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Subject:	Re: Setup.exe -- Something Completely Different
From:	Robert Collins <rbcollins AT cygwin DOT com>
To:	Randall R Schulz <rrschulz AT cris DOT com>
Cc:	cygwin AT cygwin DOT com
In-Reply-To:	<5.1.0.14.2.20020909072032.035a7cc0@pop3.cris.com>
References:	<5 DOT 1 DOT 0 DOT 14 DOT 2 DOT 20020909072032 DOT 035a7cc0 AT pop3 DOT cris DOT com>
Date:	10 Sep 2002 08:29:44 +1000
Message-Id:	<1031610584.11225.16.camel@lifelesswks>
Mime-Version:	1.0

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On Tue, 2002-09-10 at 00:41, Randall R Schulz wrote:
> Hi,
>=20
> Running Cygwin Setup.exe seems to have the effect of flushing my system's=
=20
> disk cache (I'm on Win2K Pro SP3 with 512 megabytes of RAM). In the=20
> aftermath using other applications necessitates lots of in-paging and fil=
e=20
> system cache reconstruction so they're very sluggish at first. This sympt=
om=20
> may be exacerbated by the fact that I keep all the packages cached locall=
y=20
> (source and binary) and installed (binary only).
>=20
> Are there options in the Windows I/O API that would allow Setup.exe to=20
> bypass the system's disk cache when doing its MD5 checksum validation I/O=
?

There are for NT, I'm not sure about 9x. Also, we're using the C library
routines by and large at the moment, so that isn't an easy thing to
test.

Rob


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