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From: dillon@flea.best.net (Matt Dillon)
Newsgroups: comp.unix.bsd.freebsd.misc,comp.unix.bsd.bsdi.misc,comp.sys.sgi.misc
Subject: Re: no such thing as a "general user community"
Date: 20 Mar 1997 21:01:25 -0800
Organization: BEST Internet Communications, Inc.
Lines: 26
Message-ID: <5gt4n5$9cc@flea.best.net>
References: <331BB7DD.28EC@net5.net> <5gpf3b$j99@fido.asd.sgi.com> <5gs1de$k3s@flea.best.net> <5gsgsm$c5l@gazette.engr.sgi.com>
NNTP-Posting-Host: flea.best.net
Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:37473 comp.unix.bsd.bsdi.misc:6410 comp.sys.sgi.misc:29327
:In article <5gsgsm$c5l@gazette.engr.sgi.com>,
:Doug Cook <cook@candiru.engr.sgi.com> wrote:
:>
:>In article <5gs1de$k3s@flea.best.net>, dillon@flea.best.net writes:
:>> Currently, there are very few mediums where disk latency causes a
:>> problem. I can think of only one: Video. Everything else I can think
:>> of has no latency problems because the bandwidth is easily buffered
:>> with a FIFO. Not even multi-track sound editing poses a serious latency
:>> problem for a disk if it doesn't involve synchronization with video.
:>
:>I disagree. Latency is the main bottleneck for multitrack sound
:>editing, particularly where many tracks are involved and short
:>edits are permitted.
:>
:> -Doug
Only if the software is badly designed. 16 bits at 44KHz is
barely 100KBytes/sec. One disk alone can do 8 MBytes/sec
in linear transfer rate. Even if you have to seek 20 times a second
you will still get 4 MBytes/sec over the entire disk... and
that's ONE disk. If you have, say, four 2G disks dedicated
to your edit stream, we're talking around 120 to 160 FULL-bandwidth
tracks running in parallel without any fancy filesystem support.
-Matt