Re: [HACKERS] to enable O_DIRECT within postgresql

2010-06-20 Thread Daniel Ng
Greg: Thank you very much for your insightful comments on the performance of direct io applied to postgres! That inspired me a lot. Tom: thank you for the reference to man page! On Fri, Jun 18, 2010 at 2:02 AM, Greg Smith wrote: > Daniel Ng wrote: > >> I am trying to enable the d

[HACKERS] to enable O_DIRECT within postgresql

2010-06-15 Thread Daniel Ng
Dear all, I am trying to enable the direct IO for the disk-resident hash partitions of hashjoin in postgresql. The basic postgres environment settings are: centos 5.5 kernel 2.6.18 ext3 fs PostgreSQL 8.4.3 Previously I added the O_DIRECT flag to the "fileF