timer counter chip access mystery]

[Petri Helenius]

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 at barrysworld.com>
To: "Petri Helenius" <pete at he.iki.fi>; "Jin Guojun [DSD]" <j_guojun at lbl.gov>; <freebsd-performance at 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 at he.iki.fi>
> To: "Jin Guojun [DSD]" <j_guojun at lbl.gov>; <freebsd-performance at 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
> 
>