[SAMBA] config/performance problem on solaris 8

[Justin Richards]

using iostat and doing some basic file testing such as:
time dd if=/dev/zero of=./tst bs=8192 count=8192
time dd if=./tst of=/dev/null bs=8192 count=8192

my write speed was about 13.5 meg a sec, and read was 13 meg a sec.

I didn't explain my disk set up before, let me do that briefly.

I have a SUN 1010 fiber disk array, with 16 18gig drives and 10 9gig drives.
The file systems I am doing my tests on are a stripe of 4 18gig drives.  I
also did some tests with a SUN 711 attached to the same system which has a
36 gig drive in it, with that I get right under 20 meg/sec read and right
(711 is attached with fast-wide scsi)

I'm going to recompile 2.2.7 and see if I get any different results..


----- Original Message -----
From: <jra at dp.samba.org>
To: "Justin Richards" <jwr at black0ps.org>
Cc: <samba at lists.samba.org>
Sent: Thursday, November 28, 2002 2:29 PM
Subject: Re: [SAMBA] config/performance problem on solaris 8


> On Thu, Nov 28, 2002 at 02:24:16PM -0600, Justin Richards wrote:
> > I have tried your advice, infact I removed everything but the necessary
> > server information and still no difference.  read speed still very good,
> > write speed still way below par.
>
> Ok, now you have to do some work to profile the system and see
> where the bottleneck may be. What is the maximum write speed
> onto the disk from a local process (ufs on Solaris is notoriously
> slow) ? Start there to find what your maximum should be and work
> back into Samba to find the bottleneck. System profile tools
> (top, vmstat, iostat) are useful here.
>
> Jeremy.
>