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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Load average greater than number of CPUs
Why load average is greater than number of cores CPUs? But, htop command is not showing which process are using so much CPU load average.
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Downtime on an EC2 instance
Recently I had an issue on an EC2 instance. The site running there was unavailable for 2 hours:
CPU utilization for the past week:
The rest are around the time it happened:
The systemd journal ...
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How to check what triggered high CPU usage on past days, on Digital Ocean?
I want to investigate what caused a high cpu usage for several hours on 1/16. Digital Ocean graph shows a prolonged high cpu usage in the course of about 12 hours. Is there a log somewhere that I can ...
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How to calculate CPU utilization for an application in a multicore system
On 8-core server, 0-3 are configured as isolcpus and remaining cores (4-7) are available for system and user processes to run. My application has multiple processes which will run on any one of the ...
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CPU Limiting & kswapd0 Advice Saught
Through hours of testing, I have found that the nextcloud desktop sync client for ubuntu 20.04 (appimage or ppa) both seem to have a bug to where... if a common nextcloud file sync error occurs , ...
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Does increasing cpu affect load average?
for example I have a 16 core cpu with load average 10. If I upgrade cpu to 32 core and if ( same traffic , same load , same everything ) , should load average drop or will it stay the same ?
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Lots of suspicious GET requests that overload my CPU
I have a DigitalOcean droplet that hosts a small website with pretty much no traffic. Yesterday, I received an alert that my CPU was over 95%. Normally it runs between 1% to 5%. In the "bandwidth&...
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High cpu temperature and temperature difference
On a cluster I am working on there is a node which is showing high CPU temperature.
The node has 2 Intel(R) Xeon(R) CPU E5-2680 v4 @ 2.40GHz.
The sensors command from lm-sensors is showing that one ...
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100% CPU usage reported, but no processes using the CPU
I am running Debian 10 (kernel 4.19.0-18-amd64) on bare metal and I have recently noticed strange CPU usage.
Screenshot of htop, sorted by CPU%
Screenshot of top, sorted by CPU%
As you can see, 100% ...
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Spikes on softirqs RCU monitored with NetData on proxmox container
I have a server with the following characteristics: https://www.soyoustart.com/it/offerte/1801sysgame05.xml
Processor
Intel i7-4790K
RAM
32GB DDR3 1333MHz
Traffic
Unlimited
Anti-DDoS
Included
Disks
...
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Multiple core overload on Ubuntu
I have a really strange behavior of the server. I run Apache, MySQL, WordPress on it. And recently, it has had a lot of freezes. MySQL/Apache shows high CPU usage (out of 24 cores - 2400% cpu% ...
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Is 'Max Cpu' at 100% normal?
Below are two images from our Azure 'App Service Plan', which hosts our application. We recently tried scaling up, but it did not solve the issue seen below.
Our 'Max CPU' peaks throughout the day, ...
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2
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High CPU usage by Apache/MySQL
I have a problem with CPU usage on the website that uses WordPress, Apache, and MySQL. During the day, from time to time, CPU usage by MySQL and Apache goes up to 2400% (I have 24 cores in total), the ...
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Cloud setup for occasional high to extreme CPU-intensive tasks (instant vertical scaling?)
I have a business workload that has very low CPU-usage most of the time, and occasionally needs to burst to very high CPU-usage. It currently runs on a dedicated server with 32 cores, but was hoping ...
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Is there a program to diagnose and summarize why my mchine is slow? [closed]
Is there a program that will tell me why my server is slow? What is being over utilized? CPU / Memory / Disk / Network ... and what processes are driving that utilization? I want a program that can ...
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Benchmark script performance against CPU/RAM consumption for different parameters
I have an image processing shell script that can be provided with different sets of parameters that all produce a valid output for me. I'm trying to identity the set of parameters that has the lowest ...
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Can I have multiple threads running in parallel in a pod with a CPU limit set to 500 millicores?
I have a multi cores Kubernetes cluster, inside it I have multiple pods configured with a CPU limit of 500 millicores:
resources:
limits:
cpu: "500m"
It is ...
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EC2: Relatively small network out spikes cause 100% CPU usage
Background
Hello,
I have a server I'm running on a free EC2 instance. I'm using nginx and passenger/rails as my web server and application server.
