Bug 1016729 - Apply IB performance patches to 3.8 realtime kernel
Summary: Apply IB performance patches to 3.8 realtime kernel
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise MRG
Classification: Red Hat
Component: realtime-kernel
Version: 2.4
Hardware: x86_64
OS: Linux
unspecified
high
Target Milestone: 2.4.3
: ---
Assignee: John Kacur
QA Contact: MRG Quality Engineering
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2013-10-08 15:14 UTC by Clark Williams
Modified: 2018-12-04 16:00 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Cause: Various aspects of cache on Infiband, sometimes due to upstream infrastructure changes resulted in potentially bad performance. Consequence: Poor cache performance on InfiniBand Fix: 1. Only cache valid GIDs and not empty ones to reduce search time. 2. When searching GIDs on a list of devices, first start with the device that received the request. 3. Change cma_acquire_dev function to search for cached GIDs. Result: Improved IB performance, potentially pathological (for throughput performance) code paths removed.
Clone Of:
Environment:
Last Closed: 2014-01-28 17:39:44 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Bugzilla 1016724 0 unspecified CLOSED infiniband - performance regression fixes 2021-02-22 00:41:40 UTC
Red Hat Product Errata RHSA-2014:0100 0 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2014-01-28 22:38:58 UTC

Description Clark Williams 2013-10-08 15:14:38 UTC 
Apply IB performance patch set from tracker bug to the 3.8 realtime kernel.
Comment 7 errata-xmlrpc 2014-01-28 17:39:44 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.

http://rhn.redhat.com/errata/RHSA-2014-0100.html
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