Message-ID: <20000430161926.7442.qmail@nwcst282.netaddress.usa.net>
Date: 30 Apr 00 10:19:26 MDT
From: Joseph Morris <b52g AT usa DOT net>
To: opendos AT delorie DOT com
Subject: Optimising disk access in DRDOS
X-Mailer: USANET web-mailer (M3.4.0.33)
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id LAA16806
Reply-To: opendos AT delorie DOT com

How can I improve the speed of disk read operations in DRDOS,
specifically long file reads and searches?

I have 96MB of memory, so a larger disk cache was the first obvious step.
NWcache seems to max out at 7MB, I found smartdrv to be faster, anyhow.
Going above 8MB in smartdrv doesn't seem to give much performance increase.

Are there any other decent disk caches?

In config.sys, I have:

HIBUFFERS=30
HIFILES=60
HIFCBS=4,4

Increasing the number of FCBS is something I'll try later on, but since this
seems to be related to searches and locked files, I'm not sure it will help
much.

Having seen how fluidly the my program runs when compiled for Linux, or even
the DOS version run in Windows 95, I'm a bit concerned about how slow it is
running under DRDOS.


____________________________________________________________________
Get free email and a permanent address at http://www.netaddress.com/?N=1