Path: utzoo!utgpu!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!pasteur!ucbvax!CORY.BERKELEY.EDU!dillon
From: dillon@CORY.BERKELEY.EDU (Matt Dillon)
Newsgroups: comp.sys.amiga
Subject: Re: Hard Disk Performance tests, comments invited
Message-ID: <8810211759.AA12878@cory.Berkeley.EDU>
Date: 21 Oct 88 17:59:49 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Lines: 41

:	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

	It doesn't happen, at least not as bad as you suggest.  I've been 
using my HD for a long while and have not have any significant performance 
degradation.  If it ever gets that bad for me (After a couple years), I
might copy things off the parition and then back on, but that is as far
as I'll ever need to go.

:	performance.  The Sun filesystem also delivers more file
:	information, eg creation/modification/access dates, ownership
:	and symbolic/hard links.  So let's not just key on who fast

	UNIX (Hint Hint), *NOT* Sun, UNIX.  Thank you.  I would like 
softlinks, but that is all I care fore.  All the other junk is useful only
in a hostile-multi-user enviroment and won't belong on a personal computer
for another couple of years. 

:	we can do 1 mByte reads.  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.

	mmm...  UNIX again.  Not true, there are three crash recovery
mechanisms available on the Amiga:  The internal recovery system, the
one C-A provides, and a PD one... probably even more.

:	   on it.  I am merely pointing out that we've a ways to go on
:	   Amiga before we even reach the current state of the art in Unix
:	   systems.

	I wouldn't say that.  The only thing UNIX provides that I would want
on my Amiga is VM, firewalls, and resource tracking (which you need for
firewalls anyway).  The filesystem is right up there with most UNIX systems,
at least as far as the single-user nature of the machine goes.

				-Matt