Bug 1779821
| Summary: | sap-hana tuned profile needs to change for RHEL8 to take advantage of scheduler changes | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | djdumas | |
| Component: | tuned | Assignee: | Jaroslav Škarvada <jskarvad> | |
| Status: | CLOSED ERRATA | QA Contact: | Robin Hack <rhack> | |
| Severity: | high | Docs Contact: | ||
| Priority: | unspecified | |||
| Version: | 8.2 | CC: | cpelland, djdumas, dshaks, fdanapfe, hannsj_uhl, jeder, jskarvad, olysonek, psklenar, rhack, toneata, wchadwic | |
| Target Milestone: | rc | Keywords: | Patch, ZStream | |
| Target Release: | 8.0 | |||
| Hardware: | Unspecified | |||
| OS: | Unspecified | |||
| Whiteboard: | ||||
| Fixed In Version: | tuned-2.13.0-1.el8 | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 1780679 1780682 (view as bug list) | Environment: | ||
| Last Closed: | 2020-04-28 16:59:38 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: | ||||
| Bug Blocks: | 1780679, 1780682 | |||
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Description
djdumas
2019-12-04 19:27:03 UTC
This is a RHEL8.2 blocker request as it is gating an SAP cert. The testing for this is also being requested for the low_latency tuned in 8.2 Its been tested very well on by both SAP workloads and with the Perf team / kernel QE perf team. Hi Jaroslav, There are a few other settings that we do need to carry over from throughput-performance profile into the new sap-hana profile. The [cpu] settings are necessary from a performance perspective. The vm. parameters have been set for all the tests that we have done so would like to include them as well. [cpu] governor=performance energy_perf_bias=performance min_perf_pct=100 [sysctl] vm.dirty_ratio = 40 vm.dirty_background_ratio = 10 vm.swappiness=10 Thanks! Dave (In reply to djdumas from comment #7) > Hi Jaroslav, > > There are a few other settings that we do need to carry over from > throughput-performance profile into the new sap-hana profile. The [cpu] > settings are necessary from a performance perspective. > The vm. parameters have been set for all the tests that we have done so > would like to include them as well. > > > [cpu] > governor=performance > energy_perf_bias=performance > min_perf_pct=100 > > [sysctl] > vm.dirty_ratio = 40 > vm.dirty_background_ratio = 10 > vm.swappiness=10 > > > Thanks! > Dave Hi Dave, please check the PR from the comment 5 (direct link: https://github.com/redhat-performance/tuned/pull/231/commits/52156a00b590ef401b38dcc65720b344d67e86f6) whether it's OK for you. It's the single tuning for all architectures. It's simple profile, so I directly copied the settings from the throughput-performance profile to the sap-hana not to complicate things, but if the following works better for you, I could change it, e.g.: - set readahead explicitly to the 128kB (now it's left on its defaults) - keep throughput-performance included, and just override what's needed in sap-hana Jaroslav (In reply to Jaroslav Škarvada from comment #8) > > Hi Dave, > > please check the PR from the comment 5 (direct link: > https://github.com/redhat-performance/tuned/pull/231/commits/ > 52156a00b590ef401b38dcc65720b344d67e86f6) whether it's OK for you. It's the > single tuning for all architectures. Hi Jaroslav, Yes, this is exactly what we were looking for - sorry I didn't even notice that in the bugzilla until you pointed it out. Thanks! 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-2020:1883 |