Re: decreasing interrupt CPU load

From: Jason Stone (freebsd-performance_at_dfmm.org)
Date: 10/20/04

  • Next message: Steven Hartland: "Re: decreasing interrupt CPU load" 
    Date: Wed, 20 Oct 2004 13:34:56 -0700 (PDT)
To: freebsd-performance@freebsd.org

    -----BEGIN PGP SIGNED MESSAGE-----
    Hash: SHA1

    > Since you mentioned earlier that you run this on an SMP system, are you
    > aware that device polling is available only for single CPU kernels, that
    > is, not in SMP mode?

    I read somewhere that there wasn't a specific reason for not allowing
    device polling and smp to be used at the same time, and that it was fairly
    safe to remove the #ifdef SMP/#error block in sys/kern/kern_poll.c and
    compile in both smp and device polling.

    I haven't done this in a production environment, but I've done it on my
    smp desktop box, and it seems to work okay.

     -Jason

     --------------------------------------------------------------------------
     Freud himself was a bit of a cold fish, and one cannot avoid the suspicion
     that he was insufficiently fondled when he was an infant.
            -- Ashley Montagu

    -----BEGIN PGP SIGNATURE-----
    Version: GnuPG v1.2.3 (FreeBSD)
    Comment: See https://private.idealab.com/public/jason/jason.gpg

    iD8DBQFBdsvwswXMWWtptckRAm63AKDzgU1l9mjbxvP8tkfJHaQcHgLOngCgjXvg
    N18WsVLMV/icMXyQu3xsetY=
    =OzO5
    -----END PGP SIGNATURE-----
    _______________________________________________
    freebsd-performance@freebsd.org mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-performance
    To unsubscribe, send any mail to "freebsd-performance-unsubscribe@freebsd.org"

  • Next message: Steven Hartland: "Re: decreasing interrupt CPU load"