On Thu, Oct 21, 2010 at 8:15 PM, Andrew Reid <[email protected]> wrote: > But I'm curious if anyone on the list knows the rationale for > distributing kernels with this set to 32. Is that just a > reasonable number that's never been updated? Or is there some > complication that arises after 32 cores, and should I be more > careful about tuning other parameters?
I've always set the number of cores to exactly how many I have x2 when I roll my own, which on my puny systems is either 4 or 8. I seem to recall reading that there is a slight performance hit for every core you support. Or was it memory hit? Or was that a bong hit I'm thinking of? I really can't remember, but I think it was in Greg's "Linux Kernel In A Nutshell" book, by O'Reilly, though free to download. This exchange seems appropriate now... Peter Griffin: "It's true. I read it in a book somewhere" Brian Griffin: "Are you sure it was a book? Are you sure it wasn't... nothing?" -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
