From owner-freebsd-performance@FreeBSD.ORG  Wed Jul 16 15:01:57 2003
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From: "Petri Helenius" <pete@he.iki.fi>
To: "Steven Hartland" <killing@barrysworld.com>,
	"Jin Guojun [DSD]" <j_guojun@lbl.gov>,
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Date: Thu, 17 Jul 2003 01:01:49 +0300
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Subject: Re: timer counter chip access mystery]
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5.x defaults to ACPI or TSC timers. So your wish has been transported
by a timemachine into the past.

With 4.x you have to set it manually.

Pete

----- Original Message ----- 
From: "Steven Hartland" <killing@barrysworld.com>
To: "Petri Helenius" <pete@he.iki.fi>; "Jin Guojun [DSD]" <j_guojun@lbl.gov>; <freebsd-performance@freebsd.org>
Sent: Thursday, July 17, 2003 12:57 AM
Subject: Re: timer counter chip access mystery]


> 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
> 
>