On 10/22/2014 01:56 AM, Peter Zijlstra wrote: > On Tue, Oct 21, 2014 at 08:09:48PM +0300, Kirill A. Shutemov wrote: >> It would be interesting to see if the patchset affects non-condended case. >> Like a one-threaded workload. > > It does, and not in a good way, I'll have to look at that... :/
Maybe it is blamed to find_vma_srcu() that it doesn't take the advantage of the vmacache_find() and cause more cache-misses. Is it hard to use the vmacache in the find_vma_srcu()? > > Performance counter stats for './multi-fault 1' (5 runs): > > 73,860,251 page-faults > ( +- 0.28% ) > 40,914 cache-misses > ( +- 41.26% ) > > 60.001484913 seconds time elapsed > ( +- 0.00% ) > > > Performance counter stats for './multi-fault 1' (5 runs): > > 70,700,838 page-faults > ( +- 0.03% ) > 31,466 cache-misses > ( +- 8.62% ) > > 60.001753906 seconds time elapsed > ( +- 0.00% ) > . > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
