Bug 46145

Summary:	swapoff performance on kernel 2.4.3-12
Product:	[Retired] Red Hat Linux	Reporter:	Ed McKenzie <eem12>
Component:	kernel	Assignee:	Arjan van de Ven <arjanv>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Brock Organ <borgan>
Severity:	high	Docs Contact:
Priority:	medium
Version:	7.1
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2003-06-06 14:04:08 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 Ed McKenzie 2001-06-27 03:01:36 UTC

swapoff appears to be broken on 2.4.3-12.  Running swapoff -a on 2.2 used
to take about as long as it would to read the data back into memory, but in
recent 2.4 it seems to lock up the system with no LED activity for a good
while.  It eventually comes back after several minutes, but this isn't
correct behavior.

IIRC there was a thread about this on lkml some time ago.

Comment 1 Arjan van de Ven 2001-06-27 08:17:41 UTC

There was. And it appears the very brand spanking new kernels (2.4.6pre5) 
have _some_ improvements in this area, although it's far from perfect.