Re: Octave sleeps with 2000 tmp files :(

[Jon Davis]

        I've seen a (non octave) situation where gnuplot seemed to
queue print commands, and presumably would keep the file descriptor
open. The hack that cured that was to issue a gnuplot command that
set a different terminal type. It seemed to flush the queue then.

        --Jon

address@hidden   ---  Jon H. Davis
On Fri, 12 Apr 2002, John W. Eaton wrote:

> On 12-Apr-2002, Ana O'Lyric <address@hidden> wrote:
>
> | I have faced the following problem:
> | In Octave, I am running a program that
> | makes a lot of figures in a cycle.
> | I have found that as soon as the number
> | of tmp files reaches approximately 2045
> | or so, Octave ``falls asleep.''
> | It just stops doing anything!
> | It even doesn't occupy the CPU.
> | Is there anything that can be done to fix
> | this problem except for giving
> | purge_tmp_files? (It works too fast deleting
> | necessary tmp data before gnuplot managed
> | to plot them.)
>
> Octave places no limit on the number of open files, but your OS or
> shell might.  For example, on my system:
>
>   $ ulimit -a
>   core file size        (blocks, -c) 0
>   data seg size         (kbytes, -d) unlimited
>   file size             (blocks, -f) unlimited
>   max locked memory     (kbytes, -l) unlimited
>   max memory size       (kbytes, -m) unlimited
>   open files                    (-n) 1024
>   pipe size          (512 bytes, -p) 8
>   stack size            (kbytes, -s) 8192
>   cpu time             (seconds, -t) unlimited
>   max user processes            (-u) 256
>   virtual memory        (kbytes, -v) unlimited
>   $ ulimit -n unlimited
>   bash: ulimit: cannot modify open files limit: Operation not permitted
>
> Still, I'm not sure why your Octave process is stopping without any
> messages when you (apparently) reach a limit on open files.  Octave
> should open the plot files, write the data and close them.  I'm not
> sure what gnuplot does.
>
> Can you submit a complete bug report to the bug-octave mailing list
> that demonstrates the problem?
>
> Thanks,
>
> jwe
>
>
>
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Octave is freely available under the terms of the GNU GPL.

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