Bug 1707505

Summary: hwlatdetect requires tuning to pass
Product: Red Hat Enterprise Linux 8 Reporter: Clark Williams <williams>
Component: rt-testsAssignee: John Kacur <jkacur>
Status: CLOSED ERRATA QA Contact: Qiao Zhao <qzhao>
Severity: high Docs Contact: Tomas Capek <tcapek>
Priority: unspecified    
Version: 8.1CC: atheurer, bhu, jkacur, krister, lcapitulino, lmanasko, mstowell, qzhao, rt-maint, williams
Target Milestone: rc   
Target Release: 8.0   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
.C-state transitions can now be disabled during `hwlatdetect` runs To achieve real-time performance, the `hwlatdetect` utility needs to be able to disable power saving in the CPU during test runs. This update allows `hwlatdetect` to turn off C-state transitions for the duration of the test run and `hwlatdetect` is now able to detect hardware latencies more accurately.
Story Points: ---
Clone Of: 1707113 Environment:
Last Closed: 2019-11-05 20:35:58 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:
Bug Depends On: 1707113    
Bug Blocks: 1696402    
Attachments:
Description Flags
disable/enable c-states during run
none
hwlatdetect code clean-up none

Comment 3 John Kacur 2019-05-10 14:52:45 UTC
Created attachment 1566703 [details]
disable/enable c-states during run

Comment 4 John Kacur 2019-05-10 14:53:19 UTC
Created attachment 1566704 [details]
hwlatdetect code clean-up

Comment 13 errata-xmlrpc 2019-11-05 20:35:58 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2019:3308