Bug 28892

Summary: Poor disk performance on version 4.3
Product: Base System Reporter: Guy Baker <guy>
Component: i386Assignee: Søren Schmidt <sos>
Status: Closed FIXED    
Severity: Affects Only Me    
Priority: Normal    
Version: Unspecified   
Hardware: Any   
OS: Any   

Description Guy Baker 2001-07-11 16:50:02 UTC 
We are experience extremly slow disk performance.

We have set hw.ata.wc="1" in /boot/loader.conf which has impoved performance but still when extrating a tar archive we are seeing in the region of 3,000 files per minute extracted, when on our other machine which runs 4.0 we are seeing 10,000 to 15,000 files per minute.

The Mother board is Elite D6VAA the disk drives are IBM 5200 spin, ATA66

Help!

Guy

How-To-Repeat: See description
Comment 1 ru freebsd_committer freebsd_triage 2001-07-11 17:25:03 UTC 
State Changed
From-To: open->feedback

Please send your /var/run/dmesg.boot file, ideally with verbose boot option.
Comment 2 ru freebsd_committer freebsd_triage 2001-07-11 17:25:03 UTC 
Responsible Changed
From-To: freebsd-bugs->sos

Soren should be interested in this.
Comment 3 Gregory Bond 2001-07-12 00:20:37 UTC 
This might be explained by softupdates enabled on the fast box and not the slow
box.  Untarring large directory trees is where softupdates gives most
performance boost (the 3-5x experienced is not unreasonable).  Check the output
of the "mount" command on both systems.
Comment 4 Kris Kennaway 2001-07-13 00:26:01 UTC 
On Wed, Jul 11, 2001 at 08:48:58AM -0700, Guy Baker wrote:

> We have set hw.ata.wc="1" in /boot/loader.conf which has impoved
> performance but still when extrating a tar archive we are seeing in
> the region of 3,000 files per minute extracted, when on our other
> machine which runs 4.0 we are seeing 10,000 to 15,000 files per
> minute.

What mount options are the FSes mounted with?  Show the output of
mount(8) please.

> The Mother board is Elite D6VAA the disk drives are IBM 5200 spin, ATA66

I assume the other machine has exactly the same hardware specs?

Kris
Comment 5 Søren Schmidt freebsd_committer freebsd_triage 2001-09-06 10:04:19 UTC 
State Changed
From-To: feedback->closed

No feedback, and this is considered to be because of WC being off in 4.3.