On Mon, 14 Sep 2015 22:31:42 +0300 Ebru Akagunduz <ebru.akagunduz@xxxxxxxxx> wrote: > This patch series makes swapin readahead up to a > certain number to gain more thp performance and adds > tracepoint for khugepaged_scan_pmd, collapse_huge_page, > __collapse_huge_page_isolate. I'll merge this series for testing. Hopefully Andrea and/or Hugh will find time for a quality think about the issue before 4.3 comes around. It would be much better if we didn't have that sysfs knob - make the control automatic in some fashion. If we can't think of a way of doing that then at least let's document max_ptes_swap very carefully. Explain to our users what it does, why they should care about it, how they should set about determining (ie: measuring) its effect upon their workloads. -- 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>