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- Newsgroups: comp.sys.amiga.hardware
- Path: sparky!uunet!mcsun!ieunet!tcdcs!unix1.tcd.ie!bmccnnll
- From: bmccnnll@unix1.tcd.ie (Barry McConnell)
- Subject: Re: My A4000 HD performance
- Message-ID: <bmccnnll.721489128@unix1.tcd.ie>
- Sender: usenet@cs.tcd.ie (NN required at ashe.cs.tcd.ie)
- Nntp-Posting-Host: unix1.tcd.ie
- Organization: Trinity College, Dublin
- References: <1992Nov1.030034.20922@beaver.cs.washington.edu> <1992Nov10.034248.12352@mpifr-bonn.mpg.de>
- Date: Wed, 11 Nov 1992 13:38:48 GMT
- Lines: 17
-
- In <1992Nov10.034248.12352@mpifr-bonn.mpg.de> mlelstv@speckled.mpifr-bonn.mpg.de (Michael van Elst) writes:
-
- >>DiskSpeed 3.1 reports that my Maxtor 7120 / 2091 is doing 29 K/s
- >>(Yes, that's 29000 bytes) reads with all contention turned off.
-
- >No. It is pretty normal. The A2091 cannot DMA to any memory but chip
- >memory in your A4000. Thus the filesystem will allocate a single buffer
- >(512bytes) in chip memory to do file transfers.
-
- I have been told that my program DMAfix will solve this problem quite nicely.
- It was really intended for use on something like an A2000/A2091/CSA MMR, but
- it comes in very handy if you need to use an A2091 in an A4000.
-
- E-mail me if you can't find a copy elsewhere...
-
- Barry.
-
-