Weird Memleak problem

[Maxim Dounin]

Hello!

On Mon, Aug 31, 2009 at 06:10:16PM -0400, Paul wrote:

> Oh I also notice another issue, when ram usage is high like this, when i  
> reload nginx it does this:
> root      5776  0.0  0.1  19528  4876 ?        Ss   Aug30   0:00 nginx:  
> master process /usr/local/nginx/sbin/nginx -c conf/ng1.conf
> www       5777  2.3  2.3 184060 94364 ?        S    Aug30  28:53 nginx:  
> worker process is shutting down
> www       5778  2.3  2.3 315500 95496 ?        S    Aug30  29:23 nginx:  

[...]

> and the processes stay in 'process is shutting down' for a LONG time..  
> I've waited quite a while before
> doing a restart instead of reload to clear them out.   Not sure what  
> would cause this?
> Most of my connection timeouts are set between 60-120seconds. Except SSL  
> session one is 10m, but i've waited
> hours for the old processes to shut down.

nginx worker processes wait for all currently processed requests 
to finish before exiting.  It can take hours if there are active 
but slow requests or requests with big responses.

You may use normal network diagnostic tools (netstat, tcpdump, 
...) to see what actually happens on the wire.

Maxim Dounin