Re: headsup: swap_pager.c

From: Poul-Henning Kamp (phk_at_phk.freebsd.dk)
Date: 08/01/03

  • Next message: David Schultz: "Re: headsup: swap_pager.c" 
    To: Robert Watson <rwatson@freebsd.org>
Date: Fri, 01 Aug 2003 09:06:18 +0200

    In message <Pine.NEB.3.96L.1030731190517.85739A-100000@fledge.watson.org>, Robe
    rt Watson writes:
    >
    >On Thu, 31 Jul 2003, Poul-Henning Kamp wrote:
    >
    >> I am in the process of changing the on-disk layout policy used by the
    >> swap_pager.
    >
    >Do you anticipate any performance changes as a result of this change?

    Anticipate ? No.
    Be surprised by improvements ? No.

    The striping code limits the I/O size for paging activity to a small
    size. By laying out each disk sequentially in the "swap device" we
    can increase that size to what our I/O system can lift. 

    -- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
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  • Next message: David Schultz: "Re: headsup: swap_pager.c"

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