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, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>