Bug 218756

Summary:	dlm lowcomms is single-threaded
Product:	Red Hat Enterprise Linux 5	Reporter:	Christine Caulfield <ccaulfie>
Component:	kernel	Assignee:	David Teigland <teigland>
Status:	CLOSED DUPLICATE	QA Contact:	Red Hat Kernel QE team <kernel-qe>
Severity:	low	Docs Contact:
Priority:	low
Version:	5.0	CC:	ccaulfie, cluster-maint
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
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Clone Of:		Environment:
Last Closed:	2007-04-12 09:31:30 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Christine Caulfield 2006-12-07 11:13:16 UTC

There is currently only a single dlm_recvd & dlm_sendd thread per machine.
On a busy SMP system this could become a bottleneck.

There should be at least one dlm_recvd thread per CPU in the system I think.

Comment 1 Christine Caulfield 2007-01-08 11:15:39 UTC

A patch (for comments) has been posted to 
https://www.redhat.com/archives/cluster-devel/2007-January/msg00013.html

Comment 2 Christine Caulfield 2007-01-23 15:23:13 UTC

This patch is now in Steve's -nmw tree to get further testing.

Comment 3 Christine Caulfield 2007-02-12 11:58:26 UTC

This patch (with several fixes) in now in Linus' tree. It only affects the TCP
transport. SCTP is more complex and yet to do.

Comment 4 Christine Caulfield 2007-04-12 09:31:30 UTC

I'm closing this because the TCP transport is already multithreaded and the SCTP
transport parts have been amalgamated with it.

See Bug 219799


*** This bug has been marked as a duplicate of 219799 ***

Comment 5 Nate Straz 2007-12-13 17:40:47 UTC

Moving all RHCS ver 5 bugs to RHEL 5 so we can remove RHCS v5 which never existed.