Re: max arguments for exec

Kiril Vidimce (
Wed, 26 Sep 2001 20:23:24 -0700

On Thu, 27 Sep 2001, Keith Owens wrote:
> On Wed, 26 Sep 2001 14:25:05 -0700 (PDT),
> Kiril Vidimce <> wrote:
> >Is there any way to reconfigure the kernel at runtime to change the
> >limit for arguments passed during an exec? I guess I am looking for
> >something similar to systune ncargs under IRIX. I found this thread
> >in the archives:
> >
> >
> >
> >The only suggestion was to patch and recompile the kernel. I looked
> >into sysctl and I couldn't find an appropriate argument to tweak.
> It is controlled by MAX_ARG_PAGES in include/linux/binfmts.h. Change
> and recompile the kernel, it is not dynamically tunable in Linux.

Yeah, I know, but we would like to avoid building a custom kernel.
If we do end up going this route, I wonder if there is a limit for
MAX_ARG_PAGES. Any idea? I think 128 pages (512K) would be sufficient
for our needs.


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