Re: file: table is full.

From: Jez Hancock (jez.hancock_at_munk.nu)
Date: 05/31/03

  • Next message: Tim Kellers: "Re: OpenOffice.org 1.0.2 and FreeBSD 4.8-RELEASE" 
    Date: Sat, 31 May 2003 19:25:02 +0100
To: freebsd-questions@FreeBSD.org

    On Sat, May 31, 2003 at 09:31:16AM -0700, Hugo Saro wrote:
    > Hi list,
    >
    > I have a fbsd server as a gateway on my home lan. It's
    > running 4.7-STABLE , specs p200 mmx 80mb ram 2 hdd's
    > .. it works fine , but I do get a regular (sort of)
    > problem.
    >
    > When there's some problem with my ISP and dhclient
    > keeps trying getting an IP, eventually when I get home
    > i'll have lots of message spammed in the console, and
    > ps w ls etc will say too many open files in system. I
    > normally solved this by killing some processes,
    > unplugging and plugging the network cables, and by
    > killing dhclient. When it fired up again it would be
    > working. But today i couldn't even kill because it
    > said it couldn't open some .so (I'm sure they're
    > there)
    Try increasing the number of available file descriptors. You can do
    this dynamically at boot time using something like:

    kern.maxuser=64

    in /etc/sysctl.conf,
    which assigns a suitable number of file descriptors for 64 users - for
    more info see 'man tuning' - but also increases various other kernel
    flags as well.

    Make sure to check your current 'maxusers' sysctl setting - something
    like:

    sysctl -a | grep maxusers

    should work... also look at some of the other sysctl settings whilst
    you're at it:

    sysctl -a | grep file

    maybe?

    I get this on my system:

    [19:15:37] munk@users /home/munk# sysctl -a | grep file
    kern.maxfiles: 8168
    kern.bootfile: /kernel
    kern.maxfilesperproc: 7351
    kern.openfiles: 751
    kern.corefile: %N.core
    kern.filedelay: 30
    p1003_1b.mapped_files: 0

    where my maxusers is set dynamically by the kernel (options MAXUSERS 0
    in the kernel config file iirc), and at boot is set to 256.

    Looking at the amount of ram you have though, be careful not to increase
    the number of file descriptors too much otherwise you'll get a lot of
    swapping out to disk going on.

    In general however check your logfiles to see why so many file
    descriptors are being eaten up. For example I once used cronolog to log
    httpd transfers and errors for around 300 users, and each cronolog instance
    required 2 processes/file descriptors, meaning a total of 1200 file
    descriptors just for logging! The number of file descriptors soon maxed
    out because the available fds wasn't enough.

    Also see the manpage for 'fstat', which tells you about what files are
    currently open on your system.

    HTH,
    Jez
    _______________________________________________
    freebsd-questions@freebsd.org mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-questions
    To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"

  • Next message: Tim Kellers: "Re: OpenOffice.org 1.0.2 and FreeBSD 4.8-RELEASE"