Milter-greylist

Hi,

thanks for your response, I think this might well fix the issue. I'll
try reducing the stack size and see how it goes.

Thanks again,

Mark Reynolds
--- In milter-greylist@yahoogroups.com, Johann Klasek <johann@...> wrote:
>
> On Wed, Sep 26, 2007 at 10:14:10AM -0000, marknreynolds wrote:
> [..]
> > 
> > I am not a programmer, however I have been logging the number of
> > threads milter-greylist is creating and have seen it go up to 290. If
> > I run pmap on the process I can see each thread is taking 8M of memory
> > so by the time I multiply 8M by 290 and add on the size of the
> > greylist database (around 300MB) I am starting to approach 3GB which I
> > believe is the limit for user space memory within a process. 
> > 
> > I am currently waiting for the next errors so I can confirm how many
> > threads were open at the time.
> > 
> > Have I hit a physical limit or is there any tuning I can carry out to
> > prevent the problem re-occuring?
> 
> I had a similar problem (in some other context). Running a system with
> Linux FC5 I saw an overall consumption of at least 10M for each thread,
> filling up the virtual memory of the thread container process which is
> limited to 3 (or 2?) GB. Some investigation showed that the default
> process stacksize is taken for each(!) new thread ... Now I have limited
> the stack size in the init script using
> 
> ulimit -s 256
> 
> to 256 KB which worked for me (e.g. Solaris is not that wastful in
> stack usage for threads).
> 
> 
> Johann
>