On Thu, Oct 08 2009, Nick Piggin wrote: > This is actualy nice too. My tests were on a 2s8c Barcelona system, > but this is showing we have a nice serial win on Nehalem as well. > Actually K8 CPUs have a bit faster lock primitives than earlier > Intel CPUs I think (closer to Nehalem), so we might see an even > bigger win with a Core2. Ran it on another box. This isn't quite a core 2 though, it's a sparc64 (Niagara 2). It has 64 threads, too, but just 8 cores. 2.6.32-rc3 serial real 0m5.390s user 0m1.340s sys 0m2.970s 2.6.32-rc3 parallel real 0m2.009s user 0m0.900s sys 0m2.490s vfs serial real 0m4.816s user 0m1.250s sys 0m2.270s vfs parallel real 0m1.967s user 0m0.920s sys 0m1.960s So it's a win-win there on that platform too. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
