Re: running out of file descriptors

[Bryan Christ <bryan.christ@gmail.com>]

I pretty sure you can just echo to /proc/sys/fs/file-nr to set that
value (which already seems really high at 560178).  I doubt I'm
exhausting 560178 descriptors.

On Mon, Feb 16, 2009 at 7:01 AM, Eric Bambach <bot403@cisu.net> wrote:
> On Monday 16 February 2009 01:09:42 Bryan Christ wrote:
>> On Mon, Feb 16, 2009 at 12:18 AM, Joe Damato <ice799@gmail.com> wrote:
>> > On Sun, Feb 15, 2009 at 9:48 PM, Bryan Christ <bryan.christ@gmail.com>
> wrote:
>> >> I am writing a multi-threaded application which services hundreds of
>> >> remote connections for data transfer.  Several instances of this
>> >> program are run simultaneously.  The problem is that whenever the
>> >> total number of active user connections (cumulative total of all open
>> >> sockets tallied from all process instances) reaches about 700 the
>>
>> It seems that would be the same as setting RLIMIT_NOFILE via
>> setrlimt() or the same as using the userspace tool "ulimit -n".  Am I
>> wrong?  Isn't this the same?
>>
>> >> system appears to run out of file descriptors.  I have tried raising
>> >> the open files limit via "ulimit -n" and by using the setrlimit()
>> >> facility.  Neither of these seem to help.  I am currently having to
>> >> limit the number of processes running on the system to 2 instances
>> >> allowing no more than 256 connections each.
>> >
>> > Have you tried editing /etc/security/limits.conf  (or equivalent file
>> > on your system) to increase the max number of open files?
>> >
>> > perhaps something like:
>> > *              -       nofile         524288
>> >
>> > is what you want?
>> >
>> > joe
>
> The solution used to be editing the kernel and tuning NR_OPEN and NR_FILE in
>
>  /your/kernel/source/include/linux/fs.h
>
> The kernel used to have an absolute hard limit that setrlimit and ulimit
> couldn't go past but I'm not sure if this has changed.
>
> You could try bumping those up and recompiling or at least googling along
> those lines.
>



-- 
Bryan
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