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Bug 629457

Summary:	vlan: control vlan device TSO status with ethtool
Product:	Red Hat Enterprise Linux 5	Reporter:	Andy Gospodarek <agospoda>
Component:	kernel	Assignee:	Andy Gospodarek <agospoda>
Status:	CLOSED ERRATA	QA Contact:	Liang Zheng <lzheng>
Severity:	medium	Docs Contact:
Priority:	low
Version:	5.5	CC:	hjia, jeder, kzhang, lzheng, peterm
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:
Clones:	645785 (view as bug list)		Environment:
Last Closed:	2011-01-13 21:14:36 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:
Bug Depends On:
Bug Blocks:	645785

Description Andy Gospodarek 2010-09-02 02:51:29 UTC

Patches were added in RHEL5.5 to enable TSO on vlan devices if the 
proper features were set for the driver.  There was a nice performance 
impact to this (I've seen ~50% drop in CPU utilization with a simple 
netperf test), but I did not want to add this to all the network drivers  
unless there was a way to disable it.

Comment 1 RHEL Program Management 2010-09-02 02:59:25 UTC

This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.

Comment 2 Andy Gospodarek 2010-09-02 04:08:35 UTC

The core change for this is ready.  I need to prepare the individual driver changes tomorrow (err later today).

Comment 6 Jarod Wilson 2010-09-15 14:01:48 UTC

in kernel-2.6.18-221.el5
You can download this test kernel from http://people.redhat.com/jwilson/el5

Detailed testing feedback is always welcomed.

Comment 12 errata-xmlrpc 2011-01-13 21:14:36 UTC

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0017.html