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. > Is it hard to use the vmacache in the find_vma_srcu()? I've not had time to look at it. -- 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/
