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    SubjectRe: fork: Resource temporarily unavailable / cant start new threads
    On Wed, May 21, 2008 at 1:28 PM, Randy Dunlap <randy.dunlap@oracle.com> wrote:
    > On Tue, 20 May 2008 11:26:47 -0700 mark wrote:
    >> I upgraded to 2.6.25.3-18.fc9.x86_64 fedora core 9, now I get this
    >> error when I try to login to the box, kill a pr start a python app, or
    >> do anything on a regular basis.
    >>
    >> fork: Resource temporarily unavailable
    >>
    >> I have over 10GB RAM free, and zero swap spaced used. The box is a
    >> dual quad core Intel Xeon 5405 with 16GB RAM.
    >>
    >> There is no error message in /var/log/messages or dmesg ...
    >> how do I identify the problem?
    >> thanks!
    >>
    >> uname -a
    >> Linux XXX 2.6.25.3-18.fc9.x86_64 #1 SMP Tue May 13 04:54:47 EDT 2008
    >> x86_64 x86_64 x86_64 GNU/Linux
    >>
    >>
    >> free -m
    >> total used free shared buffers cached
    >> Mem: 16086 3189 12896 0 42 666
    >> -/+ buffers/cache: 2481 13605
    >> Swap: 1983 0 1983
    >>
    >>
    >> have only 505 processes running
    >> ps aux | wc -l
    >> 505
    >>
    >>
    >> uptime
    >> 11:24:15 up 39 min, 1 user, load average: 3.54, 3.47, 2.87
    >>
    >> ulimit -a
    >> core file size (blocks, -c) 0
    >> data seg size (kbytes, -d) unlimited
    >> scheduling priority (-e) 0
    >> file size (blocks, -f) unlimited
    >> pending signals (-i) 137216
    >> max locked memory (kbytes, -l) 32
    >> max memory size (kbytes, -m) unlimited
    >> open files (-n) 32768
    >> pipe size (512 bytes, -p) 8
    >> POSIX message queues (bytes, -q) 819200
    >> real-time priority (-r) 0
    >> stack size (kbytes, -s) 10240
    >> cpu time (seconds, -t) unlimited
    >> max user processes (-u) 1024
    >> virtual memory (kbytes, -v) unlimited
    >> file locks (-x) unlimited
    > The only place that fork() returns EAGAIN is for number of
    > processes being >= its limit. Does this user already have >= 1024
    > processes?

    No, it is around 400

    ps ax | wc -l
    417

    I also I increased max process to unlimited, and I still get the error
    randomly..

    ulimit -u
    unlimited

    my webserver is now throwing this error:

    setuid(500) failed (11: Resource temporarily unavailable)


    cat /etc/passwd | grep mark
    mark:x:500:500::/home/mark:/bin/bash

    I also increased this, but still the same error
    kernel.pid_max = 65536


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