Bug 1320334
| Summary: | Regression in Xorg CPU usage between 6.4 and 6.7 | ||||||
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| Product: | Red Hat Enterprise Linux 6 | Reporter: | Dave Johansen <davejohansen> | ||||
| Component: | xorg-x11-server | Assignee: | Adam Jackson <ajax> | ||||
| Status: | CLOSED WONTFIX | QA Contact: | Desktop QE <desktop-qa-list> | ||||
| Severity: | unspecified | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 6.7 | CC: | angelotech, arfernan, cww, jkoten, ofourdan, tlrader | ||||
| Target Milestone: | rc | ||||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2017-06-01 21:29:21 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: | |||||||
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We encountered this same issue on our new RHEL7.2 workstations; however, when we upgraded to the newer kernel 4; the problem went away. I have been experiencing same behavior with high cpu load on Xorg process resulting sluggish performance. I am using RHEL 6.7 kernel with xorg-x11-server-Xorg-1.15.0-36.el6.x86_64. I have noticed xorg/high cpu load issues with RHEL 6.7 firefox (45.1.0). I noticed various splash screens trigger this behavior. Once the offending FF tab or FF session is closed, then the Xorg settles down to acceptable low CPU load and regain the performance on the workstation. Red Hat Enterprise Linux 6 transitioned to the Production 3 Phase on May 10, 2017. During the Production 3 Phase, Critical impact Security Advisories (RHSAs) and selected Urgent Priority Bug Fix Advisories (RHBAs) may be released as they become available. The official life cycle policy can be reviewed here: http://redhat.com/rhel/lifecycle This issue does not appear to meet the inclusion criteria for the Production Phase 3 and will be marked as CLOSED/WONTFIX. If this remains a critical requirement, please contact Red Hat Customer Support to request a re-evaluation of the issue, citing a clear business justification. Red Hat Customer Support can be contacted via the Red Hat Customer Portal at the following URL: https://access.redhat.com |
Created attachment 1139236 [details] Run 35 xeyes instances to show the increased CPU usage of Xorg Description of problem: Xorg is taking significantly more CPU with 6.7 than it did with 6.4. Version-Release number of selected component (if applicable): xorg-x11-server-Xorg-1.15.0-36 How reproducible: Always Steps to Reproduce: 1. Run attached test_xorg script 2. Move mouse back and forth so that xeyes keeps moving and redrawing Actual results: CPU usage is 2-3x what is was with RHEL 6.4. Expected results: CPU usage should be the same for all RHEL 6.x releases. Additional info: This issue is affecting our applications and this is just a simple reproducer that I could come up with to demonstrate the issue.