* Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > On Thu, Oct 23, 2014 at 06:40:05PM +0800, Lai Jiangshan wrote: > > 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. > > Its what I thought initially, I tried doing perf record with and > without, but then I ran into perf diff not quite working for me and I've > yet to find time to kick that thing into shape. Might be the 'perf diff' regression fixed by this: 9ab1f50876db perf diff: Add missing hists__init() call at tool start I just pushed it out into tip:master. Thanks, Ingo -- 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>