possible? Is there any tool or any way to do this?
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2answers
193 views

Server crashing everyday around the same time. MYSQL related? [closed]

We have a dedicated server with a few applications running including a Vbulletin forum and Wordpress site. The main resource intensive application is a PHP chat application that utilizes MYSQL also. ...
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1answer
1k views

qemu-system-x86 consumes about 25% cpu on host while guest is in idle state

I run two kvm guests on my host, with the same config. One of them is a ubuntu 17.10, the other is a debian 9.2. Both are running on linux kernel 4.13 (debian is installed from the backports repo) On ...
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1answer
177 views

AWS Instance with 30 GB RAM, still running out of Memory and High CPU usage with small app

EDIT (15th June 2018) - I have resolved the issue. It was Postgres where some queries were taking more than 15 seconds. Most of the queries were for the same type of pages so I just removed that. This ...
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0answers
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Lots of ENOENT (no such file or directory) errors in my php-fpm: pool www processes, resulting in 100% processor usage

I am running a Magento 2.2.4 installation on php 7 and apache2. I have asked this on the Magento stackexchange as well but someoone suggested it might not be a magento-specific problem. Sometimes ...
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1answer
245 views

apache2 mod-php cpu 100% on process

I have a VPS Debian server with Apache 2.4.10 mod-php. Server starts normally, but after some time I get 100% cpu on one of www-data processes and a web-server becomes unavailable. I tried strace on ...
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1answer
101 views

www-data run un-named process [duplicate]

I have run a server with 2vcpu and 4 GB of ram. my software setup is apache2+php7.0+drupal-7. I'm facing 100% CPU utilization due to the un-named process called [] and is owned by www-data. (...