Bug 31565 - RC2 aic7xxx
Summary: RC2 aic7xxx
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: kernel   
(Show other bugs)
Version: 7.1
Hardware: i386 Linux
Target Milestone: ---
Assignee: Doug Ledford
QA Contact: Brock Organ
Depends On:
TreeView+ depends on / blocked
Reported: 2001-03-12 20:32 UTC by Rogelio Noriega
Modified: 2007-04-18 16:32 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2001-03-13 04:49:11 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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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).

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