Thanks Maurizio. I will review the links you have posted.
I wanted to raise this question to everyone. It seems to me that ns_thread
wait and join have the same functionality. If that is the case, why the
insistence of defining the 'wait' command?
On Thursday, June 21, 2012 10:13:47 PM UTC+8, Maurizio Martignano wrote:
>
> Dear Sep Ng,
>
> Memory leaks do exist in the majority of Web Servers
> (Aolserver included). This is a sad fact. Instead of trying to fix these
> leaks a better and cheaper strategy could be to have a daily restart of
> your web/application server.
>
>
>
> In case you need continuous operation, you can set up a cluster of
> web/application servers where each one of them does a restart every now and
> then to cope with the memory leaks, in any case the cluster never stops
> being available.
>
>
>
> I created several installations of this type, see for instance:
>
>
> http://www.spazioit.com/pages_en/sol_inf_en/distributed-sandbox-for-application-servers_en/
>
>
>
> Another need, which now unfortunately emerged in my area is the
> requirement to have redundant installations, capable of resisting to
> catastrophic events. You can find something about this in here:
>
> http://www.spazioit.com/pages_en/sol_inf_en/disaster_recovery_solutions_en/
>
>
>
> I hope you find this information useful.
>
>
>
> Ciao,
>
> Maurizio
>
>
>
>
>
> *From:* Sep Ng
> *Sent:* 21 June 2012 03:10
> *To:* aolser...@googlegroups.com
> *Subject:* [AOLSERVER] pthreads and AOLserver
>
>
>
> I've been poking around with how AOLserver handles ns_threads and wanted
> to raise the questions pertaining to memory leaks.
> From the pthread_create man page...
>
> A thread may either be *joinable* or *detached*. If a thread is joinable,
> then
>
> another thread can call pthread_join(3)
> <http://www.kernel.org/doc/man-pages/online/pages/man3/pthread_join.3.html>
> to wait for the thread to terminate
>
> and fetch its exit status. *Only when a terminated joinable thread
> has been*
>
> * joined are the last of its resources released back to the system.*
>
>
> Does this mean that if I don't use ns_thread join, the resources and tcl
> interpreter of the thread spawned by ns_thread begin will not get released?
>
> If someone would kindly definitively answer this for me, that would be
> well appreciated.
>
> Regards.
>
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