On Mon, Nov 1, 2010 at 14:49, Divakar Singh <dpsmails@xxxxxxxxx> wrote: > I am trying to tune my libpq program for insert performance. > When I tried inserting 1M rows into a table with a Primary Key, it took > almost 62 seconds. > After adding a composite index of 2 columns, the performance degrades to 125 > seconds. This sounds a lot like the bottleneck I was hitting. What Linux kernel version are you running? If it's 2.6.33 or later, see: http://wiki.postgresql.org/wiki/Tuning_Your_PostgreSQL_Server#wal_sync_method_wal_buffers http://archives.postgresql.org/pgsql-performance/2010-10/msg00602.php Regards, Marti -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
