Bug 1016724 - infiniband - performance regression fixes
infiniband - performance regression fixes
Status: CLOSED WONTFIX
Product: Red Hat Enterprise MRG
Classification: Red Hat
Component: realtime-kernel (Show other bugs)
Development
x86_64 All
unspecified Severity high
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Assigned To: Red Hat Real Time Maintenance
MRG Quality Engineering
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2013-10-08 11:05 EDT by Clark Williams
Modified: 2015-04-01 17:24 EDT (History)
3 users (show)

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Doc Type: Bug Fix
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Last Closed: 2015-04-01 17:24:53 EDT
Type: Bug
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
IB/cma - use cached gids (6.21 KB, patch)
2013-10-08 11:07 EDT, Clark Williams
no flags Details | Diff
IB/cma - check for gid on listening device dirst (4.11 KB, patch)
2013-10-08 11:08 EDT, Clark Williams
no flags Details | Diff
IB/cache - don't fill the cache with junk (9.08 KB, patch)
2013-10-08 11:09 EDT, Clark Williams
no flags Details | Diff

  None (edit)
Description Clark Williams 2013-10-08 11:05:14 EDT
Description of problem:

https://bugzilla.redhat.com/show_bug.cgi?id=920306

Customers discovered performance regression using Mellanox h/w and IBM Websphere Low Latency Messageing (WLLM). 

Apply series of three patches to MRG Realtime kernels for this problem.
Comment 1 Clark Williams 2013-10-08 11:07:34 EDT
Created attachment 809352 [details]
IB/cma - use cached gids
Comment 2 Clark Williams 2013-10-08 11:08:24 EDT
Created attachment 809353 [details]
IB/cma - check for gid on listening device dirst
Comment 3 Clark Williams 2013-10-08 11:09:12 EDT
Created attachment 809354 [details]
IB/cache - don't fill the cache with junk
Comment 5 Clark Williams 2015-04-01 17:24:53 EDT
Picked up IB performance updates with later refresh of the tree.

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