The server receives little traffic (still in ...
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sbin: root@policykit -1/9 high CPU [duplicate]
The process "sbin: root@policykit -1/9" takes high CPU in our Ubuntu 18.04.4 LTS server.
Can anyone help to find what it is?
Thank You.screenshot
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Why one of the cores is running full on (100%) during development? [closed]
I'm developing an app (Python) which uses face recognition and OpenCV libraries.
I can see even after the app finished processing one of the cores keeps running full on
for another 10 mins or so.
...
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1
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Proof CPU maximum frequency in VM
CPU-Z on some customers VM for DB server is constantly showing 2,8 GHz CPU frequency. While with TurboBoost enabled it could be 3,6 GHz by the Intel documentation.
VM administrator is telling me, that ...
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Assigning CPU and MEM usage variables in PBS/TORQUE
I asked this question at meta.stackoverflow.com; they said it was the wrong forum
I am using the FALCON assembler (for genomes by PacBio; https://github.com/PacificBiosciences/pb-assembly) and it's ...
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Hyper-v VM high CPU usage in Windows Server by task manager?
Windows 2012 std host with Hyper-V. Hyper-V guest VM is Windows server 2019 std
Both the host and the VM are setup as separate SQL & IIS application platforms with some light add-on tools such as ...
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Laravel/PHP process on debian 10 only ever using one of two CPU threads
I am running a Debian 10 Buster server on a google VM with PHP 7.3 Apache2 and MySQL 8. On the server, I am running Laravel 8 as an API for two clients. I recently upgraded the VM to an n2-standard-2 (...
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Why atop shows high CPU but sum of individual processes %CPU far smaller?
How can the sum of processes' CPU-% usage be lower than the total CPU load, according to atop and top, please?
I have a CPU reaching very high load (87%, for several hours) even though the sum of the ...
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High CPU Usage on Digital Ocean Web Server
We have a Laravel website which is currently hosted on Digital Ocean (Nginx). The droplet is a 2 vCPUs, 2 GB Memory, 60 GB SSD, 3 TB transfer running PHP 7.4. We are seeing a steady increase in CPU ...
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1
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PHP-FPM using 100% CPU on a server that has 16 threads
I have a server that has 32 GB of RAM and 16 threads. This server has an API in PHP that receives many requests from other external APIs, I made a configuration in PHP-FPM to support all these ...
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High average load + low cpu usage + low disk usage + normal network usage + normal memory usage = ok or not?
I see high CPU average load several times a day on my server. For example, 21:20 and 22:45 on the following figure:
However, my CPU, disk, and network are all OK:
Disk
Network
CPU
Memory
Also do ...
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Samba and luks encrypted disk together: Huge performance loss despite plenty of CPU resources, LUKS and samba alone works as expected
Setup:
SSD encrypted with luks aes-xts 512 bits (256 bits AES key), ext4 filesystem
dd write performance of 138 MB/s, CPU usage 97-100 %
dd if=/dev/zero of=testfile status=progress bs=32M count=128
...
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Increased CPU interrupts, degraded performance on upgrade to Symfony flex
We're upgrading our Symfony 3.4 app (LAMP w/ opcache/php-fpm) to flex (as per https://symfony.com/doc/current/setup/flex.html). In load testing, we're seeing increased CPU usage, particularly system ...
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Get CPU load percentage on Windows 2008r2 Server - WMIC doesn't work?
I found the command wmic cpu get LoadPercentage was recommended as a way to get a CPU load estimate from a command line.
It works as expected from a Windows 10 system:
c:\>wmic cpu get ...
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Amazon EC2 instance unexpectedly using CPU and network (not http). How to analyse?
I would like to try and better understand how to analyse the following situation (which is no longer occurring)
CPU pinned at 50% all night (100% of 1 core I suppose) according to Cloudwatch.
...
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KVM with 1 vCPU has CPU load above 1
I have a KVM running with 1 vCPU on a machine with 4 cores.
lscpu in the KVM gives me 1 CPU with 1 core :
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte ...
