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Date:      Mon, 7 Apr 1997 08:36:05 +0200 (MET DST)
From:      Udo Wolter <uwp@ukrv.de>
To:        questions@freebsd.org
Subject:   mtools and speed
Message-ID:  <9704070636.AA11394@merlin.ukrv.de>

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Hi !

I asked this earlier in this list, but no one answered so I assume, that no
one got this message.

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...:-(

Thanx for any help !

Bye,
        Udo

--
Udo Wolter, email: uwp@cs.tu-berlin.de
!!! LOW-TECH Page: http://www.cs.tu-berlin.de/~uwp/low-tech.html !!!




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