Bug 1016729 - Apply IB performance patches to 3.8 realtime kernel
Apply IB performance patches to 3.8 realtime kernel
Product: Red Hat Enterprise MRG
Classification: Red Hat
Component: realtime-kernel (Show other bugs)
x86_64 Linux
unspecified Severity high
: 2.4.3
: ---
Assigned To: John Kacur
MRG Quality Engineering
Depends On:
  Show dependency treegraph
Reported: 2013-10-08 11:14 EDT by Clark Williams
Modified: 2014-01-28 12:39 EST (History)
6 users (show)

See Also:
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.
Story Points: ---
Clone Of:
Last Closed: 2014-01-28 12:39:44 EST
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)

External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Bugzilla 1016724 None None None Never

  None (edit)
Description Clark Williams 2013-10-08 11:14:38 EDT
Apply IB performance patch set from tracker bug to the 3.8 realtime kernel.
Comment 7 errata-xmlrpc 2014-01-28 12:39:44 EST
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.


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