From: Stefan W. <st...@sp...> - 2012-07-25 17:48:43
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Hi! On Wed, Jul 25, 2012 at 10:24:04AM -0700, Han-Wen Nienhuys wrote: > On Wed, Jul 25, 2012 at 9:12 AM, Stefan Westerfeld <st...@sp...> wrote: > > >> Similar results here: > >> > >> [...] > >> > >> Implementing this in FUSE seems like a worthwhile optimization point. > > > > Ok, I'll try to create a patch against FUSE to get this speedup. > > > > What will happen if the FS is accessed from multiple processes running > on different CPUs? The way I think it should work is that the FUSE fs will have different worker threads which are bound to one cpu per thread. If two processes running on cpu 1 and 3 access the filesystem, FUSE should use a worker thread bound to cpu 1 to process requests from the userspace process running on cpu 1 and another worker thread bound to cpu 3 to process requests from the userspace process running on cpu 3. Of course in this case the filesystem worker threads will not fully reside on the same cpu as the userspace processes, so it may not perform as good as in the case I measured with my test. Cu... Stefan -- Stefan Westerfeld, Hamburg/Germany, http://space.twc.de/~stefan |