Re: DB Performance

The first step definitely would have to split of the DB server.

Secondly u shud check the application part, is it some specific
queries that take too much time? in that case consider optimising
the queries.

to identify the slow queries you could use pg_stat_activity view
for log the time of various queries.

Also make sure that regualr mantainece task like VACUUM ANALYZE are
run on periodic basis.

Lastly you could pump in lots of RAM , SCSI RAID5 and Xeons ;-)
into the new m/c

Also such question shud be asked in performance list .

Regds
Mallah.

> I need to find a way to increase performance on my server.
>
> We are currently using postgres as a back-end to our web-based
> corporate wide application. The application is used for everything from collecting large
> amount of data, updating current data and
> creating large reports based on this data. At this point we have
> about 3000 users on the system and this is going to grow rapidly.
>
>
> We are running apache, mod-perl, sendmail, and postgres on our
> server. The machine is a dual 900Mhz processor with 2 gigs of ram, and fast 10k raid drives.
>
> I have set the shared memory on the machine to 512MB.
>
> Postgres is configured as follows:
>
> sort_mem = 128672
> shared_buffers = 60800
> fsync = false
>
>
> We will be purchasing new machines to split off the web server from the database server.
>
> What else can I do to help performance?
> Will a beowulf cluster help to increase performance?
>
> Any suggestions would be greatly appreciated.
>
> Thanks,
>
> Gary
> Gary DeSorbo
> isasitis(at)uchicago(dot)edu
> Cell: 415.606.3857
>
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