On Tue, Oct 10, 2017 at 01:40:07PM -0700, pinker wrote: > Hi to all! > > We've got problem with a very serious repetitive incident on our core > system. Namely, cpu load spikes to 300-400 and the whole db becomes > unresponsive. From db point of view nothing special is happening, memory > looks fine, disks io's are ok and the only problem is huge cpu load. Kernel > parameters that are increasing with load are always the same: > * disabled transparent huge pages (they were set before unfortunately to > 'always') Did you also try disabling KSM ? echo 2 |sudo tee /sys/kernel/mm/ksm/run I believe for us that was affecting a postgres VM(QEMU/KVM) and maybe not postgres itself. Worth a try ? https://www.postgresql.org/message-id/20170718180152.GE17566%40telsasoft.com Justin -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
