Bug 1500894
Summary: | sched/rt: Simplify the IPI rt balancing logic | ||
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Product: | Red Hat Enterprise Linux 7 | Reporter: | Clark Williams <williams> |
Component: | kernel-rt | Assignee: | Clark Williams <williams> |
kernel-rt sub component: | Memory Management | QA Contact: | Jiri Kastner <jkastner> |
Status: | CLOSED ERRATA | Docs Contact: | |
Severity: | medium | ||
Priority: | high | CC: | bhu, lgoncalv |
Version: | 7.5 | ||
Target Milestone: | rc | ||
Target Release: | --- | ||
Hardware: | x86_64 | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | No Doc Update | |
Doc Text: |
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Story Points: | --- |
Clone Of: | Environment: | ||
Last Closed: | 2018-04-10 08:55:02 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: | 1442258 | ||
Attachments: |
Description
Clark Williams
2017-10-11 16:58:03 UTC
These patches improve latencies seen on systems with more than two sockets. Created attachment 1341423 [details]
[PATCH 1/3] Revert "sched/rt: Avoid sending an IPI to a CPU already
First of two reverts to be able to apply new IPI RT balancing patch
Created attachment 1341424 [details]
[PATCH 2/3] Revert "sched/rt: Have the schedule IPI irq_work run in
Second of two reverts required to apply new IPI RT balancing patch
Created attachment 1341425 [details]
[PATCH 3/3] sched/rt: Simplify the IPI rt balancing logic
New IPI RT Balancing logic
The above patches (#c3, #c4 and #c5) were applied to: kernel-rt-3.10.0-742.rt56.671.el7 The the patches build and boot. 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/RHSA-2018:0676 |