Re: High traffic NFS performance and availability problems

From: Martin Nilsson (martin_at_gneto.com)
Date: 02/22/05

  • Next message: David Rice: "Re: High traffic NFS performance and availability problem" 
    Date: Tue, 22 Feb 2005 10:45:32 +0100
To: Robert Watson <rwatson@FreeBSD.org>

    Robert Watson wrote:
    > In the top output below, it looks like there's a lot of contention on
    > Giant. In 5.3-RELEASE and before, the amr driver is not MPSAFE, but my
    > understanding is that in 5-STABLE, it has been made MPSAFE, which may make
    > quite a difference in performance. I pinged Scott Long, who did the work

    The locking of amr have not been MFC:d to RELENG_5 yet, I've just
    checked with webcvs. From my brief and unconclusive tests the locked
    driver was much faster (about 2x on sequential transfers).

    /Martin
    _______________________________________________
    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: David Rice: "Re: High traffic NFS performance and availability problem"