Buffered seek and the A2090A?

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#10235

From: Blaine Gardner
Date: Tue, 08 Nov 1988 05:53

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I've got a Seagate ST4096 (80 meg ST506/412) hooked up to my A2090A.
This drive has a buffered seek of 3-70 microseconds. Is there any way to
exploit this with the A2090A? I saw no mention of this feature at all in
the A2090(A) manual.


The diskperf times seemed rather uninspiring for a 28Ms drive, any
suggestions for speeding things up?


File create/delete:     create 9 files/sec, delete 31 files/sec
Directory scan:         48 entries/sec
Seek/read test:         65 seek/reads per second
r/w speed:              buf 512 bytes, rd 55775 byte/sec, wr 27887 byte/sec
r/w speed:              buf 4096 bytes, rd 131072 byte/sec, wr 109226 byte/sec
r/w speed:              buf 8192 bytes, rd 163840 byte/sec, wr 131072 byte/sec
r/w speed:              buf 32768 bytes, rd 201649 byte/sec, wr 154202 byte/sec



(PS to Dale Luck: I've tried e-mailing you, but no response. My A2090A 
 will not format the ST4096 with 9 heads. Can we talk about that ROM?)
-- 
Blaine Gardner @ Evans & Sutherland    580 Arapeen Drive, SLC, Utah 84108
Here: utah-cs!esunix!blgardne   {ucbvax,allegra,decvax}!decwrl!esunix!blgardne
There: uunet!iconsys!caeco!pedro!worsel!blaine (under construction)
"Nobody will ever need more than 64K."    "Nobody needs multitasking on a PC."

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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!lll-tis!oodis01!uplherc!esunix!blgardne
From: blgardne@esunix.UUCP (Blaine Gardner)
Newsgroups: comp.sys.amiga.tech
Subject: Buffered seek and the A2090A?
Keywords: Is it supported?
Message-ID: <1065@esunix.UUCP>
Date: 8 Nov 88 05:53:49 GMT
Organization: Evans & Sutherland Computer Corporation
Lines: 26