Re: timer counter chip access mystery]

From: Steven Hartland (killing_at_barrysworld.com)
Date: 07/16/03

  • Next message: Petri Helenius: "Re: timer counter chip access mystery]" 
    To: "Petri Helenius" <pete@he.iki.fi>, "Jin Guojun [DSD]" <j_guojun@lbl.gov>, <freebsd-performance@freebsd.org>
Date: Wed, 16 Jul 2003 22:57:07 +0100

    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

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