On Sun, 2005-08-14 at 18:16 +0900, Hiro Yoshioka wrote: > Hi, > > The following is a patch to reduce a cache pollution > of __copy_from_user_ll(). > > When I run simple iozone benchmark to find a performance bottleneck of > the linux kernel, I found that __copy_from_user_ll() spent CPU cycle > most and it did many cache misses.
however... you copy something from userspace... aren't you going to USE it? The non-termoral versions actually throw the data out of the cache... so while this part might be nice, you pay BIG elsewhere.... - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
