vmstat counter "bug"

From: Andrew Kinney (andykinney_at_advantagecom.net)
Date: 07/31/03

  • Next message: Kenneth Culver: "Re: Ultra ATA card doesn't seem to provide Ultra speeds." 
    To: freebsd-hackers@freebsd.org
Date: Thu, 31 Jul 2003 09:51:32 -0700

    Hello,

    I'm sure this is probably just a limitation of the variable type used,
    but when we run a 'vmstat -m' on our 4.8-RELEASE machine, we
    get a negative integer on the "Requests" section of the memory
    totals.

    Memory Totals: In Use Free Requests
                   123946K 30979K -1730834065

    That negative integer is incrementing towards zero.

    This is a dual processor machine with 4GB of physical RAM and is
    running an SMP kernel.

    This machine pushes about 1TB a month and is used heavily as a
    web/email/database server, so it naturally puts big numbers
    through all parts of the OS. Its been running without reboot for 3
    months straight now.

    Is this worth submitting a PR for or is it one of those issues that
    would sit in the PR db for 7 years because nobody cares?

    I found the following related PR:

    http://www.freebsd.org/cgi/query-pr.cgi?pr=bin/30360
    open for almost 2 years

    It's definitely a non-critical issue, but a little "spit and polish"
    wouldn't hurt.

    Sincerely,
    Andrew Kinney
    President and
    Chief Technology Officer
    Advantagecom Networks, Inc.
    http://www.advantagecom.net

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  • Next message: Kenneth Culver: "Re: Ultra ATA card doesn't seem to provide Ultra speeds."