Disk buffer / memory utilization

From: R. Payette (premi_at_altern.org)
Date: 10/26/04

  • Next message: Eric Anderson: "Re: Disk buffer / memory utilization" 
    To: freebsd-performance@freebsd.org
Date: Mon, 25 Oct 2004 22:09:05 -0400

    I'm trying to get the best performances from a ratter limited system.
    My question is 2 fold :

    1- the 'buf' column in top, I thought freebsd ( and other modern OSes )
    used free memory for disk buffer until it is required for something
    else. But I see on my system that the 'buf' is always 14 M no matter
    the load on the server, even in heavy swapping situations, it remains
    14 M.

    2- how to reduce the wired memory ? I have a lean custom built kernel
    and 17M ( around 22M after a few hour of utilization ) is a little to
    much to be normal. I mean, out of the 64M this machine has, 36M are
    locked out by the bare system which has, a network card, a hard disk
    and an unused video card ( headless machine ).

    Is there something I can tune in sysctl or my kernel conf ? or is it a
    concept I don't get correctly ?

    Thanks for any help, pointers

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  • Next message: Eric Anderson: "Re: Disk buffer / memory utilization"