Date: Thu, 10 Apr 1997 09:07:28 +0200 (MET DST) From: Udo Wolter <uwp@ukrv.de> To: questions@freebsd.org Subject: Re: mtools and speed Message-ID: <9704100707.AA21417@merlin.ukrv.de> In-Reply-To: <no.id> from "uwp" at Apr 7, 97 08:36:04 am
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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 !!!
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