Xref: utzoo comp.sys.amiga:24353 comp.sys.amiga.tech:2213
Path: utzoo!utgpu!attcan!uunet!cbmvax!jesup
From: jesup@cbmvax.UUCP (Randell Jesup)
Newsgroups: comp.sys.amiga,comp.sys.amiga.tech
Subject: Re: Hard Disk Performance tests, comments invited
Message-ID: <5067@cbmvax.UUCP>
Date: 21 Oct 88 18:46:26 GMT
References: <10150@cup.portal.com> <5030@cbmvax.UUCP> <1728@sbcs.sunysb.edu>
Reply-To: jesup@cbmvax.UUCP (Randell Jesup)
Distribution: na
Organization: Commodore Technology, West Chester, PA
Lines: 30

In article <1728@sbcs.sunysb.edu> root@sbcs.sunysb.edu (root) writes:
>In article <5030@cbmvax.UUCP>, jesup@cbmvax.UUCP (Randell Jesup) writes:
>> 	Suns? Ha! Slow as worms!  :-)  And anything with an _INTEL_ processor?
>> Evil, kill it before it infects something, slower than molasses!  :-)
>
>	Wouldn't be too quick to downside Sun disk performance, even
>	in jest :-).  The Sun may not deliver the absolute transfer
>	speed of FFS, but it will continue to deliver the same
>	transfer speed on day 1 after the initial format and on
>	day N.  Unless FFS has some reasonable fragmentation control
>	algorithms you're going to suffer the same slow downs that
>	the "old" Unix filesystem did, ie freshly formatted you got
>	~150 kBytes/sec, after a few weeks you had only ~30 kBytes/sec
>	performance.

	I was just joking... :-)
	FFS was built with knowlege of the Berkeley Fast Fast System.  It
does attempt to avoid excessive fragmentation, though it is somewhat less
important in a single-user machine.  Good partitioning decisions help reduce
fragmentation problems a lot.

> The Sun filesystem also has tools
>	for crash recovery; too often I've heard the only tool available
>	for Amiga FS recovery is diskdoctor followed by a format.

	There's also DiskSalv.

-- 
You've heard of CATS? Well, I'm a member of DOGS: Developers Of Great Software.
Randell Jesup, Commodore Engineering {uunet|rutgers|allegra}!cbmvax!jesup