On Sun, May 25, 2014 at 1:26 PM, Dimitris Karampinas <dkaram...@gmail.com>wrote:
> My deployment is "NUMA-aware". I allocate cores that reside on the same > socket. Once I reach the maximum number of cores, I start allocating cores > from a neighbouring socket. I'm not sure if it solves your issue, but on a NUMA environemnt and recent version of Linux kernel, you should try to disable vm.zone_reclaim_mode, as it seems to cause performance degradation for database workloads, see [1] and [2]. [1] http://www.postgresql.org/message-id/500616cb.3070...@2ndquadrant.com [2] http://frosty-postgres.blogspot.com.br/2012/08/postgresql-numa-and-zone-reclaim-mode.html Best regards, -- Matheus de Oliveira Analista de Banco de Dados Dextra Sistemas - MPS.Br nível F! www.dextra.com.br/postgres
