Bug 31565

Summary:	RC2 aic7xxx
Product:	[Retired] Red Hat Linux	Reporter:	Rogelio Noriega <rogelio_noriega>
Component:	kernel	Assignee:	Doug Ledford <dledford>
Status:	CLOSED RAWHIDE	QA Contact:	Brock Organ <borgan>
Severity:	medium	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:	2001-03-13 04:49:11 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 Rogelio Noriega 2001-03-12 20:32:21 UTC

I'm seeing a problem with poor performance
on SCSI drives.  IDE drives take about 15 minutes
to do an "everything" install from HDD.  The same
install on the same computer except using a SCSI
HDD takes about 40 minutes.

When I try hdparm -t /dev/hda I get between 16 MB/sec
for laptop drives to 25 MB/sec for EIDE 100 drives.  The same test 
on /dev/sda
with 15K rpm SCSI 3 Seagate Cheetah drives produces 5 MB/sec.

Comment 1 Doug Ledford 2001-03-15 04:32:02 UTC

The qa0314 and later trees are known to have this issue solved (the default
queue depth in the RC2 release was 1 and that severly limited performance,
upping the queue depth to 32 has helped tremendously).