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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CPU C-states disabling ruins network performance

With intel_idle.max_cstate=1: root@debian:~# curl -o /dev/null http://xx.xx.38.35:999/speedtest/1000mb % Total % Received % Xferd Average Speed Time Time Time Current ...
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What can be a reason for different clock speeds between sockets on 2 x Xeon Scalable 6148?

I have server with dual Xeon Scalable 6148 CPUs running HPC application. Base clock: 2.4GHz All core Turbo: 3.1 GHz Some processing threads are not scaling well and are sensitive to cpu clock. I ...
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CPU load percentage for individual processors

I am using following WMI query to get the CPU load percent data. Select * from win32_processor and below instance results are captured. Win32_processor WMI query results By above data it’s ...
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Monitoring CPU per Process Utility using zabbix agent

I'm new to zabbix and I'm trying to create custom User Parameter to Monitor CPU utility per process(Windows Machine). I have a powershell script and a user parameter, I also added a new item under ...
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Does 6 cores ryzen 5 3600 x or 8 cores ryzen 7 3800x or intel i7 6700k or ryzen 9 3950x used for website/Nas enterprise based server

I was thinking to set up a server for my tracking system or inventory management system. and I would like to know is 6 cores or 4 cores enough for the bare minimum or should i get 8 cores or the 16 ...
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How to bind static affinity for *all* Linux processes at startup?

I have one single-threaded process on server that I'd like to statically bind to one CPU core and give it all available computing power all the time (it's real-time process that is heavily affected by ...
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382 views

How can I monitor CPU usage and processes on Windows Server 2012 as a service over a 24 hour period?

We have a long running performant operation that runs for 6 hours. When it was last ran, something happened for 5 minutes where its performance dropped dramatically and caused a few timeouts, in the ...
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unusual high cpu usage by php-cgi and mysql

Since several days ago I've been seeing unusual high CPU usage of my VPS, it jumped from avg 2% to 80%+, along with high outbound traffic and low inbound traffic and very high Disk I/O as well. With ...
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High CPU Load and High I/O wait time : Mysql process

i am fairly new to the role and the technology. we have a Network server that receives the telemetry data from sensors and temeletry data is stored in MYSQL dabatase. we have a front end portal which ...
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726 views

MySQL high CPU usage after changing server IP address

Having a very odd problem. MySQL has been installed on a clean brand new Windows Server 2019. It is MySQL 5.7.29. We also have an old server that is running MySQL as well. If I change the new/clean ...
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Is 6% CPU & >180 MB RAM usage normal for exim4 on Debian 10?

I just (attempted to) set up exim4 on Debian 10. Is the above normal for exim4 running under root when I run sudo systemctl restart exim4.service? Seems a bit high for an MTA. I have root: ...
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Processing required to write multiple images every second [duplicate]

I am developing an application in Ubuntu which needs to read a video and save the frames as jpg(1920x1080) images - around 30 frames per second. How much processing does writing images take up and how ...
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MariaDB high CPU usage even when idle

My MariaDB server is constantly using at least 30-40% CPU even when idle and no queries are being run. What could possibly cause such a behavior? What should I check? MariaDB Version: 10.3.22 ...
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19" rackmount server fan noise with 3.3 GHz vs 2.4 GHz CPU

I made a research while looking for a low fan-noise rackmount server. I visited a datacenter and observed that Fujitsu Primergy RX series had much lower fan noise than HP ProLiant or Dell PowerEdge. ...
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Do CPU credits exist for c5d.large instances? And if not, why not?

