[Serusers] Which locking mechanism is useful for usrloc in production environment?
Vaclav Kubart
vaclav.kubart at iptel.org
Fri Feb 2 13:21:14 CET 2007
In my case was the throughput decrease with "fast locking" quite
significant (about 20%).
I will do more tests with final Ottendorf (anybody knows when it will be
released?) and publish results on iptel's web.
Vaclav
On Fri, Feb 02, 2007 at 10:08:21AM +0100, Olaf Bergmann wrote:
> [no crosspost to serdev as I think this is a users' question]
>
> Vaclav Kubart wrote:
>
> > it probably highly depends on your OS and kernel.
>
> True.
>
> We had some trouble using posix semaphores on ia32 with a Debian
> linux and kernel 2.6.18, while the very same seemed to work on an
> ia64 architecture (not sure which kernel version, but might have
> been a 2.6.18 as well).
>
> To me,it seems that the performance penalty from fast locking is
> very small, so this method also qualifies for use in most production
> environments---depending on the size of the user base, of course.
>
> Regards,
> Olaf
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