On Tue 10-09-19 11:37:19, Stefan Priebe - Profihost AG wrote: > > Am 10.09.19 um 11:02 schrieb Michal Hocko: > > On Tue 10-09-19 10:38:25, Stefan Priebe - Profihost AG wrote: [...] > >> /sys/kernel/mm/transparent_hugepage/defrag:always defer [defer+madvise] > >> madvise never [...] > > Many processes hitting the reclaim are php5 others I cannot say because > > their cmd is not reflected in the trace. I suspect those are using > > madvise. I haven't really seen kcompactd interfering much. That would > > suggest using defer. > > You mean i should set transparent_hugepage to defer? Let's try with 5.3 without any changes first and then if the problem is still reproducible then limit the THP load by setting transparent_hugepage to defer. -- Michal Hocko SUSE Labs
