64mb stack size limit?

[Yaraghchi, Stephan]

> -----Original Message-----
> Message: 36
> Date: Fri, 14 May 2004 04:48:31 -0400
> From: "Joseph Gleason" <dot at fireduck.com>
> Subject: 64mb stack size limit?
> To: <freebsd-questions at freebsd.org>
> Message-ID: <000e01c43990$3bf36fe0$08695f0a at frigate>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> Short question:
> Is there a way to increase the stack size limit for a user
> process beyond 64mb?
> 
> Background:
> FreeBSD in question is 5.2.1-RELEASE.
> 
> I am running an application (unison from
> /usr/ports/net/unison).  This program by virtue to how it
> was developed (or possibly the language is uses, that being
> ocaml) uses a large amount of stack space when syncing large
> directory structures.
> 
> With directory structures that contain on the order of
> 30,000 files, unison runs out of stack.
> 
> Using the bash shell:
> ulimit reports a stack limit of 65536k:
> 
> # ulimit -a
> core file size        (blocks, -c) unlimited
> data seg size         (kbytes, -d) 524288
> file size             (blocks, -f) unlimited
> max locked memory     (kbytes, -l) unlimited
> max memory size       (kbytes, -m) unlimited
> open files                    (-n) 11095
> pipe size          (512 bytes, -p) 1
> stack size            (kbytes, -s) 65536
> cpu time             (seconds, -t) unlimited
> max user processes            (-u) 5547
> virtual memory        (kbytes, -v) unlimited
> 
> Doing ulimit -s with a higher value does not seem to produce
> an error or change to this value.
> 
> A little C++ program that I wrote to test stack limits
> confirms the 64mb limit, regardless of what I tell ulimit.
> Source is attached.
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Hi Joseph,

there's a kernel option called 'MAXSSIZ'.
Check /usr/src/sys/i386/conf/LINT for the details...





Mit freundlichen Gruessen / with kind regards


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