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Date: Wed, 11 Jul 2001 08:48:58 -0700 (PDT)
From: Guy Baker <guy@homes-on-line.com>
To: freebsd-gnats-submit@FreeBSD.org
Subject: Poor disk performance on version 4.3
X-Send-Pr-Version: www-1.0

>Number:         28892
>Category:       i386
>Synopsis:       Poor disk performance on version 4.3
>Confidential:   no
>Severity:       non-critical
>Priority:       high
>Responsible:    sos
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jul 11 08:50:02 PDT 2001
>Closed-Date:    Thu Sep 6 02:04:19 PDT 2001
>Last-Modified:  Thu Sep 06 02:06:12 PDT 2001
>Originator:     Guy Baker
>Release:        4.3
>Organization:
Homes-on-line
>Environment:
FreeBSD mac2.homes-on-line.com 4.3-RELEASE FreeBSD 4.3-RELEASE #1: Fri Jul  6 22
:27:22 BST 2001     gc@mac2.homes-on-line.com:/usr/src/sys/compile/HOL2001  i386
>Description:
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
>Fix:

>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->feedback 
State-Changed-By: ru 
State-Changed-When: Wed Jul 11 09:25:03 PDT 2001 
State-Changed-Why:  
Please send your /var/run/dmesg.boot file, ideally with verbose boot option. 


Responsible-Changed-From-To: freebsd-bugs->sos 
Responsible-Changed-By: ru 
Responsible-Changed-When: Wed Jul 11 09:25:03 PDT 2001 
Responsible-Changed-Why:  
Soren should be interested in this. 

http://www.FreeBSD.org/cgi/query-pr.cgi?pr=28892 

From: Gregory Bond <gnb@itga.com.au>
To: Guy Baker <guy@homes-on-line.com>
Cc: freebsd-gnats-submit@FreeBSD.ORG
Subject: Re: i386/28892: Poor disk performance on version 4.3 
Date: Thu, 12 Jul 2001 09:20:37 +1000

 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.
 
 

From: Kris Kennaway <kris@obsecurity.org>
To: Guy Baker <guy@homes-on-line.com>
Cc: freebsd-gnats-submit@FreeBSD.org
Subject: Re: i386/28892: Poor disk performance on version 4.3
Date: Thu, 12 Jul 2001 16:26:01 -0700

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 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
 
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 --SLDf9lqlvOQaIe6s--
State-Changed-From-To: feedback->closed 
State-Changed-By: sos 
State-Changed-When: Thu Sep 6 02:04:19 PDT 2001 
State-Changed-Why:  
No feedback, and this is considered to be because of WC being off in 4.3. 

http://www.FreeBSD.org/cgi/query-pr.cgi?pr=28892 
>Unformatted:
