From owner-freebsd-questions Thu Apr 10 00:09:02 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id AAA20185 for questions-outgoing; Thu, 10 Apr 1997 00:09:02 -0700 (PDT) Received: from gatekeeper.ukrv.de (gatekeeper.ukrv.de [193.175.72.2]) by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id AAA20171 for ; Thu, 10 Apr 1997 00:08:57 -0700 (PDT) Received: by gatekeeper.ukrv.de; (5.65/1.1.8.2/17Oct95-0336PM) id AA15484; Thu, 10 Apr 1997 09:07:58 +0200 Received: from mailhost(193.175.66.33) by gatekeeper.ukrv.de via smap (V1.3-JSC) id sma000412; Thu Apr 10 09:07:29 1997 Received: from merlin.ukrv.de by mailhost.ukrv.de; (5.65/1.1.8.2/08Mar95-0213PM) id AA26141; Thu, 10 Apr 1997 09:07:28 +0200 Received: by merlin.ukrv.de (4.1/UKRV-Gen PCG 0.1) id AA21417; Thu, 10 Apr 97 09:07:28 +0200 From: Udo Wolter Message-Id: <9704100707.AA21417@merlin.ukrv.de> Subject: Re: mtools and speed To: questions@freebsd.org Date: Thu, 10 Apr 1997 09:07:28 +0200 (MET DST) In-Reply-To: from "uwp" at Apr 7, 97 08:36:04 am Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Mailer: ELM [version 2.4 PL17] Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8bit Sender: owner-questions@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Hi ! > Can anyone tell me why the mtools are getting slowly when I write to > SCSI disks instead of IDE disks ? At home I have a SCSI disk partitioned in > FreeBSD/DOS partitions and when I'm using mcopy to write onto the DOS > partition I get a rate of nearly 2KB/s. Even a mdir command acts very > slow, sometimes the whole system freezes for maybe 15-25 seconds. > > At work I have a Toshiba laptop with an IDE disk (also 1 DOS and 1 FreeBSD > partition on it). When I'm writing to the DOS partition with mcopy it's > really fast (I think nearly 1 MB/s). An mdir is also very fast. > So what can I do ? Is it a SCSI-problem ? I have an Adaptec 2940AU and > all of my disks act the same...:-( > Maybe there's a fix for the SCSI subsystem ? By the way: I'm using > FreeBSD 2.1.6R, maybe I should update ? Anyway, I got these problems since > the first use of the mtools in 2.1 for using them to write to DOS partitions. > > By the way, I'm only using the msdosfs when reading DOS files. I trashed > my disk too often after writing to it, so I have to use the mtools because > they're working perfectly. They are just damn slow...:-( Ok, since msdosfs can crash your DOS partitions you should use mtools-3.5a for writing to these partitions. They work now for me. Don't use a version less then 3.4 when you trying to access SCSI-disks ! Otherwise you have a slower disk-access than to a floppy...:-( Just for those who are interested... Bye, Udo -- Udo Wolter, email: uwp@cs.tu-berlin.de !!! LOW-TECH Page: http://www.cs.tu-berlin.de/~uwp/low-tech.html !!!