OK, that mean if you want to increase your mail system size, you add more computers (horizontal growth) better
than to add more CPU's in a single computer (vertical growth).
Regards
Phil Pennock wrote:
> On 2001-04-10 at 19:21 +0200, Pedro Crespo gifted us with:
> > Does anybody know if Exim is multithreading? I mean if it takes
>
> Yes, many people know.
>
> No, exim is not multithreaded.
>
> > adventages of multiproccessor systems.
>
> With an MTA, CPU speed is not the bottleneck, unless perhaps you're
> using a large amount of virus scanning. In which case, Exim sits on one
> CPU and the virus scans are in other processes, so the OS takes care of
> the multi-tasking automatically.
>
> Save the money of dual-CPU. Spend it on RAM and a better disk system.
> These will reap much larger dividends.
>
> Besides, almost every threading system I've seen has been a flakey piece
> of garbage. It's POSIX's fault -- insisting on something which could
> be implemented entirely in userland, so as not to antagonise the slower
> systems developers. So the threads stuff tries to play clever tricks
> with wrappers around blocking system calls, which then breaks when
> somebody sneezes.
>
> Solaris native threads are okay.
> --
> There are two major products that come out of Berkeley: LSD and UNIX.
> We don't believe this to be a coincidence. -- Jeremy S. Anderson
>
> --
> ## List details at http://www.exim.org/mailman/listinfo/exim-users Exim details at http://www.exim.org/ ##
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