On Wed, Feb 25, 2009 at 3:35 PM, Scott Marlowe <scott.marl...@gmail.com>wrote:
> On Wed, Feb 25, 2009 at 2:32 PM, Farhan Husain <russ...@gmail.com> wrote: > > > > On Wed, Feb 25, 2009 at 3:30 PM, Robert Haas <robertmh...@gmail.com> > wrote: > >> > >> On Wed, Feb 25, 2009 at 3:44 PM, Farhan Husain <russ...@gmail.com> > wrote: > >> > Initially, it was the default value (32MB). Later I played with that > >> > value > >> > thinking that it might improve the performance. But all the values > >> > resulted > >> > in same amount of time. > >> > >> Well, if you set it back to what we consider to be a reasonable value, > >> rerun EXPLAIN ANALYZE, and post that plan, it might help us tell you > >> what to do next. > >> > >> ...Robert > > > > Right now I am running the query again with 32MB work_mem. It is taking a > > long time as before. However, I have kept the following values unchanged: > > > > shared_buffers = 32MB # min 128kB or > max_connections*16kB > > That's REALLY small for pgsql. Assuming your machine has at least 1G > of ram, I'd set it to 128M to 256M as a minimum. > As I wrote in a previous email, I had the value set to 1792MB (the highest I could set) and had the same execution time. This value is not helping me to bring down the execution time. -- Mohammad Farhan Husain Research Assistant Department of Computer Science Erik Jonsson School of Engineering and Computer Science University of Texas at Dallas
