From: "Bob Elzer" > What about a large database, maybe a couple of terabytes, and maybe > lots of users. And then let's say we spread our 6G of swap over > several disks. Maybe a system with 32GB of memory, and quad > processors. Maybe we could run some tests, anybody have a system > like this? Lessee. Not quite, but: Master DB server over here is 4-CPU, 16G RAM, has ~90G of junk in InnoDB and MyISAM tables, has hardRAID-5, and swap usage is currently roughly constant at 20M. We aren't Amazon or NewEgg, but we get a constant flow of insert/update/delete statements. 200-300 queries/second, mostly. Similar stats on the read-only slaves, which have practically identical hardware specs. When things are working like they should be, swap usage is minimal. I've commented out the swap lines in fstab on a few machines, and seen no problems in those swapless machines. Occasionally, I've seen the Apache boxes hit swap heavily, fall over, and barf, but that's been a lot less common since we changed a few things early this year. YMMV, obviously. -- Matt G / Dances With Crows The Crow202 Blog: http://crow202.org/wordpress/ There is no Darkness in Eternity/But only Light too dim for us to see --------------------------------------------------- PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us To subscribe, unsubscribe, or to change your mail settings: http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss