From owner-freebsd-current  Sat Apr 19 23:25:25 1997
Return-Path: <owner-current>
Received: (from root@localhost)
          by freefall.freebsd.org (8.8.5/8.8.5) id XAA07471
          for current-outgoing; Sat, 19 Apr 1997 23:25:25 -0700 (PDT)
Received: from godzilla.zeta.org.au (godzilla.zeta.org.au [203.2.228.19])
          by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id XAA07421
          for <current@freebsd.org>; Sat, 19 Apr 1997 23:23:59 -0700 (PDT)
Received: (from bde@localhost) by godzilla.zeta.org.au (8.8.5/8.6.9) id QAA12751; Sun, 20 Apr 1997 16:15:27 +1000
Date: Sun, 20 Apr 1997 16:15:27 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199704200615.QAA12751@godzilla.zeta.org.au>
To: hasty@rah.star-gate.com, imp@village.org
Subject: Re: Speed deamons: How to build a build box?
Cc: current@freebsd.org
Sender: owner-current@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk

>: Next check the speed of the disks with something like iozone.
>
>IOZONE tells me:
>
>JAZ:	1.5MB/s write, 5.2MB/s read
>Fireball: 1.4MB/s write, 2.7MB/s read

Are the file systems equivalently fragmented?  If not, perhaps you need
to upgrade to an IDE Fireball :->.  FireballTM's should have an iozone
speed of about 5 MB/s for both read and write.  I get 4.98 MB/s write
and 4.67 MB/s read for `iozone 512 8' for an IDE FireballTM2110A with
a 1/10-full partition at offset 649152, size 2951424 sectors.

>Disks are both 4500 rpm.  The JAZ is 12ms seek and the Fireball is
>10.5ms seek time.

Seek time is not the greatest, but iozone seek much.

Bruce