Bug 1016724 - infiniband - performance regression fixes
Summary: infiniband - performance regression fixes
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise MRG
Classification: Red Hat
Component: realtime-kernel
Version: Development
Hardware: x86_64
OS: All
unspecified
high
Target Milestone: ---
: ---
Assignee: Red Hat Real Time Maintenance
QA Contact: MRG Quality Engineering
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2013-10-08 15:05 UTC by Clark Williams
Modified: 2015-04-01 21:24 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-04-01 21:24:53 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
IB/cma - use cached gids (6.21 KB, patch)
2013-10-08 15:07 UTC, Clark Williams 		no flags Details | Diff
IB/cma - check for gid on listening device dirst (4.11 KB, patch)
2013-10-08 15:08 UTC, Clark Williams 		no flags Details | Diff
IB/cache - don't fill the cache with junk (9.08 KB, patch)
2013-10-08 15:09 UTC, Clark Williams 		no flags Details | Diff
View All

Description Clark Williams 2013-10-08 15:05:14 UTC 
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 15:07:34 UTC 
Created attachment 809352 [details]
IB/cma - use cached gids
Comment 2 Clark Williams 2013-10-08 15:08:24 UTC 
Created attachment 809353 [details]
IB/cma - check for gid on listening device dirst
Comment 3 Clark Williams 2013-10-08 15:09:12 UTC 
Created attachment 809354 [details]
IB/cache - don't fill the cache with junk
Comment 5 Clark Williams 2015-04-01 21:24:53 UTC 
Picked up IB performance updates with later refresh of the tree.
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