I've been paranoid that the websocket feed I was listening to on a t3.micro instance was being inhibited by cpu steal time from other instances under the same hypervisor. So I switched over to a c5d....
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Strange Azure VM performance Issues

We have 5 VMs on Azure for a customer. All VMs have been running smoothly. Now since Monday the VM of one of the users is losing performance every day at 4 PM UTC+1 (+-1h). When we have these ...
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Torque - get number of CPUs allocated to running jobs

I'm looking for an option to format Torque qstat output so that I get only the number of allocated to running jobs. Here's how I do it in Slurm: squeue -h -j 12345 -t RUNNING -o "%C" where -h - no ...
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CPU - 16 threads stuck at 100% [resolved]

I use centos 8, mariadb 10.5, php 7.4 enter image description here As you can see 16 threads are at 100% stucked there this very unsual normally my cpu are at 10-25% as constant. here is a top ...
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EC2 CPU utilization hits 100% everytime in a machine where a drupal site is installed

I have my production drupal website running on EC2. Recently we noticed that our EC2 CPU utilization is hitting 100%. I checked my site traffic, not much users are there. I checked the process running ...
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hot added vCPU for linux not used fully in top command

just recently we started to see high CPU pressure on one of our machines. All our machines are running Linux Debian and we use vmware under the hood. We have hot added new CPUs and they're online in ...
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304 views

QEmu and limit CPU clock vor VM

My question is simple. With the help of virt-manager, can I limit what speed should the VM see and use the CPU at? The goal is to test a web application if it runs better on more cores, lower speed ...
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1answer
55 views

One process takes all server resources (iowait?)

I have multiple processes running simultaneously on the same box under CentOS 7 (each one on behalf of the separate Linux user). I use Zabbix for monitoring. Sometimes the following pattern ...
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1answer
266 views

Server suddenly has high softirq cpu use after reboot

A 48 GB RAM virtual server maintaining about 25k TCP connections (devices in the field logging in to set up an SSH tunnel) ran out of RAM and started swapping, and getting slow, etc. We upgraded and ...
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non voluntary context switches when the system is not loaded

I have a packet processing application which runs in linux. the packet processing thread is steady at around 20% cpu. My problem is that once in a while I lose a few packets. I looked at /proc/-tid-/...
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330 views

Ubuntu VPS CPUs sometimes go wild with a process I don't recognize [duplicate]

My VPS sometimes goes wild because of /tmp/.X17-unix/.rsync/c/lib/64/tsm --library-path /tmp/.X17-unix/.rsync/c/lib/64/ /tmp/.X17-unix/.rsync/c/tsm64 -t 302 -f 1 -s 8 -S 8 -p 0 -d 1 Any idea ...
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Advise on how to best archive lots of files form server to S3 glacier

I would like to better understand best approach to this problem and any gotchas that I might be overlooking in terms of CPU/Mem/Network/IO load on Server A: Server A = customer facing production ...
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Improving high IOWait and high load-averages on a “Tube” site

I manage a small'ish tube site with some paid videos for engineering folks. I have noticed that my CPU IOWait and Load Averages are quite high most of the time. I understand that it is normal for ...
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2answers
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Significantly downgrading a server processor in light of extremely idle CPU?

I'm considering migrating my database to a new server. The new server has a much less performant CPU, but more RAM and a faster SSD. Also, it is half the monthly price. Based on available CPU ...
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3answers
349 views

MySQL 500% CPU Usage and Crashes Server

My dedicated server is a XEON E3 1240 V3 8GB DDR3 1TB HDD SATA (4 cores @ 3.4 GHz), which I've had for a couple of days only and just finished migrating about 20 wordpress sites to it (each database ...
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Ubuntu/Centos Application Total Resource Measurement Usage Summary Report for CPU, Memory, IO

When I develop an application and want to optimize it I need a feedback about the resources it used in total to perform a task. I use currently top and just look at the percentage of for example CPU ...
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1answer
58 views

How to measure GB-seconds for AWS EC2

We are researching on the possibilities of moving our app from EC2 based implementation to AWS lambda. We are trying to project how much money we will be saving if we do so. The lambda pricing says it ...
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466 views

How to visualize current CPU usage of a pod with Grafana

Is there a way to visualize current CPU usage of a pod in a K8S cluster? I tried different Prometheus metrics like namespace_pod_name_container_name:container_cpu_usage_seconds_total:sum_rate and ...
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Need to make sense of my Azure charges and correlate to actual user activity

How do I correlate all of the metrics I get from Azure to actual user activity? Its easy to understand x cost for x storage, but there are 100 line items on my usage report with obscure names and ...
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2answers
1k views

Hyper-V virtual machines high CPU usage

On Windows 10 (1903) I have installed Hyper-V host. On that host I have some Windows 10 (1903) machines. Everything fresh installed. The machines does not yet have any heavy services set up (mostly ...
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Are cpu quotas on cgroups hard limits or not?

