Re(2): OpenTransport and OS/X
Re(2): OpenTransport and OS/X
- Subject: Re(2): OpenTransport and OS/X
- From: Jens Bauer <email@hidden>
- Date: Mon, 12 Aug 2002 18:42:38 +0200
Hi Gabriel,
On Tue, 6 Aug, 2002, Gabriel Beauchemin <email@hidden> wrote:
>
> Sounds like you've run across the file descriptor resource limit.
>
> Each OT endpoint consumes a file descriptor, and there's a soft limit
>
> of 255 file descriptors for each process. You can up that limit (to
>
> 10240 for non-privileged processes, and 12288 for privileged
>
> processes) using the setrlimit call. Type "man setrlimit" into
>
> Terminal for more info on this.
>
>
>
> Note this limit is only of concern if you have 255 simultaneous
>
> connections. If you're closing your endpoints properly, this should
>
> clean up the corresponding file descriptors. It could be that you
>
> have a bug in your close path (or you've uncovered a bug in the OT
>
> framework's close path).
>
>
>
BTW, while trying to debug this problem (using CodeWarrior in OS/X) the
>
problem doesn't show up!! The 245th connection is fine (tested with 10k+
>
cycles), and we haven't found a way to reproduce inside the debugger. Is
>
anyone aware of the side effects of using the debugger??
Timing!
You'll very often run into problems debugging network code, because of timing.
>
Anyway, I am adding consoles traces to see if the creation/dispose of the
>
endpoints match up.
I usually go with a log->memory->file, which is written to disk at task-time.
Love,
Jens
--
Jens Bauer, Faster Software.
-Let's make the World better, shall we ?
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