Frank Bures wrote: > Hi, > > I am running spamd with "-m 20" setting, yet I've seen multiple > entries like > these in the logs: > > spamd[3098]: prefork: server reached --max-clients setting, consider > raising > it > > What would be a good number for "-m" on a Quad Opteron server > processing some > 20k messages a day?
A good number for -m is neither a function of CPU power, nor messages/day. It is a function of free memory. run the "free" command. Divide the free memory (on the +buffers/cache line) by the rss of a spamd child from ps aux. Thats the upper limit on how many more spamd's you can run before you start thrashing. I'd not immediately go that far, but keep it in mind as being a ceiling. Also keep in mind that no matter how many spamd's you have, if you get a burst in-rush of mail you'll hit the limit for a short time. You should not have to worry too much about it unless it's happening frequently and spamcs are timing out.
