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From: dave@ridley.coyote.trw.com (Dave Agabra)
Newsgroups: comp.sys.amiga.hardware
Subject: A2090 transfer rate
Keywords: A2000 A2090 hard disk slow?
Message-ID: <275ED943.1B02@wilbur.coyote.trw.com>
Date: 6 Dec 90 23:50:27 GMT
Sender: news@wilbur.coyote.trw.com (News Software)
Organization: TRW Inc., Redondo Beach, CA
Lines: 42


    I have an old A2000 (rev 4.2) with an A2052 (?) 2MB memory board, a
A2090 disk controller, and a 20Mb Miniscribe disk drive.  Below are the
results I get with DiskPerf.  Are these normal for this hardware setup?
Also, DiskPerf starts getting R/W errors when it gets to a buffer size
of greater than 32k, which doesn't seem good.  I'm running 1.3, of course.

File create/delete:    create 11 files/sec, delete 30 files/sec
Directory scan:	    89 entries/sec
Seek/read test:	    91 seek/reads per second
r/w speed:	    buf 512 bytes, rd 67216 byte/sec, wr 26192 byte/sec
r/w speed:	    buf 4096 bytes, rd 114598 byte/sec, wr 88239 byte/sec
r/w speed:	    buf 8192 bytes, rd 147686 byte/sec, wr 102801 byte/sec
r/w speed:	    buf 32768 bytes, rd 166882 byte/sec, wr 108100 byte/sec

    Here's my mountlist entry for this partition:

FF0:
    Device = hddisk.device
    FileSystem = l:FastFileSystem
    Unit   = 1
    Flags  = 0
    Surfaces  = 4
    BlocksPerTrack = 17
    Reserved = 2
    Interleave = 0
    LowCyl = 28  ;  HighCyl = 611
    Buffers = 30
    GlobVec = 1
    BufMemType = 0
    DosType = 0x444F5301
    StackSize = 4000

    Any help is appreciated.  Thanks.

			---- Dave

--
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  One can certainly imagine the myriad of uses     dave@elwood.coyote.trw.com
  for a hand-held iguana maker.   -- Hobbes        {cit-vax | trwrb}!wiley!dave
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