From owner-freebsd-performance@FreeBSD.ORG  Wed Jul 16 14:58:50 2003
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From: "Steven Hartland" <killing@barrysworld.com>
To: "Petri Helenius" <pete@he.iki.fi>,
	"Jin Guojun [DSD]" <j_guojun@lbl.gov>,
	<freebsd-performance@freebsd.org>
References: <3F15C584.38848DCE@lbl.gov>
	<071401c34be3$71a03510$812a40c1@PETEX31>
Date: Wed, 16 Jul 2003 22:57:07 +0100
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Subject: Re: timer counter chip access mystery]
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If this could be changed / fixed it would have a marked performance increase
for all game server code which use this function heavily from what I've seen
and would explain the sometimes huge performance differential between
FreeBSD and Linux.

    Steve / K
----- Original Message ----- 
From: "Petri Helenius" <pete@he.iki.fi>
To: "Jin Guojun [DSD]" <j_guojun@lbl.gov>; <freebsd-performance@freebsd.org>
Sent: Wednesday, July 16, 2003 10:44 PM
Subject: Re: timer counter chip access mystery]


> 
> This access happens over ISA bus and thus happens at the speed the bus
> operates at. Use TSC or ACPI for faster gettimeofday.
> 
> Pete