Article View: comp.sys.amiga.tech
Article #4512Re: Dhrystone & Diskperf results(?)
From: Randell Jesup
Date: Mon, 23 Jul 1990 20:12
Date: Mon, 23 Jul 1990 20:12
21 lines
1386 bytes
1386 bytes
In article <25660@mimsy.umd.edu> kelso@mimsy.umd.edu (Stephen Kelley) writes:
>Diskperf:
> now *this* was more disconcerting...
> I got 26000 bytes/sec read, 19000bytes/sec write @ 512
> 200000 bytes/sec read @ 8192
> 580000 bytes/sec read @ 512K
> What happened here??? Subjectively, my system *seems* fast.
Diskperf is pretty brain-dead, which is why there are so many variants
of it around. DiskSpeed is more reliable as an indicator of true speed, though
the Seek/Read test is a bit over-simplistic.
That drive you have will probably top 700 or 800 K/s reads on large
reads, as opposed to the 580 number from diskperf. Diskperf is also
particularily inaccurate at high speeds (one of the reasons DiskSpeed has
three different intensity levels).
--
Randell Jesup, Keeper of AmigaDos, Commodore Engineering.
{uunet|rutgers}!cbmvax!jesup, jesup@cbmvax.cbm.commodore.com BIX: rjesup
Common phrase heard at Amiga Devcon '89: "It's in there!"
Technical Details
Message-ID:
<13374@cbmvax.commodore.com>Path:
arc1-ca.pugleaf.net!utzoo!attcan!uunet!cbmvax!jesupReferences:
<25660@mimsy.umd.edu>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!cbmvax!jesup From: jesup@cbmvax.commodore.com (Randell Jesup) Newsgroups: comp.sys.amiga.tech Subject: Re: Dhrystone & Diskperf results(?) Keywords: A3000 dhrystone & diskperf Message-ID: <13374@cbmvax.commodore.com> Date: 23 Jul 90 20:12:44 GMT References: <25660@mimsy.umd.edu> Reply-To: jesup@cbmvax (Randell Jesup) Organization: Commodore, West Chester, PA Lines: 21