Re: 'vmpfw' state

From: Doug White (dwhite_at_gumbysoft.com)
Date: 12/24/04

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    Date: Fri, 24 Dec 2004 14:33:43 -0800 (PST)
To: Michael Riexinger <michael.riexinger@de.clara.net>

    On Tue, 21 Dec 2004, Michael Riexinger wrote:

    > i have a imap server with cyrus running under FreeBSD 5.3-RELEASE. There
    > are around 25000 mailboxes (around 30gb small mails). When starting
    > cyrus, the lmtpd is in vmpfw state for around 15 minutes and consumes
    > very much cpu and memory. When using truss, i see a lseek loop. What
    > exactly is the vmpfw state and how can i accelerate that thing?

    How much memory does the system have?

    The vmpfw WCHAN is used in the pagefault handler when the page its trying
    to fault in is busy. You have problems with pages getting stuck busy if
    the system is either swapping heavily or the disk is too busy to fault in
    the pages in the first place. 

    -- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite@gumbysoft.com          |  www.FreeBSD.org
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