Bug 1289042
| Summary: | system monitor does not show CPU load values correctly | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Martin Krajnak <mkrajnak> | ||||
| Component: | gnome-system-monitor | Assignee: | David King <dking> | ||||
| Status: | CLOSED NOTABUG | QA Contact: | Desktop QE <desktop-qa-list> | ||||
| Severity: | high | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 7.2 | CC: | tpelka | ||||
| Target Milestone: | rc | ||||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2015-12-07 12:43:44 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
|
||||||
This is expected, and because gnome-system monitor is showing the CPU load averaged over the number of cores, whereas htop is showing the load in terms of a single core.
There is an option to configure this behaviour in the gnome-system-monitor prefences ("Divide CPU usage by CPU count") which can be changed by the user.
Good, i misunderstood the following TCMS test case https://tcms.engineering.redhat.com/case/422330/?from_plan=15435 which was saying that values in htop and gnome-disk-utility "could be slightly different", I will update the case so we can prevent misunderstanding in future. |
Created attachment 1103134 [details] screenshot.jpg Description of problem: In attached image you can see that processes with PID 9866,9867 have 100% CPU load in htop, but in gnome-system-utility same processes have only 25% and 24% CPU load. Version-Release number of selected component (if applicable): gnome-system-monitor-3.14.1-3.el7.x86_64 kernel-3.10.0-327.el7.x86_64 How reproducible: always Steps to Reproduce: 1.run htop 2.run gnome-system-monitor 3.run stress --cpu 2 --timeout 60 4.compare cpu load values in both tools Actual results: values are different, gnome-system-monitor shows about one quarter from htop values Expected results: values should correspond