Re: pid_t range question

[Herbert Poetzl <herbert@13thfloor.at>]

On Fri, Feb 17, 2006 at 02:39:55PM -0700, Eric W. Biederman wrote:
> David Lang <dlang@digitalinsight.com> writes:
> 
> > I agree that the mojority of users don't hit this limit, but I've
> > got a couple of boxes that push it (they run out of ram before that,
> > but more ram is on order).
> >
> > however it sounds like switching to a 64 bit kernel will avoid this
> > limit, so I'll put my efforts into configuring a box to do that.
>
> That is what I would recommend. Unless you do something weird an
> painful like configure a kernel doing the 4G/4G split a 32bit box is
> going to have memory problems with more than 32K tasks.

or configure the newly introduced 2.13/1.87 (or 1/3 split)

I don't think low memory is really the issue here, the
scheduling of 32k+ tasks is much more a problem ...

best,
Herbert

> Just remember you need push up /proc/sys/kernel/pid-max to raise the
> default on a 64bit box.
> 
> Eric
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