When setting cgroups are they guaranteed to be enforced? I am seeing that a process that belongs to to a specific cgroup that has quota of 52 shares (hence 5% utilization) when I run top it is ...
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mariadb main thread over 100% cpu and flushing logs

I have 5.5.60-MariaDB and noticed the main thread remains on sleep mode for the last 200hrs. After checking innodb status I see the below line for this thread. Main thread process no. 119014, id ...
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281 views

Linux: Identify process causing high *system* cpu usage

All the tools seem to either 1) show user/system usage details once you provide them a process id 2) show the stats only for the entire system without any detail per process. I've checked top, dstat, ...
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1answer
671 views

Azure App Service plan stuck at 100% CPU

Our Azure App Service Plan has been stuck at 100% for a few hours now. I've tried restarting the App Services on it, but to no avail. I think I need the whole VM hosting the App Service Plan behind ...
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257 views

Mysql 100% CPU without active processes [closed]

I'm configuring a CentOS7 VPS with 4 vCore and 24gb of RAM, I'm using it to host 2 Wordpress sites. There are 2 small dbs, in total about 400MB. The sites in production will have about 10k visits ...
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1answer
544 views

What is the relation between IO wait utilisation and load average

Load average uses processes that are running or runnable or in uninterrupted sleep state. So do the processes in uninterrupted sleep state correspond with the %wa as per the top command? Both are ...
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1answer
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Local x Server processing time (only CPU)

I'm having some HUGE differences on running time when comparing local x server processes. Our laboratory has a dedicated server running Ubuntu 14 LTS as OS and PBS for Job scheduling. In total, there ...
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1answer
92 views

server with high CPU and memory usage

I have a server with one WordPress website on it, but the resources of the server is almost finished. please check the image: Where should i start to figure out the problem? should i get a server ...
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Difference between Task Manager's Processes and Details tabs

In Windows' Task Manager we have 2 tabs that show process CPU usage: Processes and Details. Trying to find a hotspot in my developed software, I noticed that CPU usage differs there in a huge manner - ...
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1answer
151 views

How to get MySQL resource usage per user

I want to know is there anyway to get CPU usage per user in MySQL? for example I have 3 different users 'user1', 'user2' and 'user3'. I want to get the average/real time memory usage and CPU usage of ...
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1answer
281 views

Amazon Aurora read-only slaves slowly increase to 100% CPU and die

We have a master database instance hosted on AWS Aurora (mysql) and have many read-only slaves being replicated from it. The master and the 4-12 autoscaling slaves are currently of db.r4.4xlarge size ...
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1answer
254 views

nginx workers stack at 100% usage after X random days

I am facing a strange incident, under which my two nginx workers suddenly get stack at 100% of CPU usage after a random number of days and at the same web traffic, under which they are behaving fine ...
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2answers
556 views

Get CPU utilization in frequency for a specific proccess in Linux

I want to get the realtime CPU frequency which is using by a process in Linux. I think I should use top command. But I want to know the '%CPU' column in top is the percent of CPU usage for a process ...
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114 views

How to tune linux machine in order to improve CPU load average and CPU utilization

We are working with huge hadoop cluster. We have 736 datanode machines and each node have 16 core X 2 thread. On some machines we saw CPU load average (98-128 for 5 min). After deeply ...
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1answer
254 views

how do i find a memory leak in Linux?

I have a digital ocean droplet. recently i combined it with another, and now the system will randomly (every couple days) completely max out on CPU usage (for a single user, not for the system) and it ...
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1answer
1k views

High CPU usage by WMIPRVSE.EXE process at regular intervals in Windows

I noted eventually at production server with almost 200.000 handle and wmiprvse.exe process with high cpu usage. The server has approximately 200 processes running on Windows server 2012-R2 (...

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