On 2015-03-05 18:01:08 +0100, Vlastimil Babka wrote: > On 03/05/2015 05:52 PM, Andres Freund wrote: > > What exactly counts as "recent" in this context? Most of the bigger > > installations where we found THP to be absolutely prohibitive (slowdowns > > on the order of a magnitude, huge latency spikes) unfortunately run > > quite old kernels... I guess 3.11 does *not* count :/? That'd be a > > Yeah that's too old :/
Guessed so. > I also noticed that you now support hugetlbfs. That could be also interesting > data point, if the hugetlbfs usage helped because THP code wouldn't > trigger. Well, mmap(MAP_HUGETLB), but yea. Will let you know once I know whether it's possible to get a newer kernel. Greetings, Andres Freund -- Andres Freund http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
