Re: [PERFORM] Performance Benchmarking for data-warehousing instance?

2014-02-07 Thread Huy Nguyen
Do you happen to have a link to it? Though I think different machine specs should yield different optimal postgresql.conf. I'm looking for a hand-crafted set of data + queries tailored for OLAP so that I can try to manually tweak one config at a time and run against the benchmark. I might conside

Re: [PERFORM] Performance Benchmarking for data-warehousing instance?

2014-02-07 Thread Peter Geoghegan
On Fri, Feb 7, 2014 at 7:36 PM, Huy Nguyen wrote: > I think pgtune is optimized more for OLTP application. Is there something > similar to pgtune/pgbench for OLAP? IIRC pgtune can be told to give out an OLAP-optimized postgresql.conf. Maybe that's only recent versions? -- Regards, Peter Geogheg

[PERFORM] Performance Benchmarking for data-warehousing instance?

2014-02-07 Thread Huy Nguyen
We're using PostgreSQL to host our analytics (OLAP) database and trying to tune our configuration for better performance. Is there any existing PG performance benchmarking tool set that tailors for OLAP purpose? Right now what we do is just go through the list of documentations I think pgtune is

[PERFORM] Bloated tables and why is vacuum full the only option

2014-02-07 Thread Claudio Freire
Hello list. I know all the theory about vacuuming. I've got log tables that get periodically pruned. The pruning is... quirky, though. It's not so much deleting data, as summarizing many (thousands) of rows into one single row. For that, a combination of deletes and updates are used. In essence,