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High usage IRQ/CPU on Centos 8 router BGP
PRC | sys 0.34s | user 0.10s | | #proc 124 | #trun 2 | #tslpi 93 | | #tslpu 0 | #zombie 0 | clones 0 | | #exit 0 |
CPU | sys ...
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My Google Cloud Compute Engine Wordpress based website keeps askiing for more cpus and more memory - GBs of it
I have a website that has had about the same traffic all year, yet on the GC Compute Engine page it keeps asking for more and more resources. Right now it has
n1-highmem-16 (16 vCPUs, 104 GB memory)
...
google-cloud-platform
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1
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Web server CPU Utilization slowly increasing with LAMP stack?
I made a ton of changes to my website this year and noticed that my CPU Utilization has been gradually increasing for a couple of months (it slowly went from around 0% to 60% in about 2 months). After ...
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Windows 10 VM pegs CPU at 100%
We have a Windows 10 VM with one vCPU and 8 gigs of RAM. It runs an HVAC design software that various users can RDP in and use. We've noticed that sometimes, the CPU will (seemingly randomly) max at ...
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How do I pin point which processes consuming the CPU from resource monitor?
I need help on pin pointing which processes actually utilizing the most CPU on my server.
I had a Win2008 server which are hosting several applications. From time to time the CPU will spike to 100%, ...
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Why does svchost.exe gradually consume more and more CPU on a Server 2016 Domain Controller?
We have a physical server that is running Windows Server 2016 and is acting as a domain controller. We are monitoring several services/parameters on this server via Nagios/Check MK and are noticing ...
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Tightvnc Server using only 1 core?
I have a server setup with 8 cores and 32gb of RAM. I am using it to launch as many java applications as I can and hope to make the most efficient use of my resources. Upon launching I notice the ...
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Uneven processor usage on a Multi core Postgre SQL server
We have a dedicated server running Postgres 12 database with this configuration:
Model: HPE ProLiant DL580 Gen9
CPUs: 4*Intel(R) Xeon(R) CPU E7-4850 v3 @ 2.20GHz
Ram: 128 GB
Ubuntu 18.04.4 LTS
...
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How to load one physical CPU in a system with virtual cores?
I have an AMD processor with 4 physical cores and SMT enabled. Because of the latter, I see 8 virtual cores in a Linux box.
For example, stress command can spawn a number of workers spinning on sqrt()....
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How to interpret CPU utilisation on KVM guest / host
I have a host Ubuntu 18.04 64-bit os running on a 24-core Xeon system. I've allocated 2 vCPUs to the guest which is Ubuntu 18.04 32-bit, and it's running an application which normally requires a small ...
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ZFS: arc_prune is using 100% CPU with high load average
I have a 4 disk storage server with two ZFS raidz1 pools, and suddenly last night it started running at 100% CPU with an high load average:
root@stg1:~# w
07:05:48 up 296 days, 17:19, 1 user, load ...
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Confusion with cpu states in /proc/stat
I wrote a program (monitoring plugin) that reads the cpu usage numbers from /proc/stat.
Unfortunately it seems the numbers do not match the manual page proc(5), especially I get different proportions ...
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How to find out the mySQL query which uses most of the CPU using performance_sc
52893 TID is using 100% CPU in my server
How to find the query corresponds to that TID? For me, this table is empty
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sar and top show high cpu usage, but vmstat and ps show low cpu usage. Why?
I'm diagnosing a high CPU usage event, and I found a weird difference between numbers from ps/vmstat, which show almost 0%, and sar/top, which show almost 100% (user + system):
sar 1 5
Linux 2.6.9-67....
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Is it possible to have user time > wall time? [closed]
I have obtained the following results from executing a script:
real 0m1.027s
user 0m1.752s
I understand that:
Real time is the wall time. This is the time I would have obtained if I have measured ...
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CPU load for high performance computing
Is there a reasonable/safe level of CPU load in the context of high performance computing?
I understand the meaning of load average for servers in general, but do not know what to expect for servers ...
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SpectreV1 Mitigation Performance profiling
I am trying to measure the system performance when spectreV1 mitigation is on. I am using stress-ng for that. So far I have tested the system with various stressors like cpu, qsort, str, matrix, ...
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