Bug 114494

Summary:	Severe NFS performance problems
Product:	Red Hat Enterprise Linux 2.1	Reporter:	Andrew Merrill <merrill>
Component:	kernel	Assignee:	Arjan van de Ven <arjanv>
Status:	CLOSED ERRATA	QA Contact:	Brian Brock <bbrock>
Severity:	high	Docs Contact:
Priority:	medium
Version:	2.1	CC:	caron, riel
Target Milestone:	---
Target Release:	---
Hardware:	i686
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2004-04-15 15:03:04 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 Andrew Merrill 2004-01-28 18:37:43 UTC

Description of problem:

We have AS 2.1 on several two and four way Dell systems.  We upgraded
four systems from revision 27 of the enterprise kernel to revision 35.
 We noticed immediate network performance degredation on the four
upgraded machines.  We were able to narrow this down to NFS operations.


Version-Release number of selected component (if applicable):


How reproducible:

Very


Steps to Reproduce:
1.  On system with v 35 kernel initiate NFS operations
2.  On same system reboot with v 27 kernel
3.
  
Actual results:

We were not able to quantify how much slower machines with the v 35
kernel were, but it was large orders of magnitude.  Booting with the
system with the older revision immediately fixed the problem.

Expected results:


Additional info:

Comment 1 Jason Baron 2004-04-15 15:03:04 UTC

This has long been fixed in the current erratum kernel, e.38