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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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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) and is asking to increase to 20 vCPUs and 160 GBs…
Lou Wallace
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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 100%. When this happens, it becomes impossible to…
CacheMoney
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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%, when I check from the resource monitor I find that…
Jason Oon
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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 that Nagios is reporting svchost.exe is gradually…
CacheMoney
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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 server begins lagging fairly badly and Xtightvnc is…
Plee
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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 Postgre SQL 12 The problem is that the CPU usage never…
user2085899
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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(). If I run stress with -c 1 option, using mpstat…
mate200
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changing cpu frequency dynamically depending on workload for power management

I have the cpu-usage profile of some standard benchmarks in which I can see the cpu-usage to be varying a lot . I wish to increase the cpu-frequency to the highest available value , exactly at the instants the cpu starts executing compute-intensive…
kashyapa
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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.ELsmp (uxdfl712) 07/25/2020 01:48:31 PM …
Emerson Prado
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Is it possible to have user time > wall time?

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 with a stopwatch from the start until the end of…
franncapurro
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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, tsearch, lsearch, sem, switch and mq. I am looking at…
awatan
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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 was playing little with setting affinity and…
terion
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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 insufficient resources). Unfortunately machine…
Lapsio
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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 servers IP address to the old servers (the old is…
Lenard Bartha
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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: MyUsername set in /etc/aliases, changed…
jdrch
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