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- Newsgroups: comp.sys.sgi
- Path: sparky!uunet!news.univie.ac.at!chx400!bernina!hoesel
- From: hoesel@igc.ethz.ch (Frans van Hoesel)
- Subject: Re: SCSI floppy disk on INDIGO: Why is it so slooow?
- Message-ID: <1993Jan10.203946.26060@bernina.ethz.ch>
- Keywords: INDIGO, floppy, SCSI
- Sender: news@bernina.ethz.ch (USENET News System)
- Organization: University of Groningen, the Netherlands
- References: <ul1na40@zuni.esd.sgi.com> <1993Jan9.121657.5075@bernina.ethz.ch> <ulvj7ls@zuni.esd.sgi.com>
- Date: Sun, 10 Jan 1993 20:39:46 GMT
- Lines: 51
-
- Article 29670 of comp.sys.sgi:
- Path: bernina!chx400!ira.uka.de!sol.ctr.columbia.edu!usc!sdd.hp.com!think.com!ames!olivea!sgigate!odin!sgihub!zola!zuni!anchor!olson
- From: olson@anchor.esd.sgi.com (Dave Olson)
- Newsgroups: comp.sys.sgi
- Subject: Re: SCSI floppy disk on INDIGO: Why is it so slooow?
- Keywords: INDIGO, floppy, SCSI
- Message-ID: <ulvj7ls@zuni.esd.sgi.com>
- Date: 9 Jan 93 20:32:14 GMT
- References: <coizi01.726527326@convex> <ul1na40@zuni.esd.sgi.com> <1993Jan9.121657.5075@bernina.ethz.ch>
- Sender: news@zuni.esd.sgi.com (Net News)
- Organization: Silicon Graphics, Inc. Mountain View, CA
- Lines: 26
-
- In <1993Jan9.121657.5075@bernina.ethz.ch> hoesel@igc.ethz.ch (Frans van Hoesel) writes:
- | If you are not interested in msdosd, but only in speed, go for mtools
- | (ftp-able from lots of places). It works much, much faster.
- | So it may be hardware (becuase of the small buffer), but the difference
- | between msdosd and mtools is purely software. (try writing a 1MB file
- | with both programs, and you'll never use msdosd again)
- |
- | don't misunderstand me, msdosd would be a much better product than mtools,
- | because one can use the standard unix cp commands (and all the others).
- | Mtools comes with a separate mcopy command. For me mtools is a clear
- | winner, only because of the speed difference.
- |
- | still it doesn't write at the speed it could do on any normal pc (maybe
- | that's what Dave Olson wanted to explain?). Having mtools, there seems no
- | need to go for the future 2MB disks, just for reasons of speed.
-
- Dave Olson writes:
- > Even mtools won't get close to the speed of a floppy on a DOS system,
- > because of the single sector hardware buffer.
-
- > The engineer responsible for msdosd already knows about the discrepency
- > between mtools and msdosd, and is looking into the reasons. Unfortunately
- > it isn't a very high priority at the moment.
-
- The reason why msdosd is s sslloooooww and none of the programs runs
- as fast as any DOS system, must be more complicated than just a
- single sector hardware buffer. I asume that the same type of drive is used on
- DOS systems with the same single sector buffer.
- Maybe a software buffer would solve it.
-
- I Hope the priority of this problem will rise in near future.
-
- -- frans
-
- --
- -- ============================================================== --
- ---- === frans van hoesel hoesel@igc.ethz.ch === ----
- -- ============================================================== --
-