It sounds like you haven't done much work tuning your postgresql.conf file. If that is the case, then I suggest you read the following and follow the steps they recommend.
http://revsys.com/writings/postgresql-performance.html http://www.postgresql.org/docs/current/static/performance-tips.html http://www.powerpostgresql.com/Docs Finally, if you still have performance issues, please try the pgsql-performance mailing list. http://archives.postgresql.org/pgsql-performance/ Once you have the basic performance tuning ironed out, it might make sense to come back to this list if you have slony specific performance questions. Andrew On 2/27/07, G Muniswamy <[EMAIL PROTECTED]> wrote: > Dear Andreas > > We have around 15-20 big table tables, each has around more than 2000 > rows in that tables.We need to set any parameter in postgresql.conf file > or > Parameter needs to set for the slony. > > > Best regards, > > g.Muniswamy > > > -----Original Message----- > From: Andreas Kostyrka [mailto:[EMAIL PROTECTED] > Sent: Tuesday, February 27, 2007 3:38 PM > To: G Muniswamy > Cc: [email protected] > Subject: Re: [Slony1-general] Slave system becomes Slow > > Just out of curiosity, how many rows are touched by the updates on the > master? > > One important thing is: > > select count(*) from tablea => 1000 > update tablea set fieldb=fieldb + 1 => 1 update statement on master, > => BUT 1000 updates on slave > > So it's easy to overwhelm a slony system with one statement that > touches many rows. > > Andreas > > -- > This message has been scanned for viruses and > dangerous content by OpenProtect(http://www.openprotect.com), and is > believed to be clean. > > > -- > This message has been scanned for viruses and > dangerous content by OpenProtect(http://www.openprotect.com), and is > believed to be clean. > > _______________________________________________ > Slony1-general mailing list > [email protected] > http://gborg.postgresql.org/mailman/listinfo/slony1-general > _______________________________________________ Slony1-general mailing list [email protected] http://gborg.postgresql.org/mailman/listinfo/slony1-general
