[Mailman-Developers] locking and big lists

Brad Knowles brad at stop.mail-abuse.org
Thu Oct 28 16:01:03 CEST 2004

At 3:12 PM +0200 2004-10-28, Fil wrote:

>  As I have a very big server (4 CPUs, 6Gbytes of RAM), I suppose that only a
>  MySQL-backed Mailman would answer this problem. How far is it from being
>  usable?

	For a large-scale mail system, number and speed of CPUs is 
meaningless.  Amount of RAM doesn't really mean a whole lot.  What 
you need is disk I/O capacity.

	Have you put your entire spool filesystem on solid-state disk, or 
at least very high capacity multi-spindle RAID 1+0 arrays with high 
speed battery-backed controllers with large quantities of write-back 

	See also 
as one of many items in the Mailman FAQ that discuss "performance". 
Of course, you should also see the others, too.

Brad Knowles, <brad at stop.mail-abuse.org>

"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."

     -- Benjamin Franklin (1706-1790), reply of the Pennsylvania
     Assembly to the Governor, November 11, 1755

   SAGE member since 1995.  See <http://www.sage.org/> for more info.

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