Re: [PERFORM] How to best use 32 15k.7 300GB drives?

2011-01-30 Thread Віталій Тимчишин
2011/1/28 Scott Carey sc...@richrelevance.com On 1/28/11 9:28 AM, Stephen Frost sfr...@snowman.net wrote: * Scott Marlowe (scott.marl...@gmail.com) wrote: There's nothing wrong with whole table updates as part of an import process, you just have to know to clean up after you're done, and

Re: [PERFORM] pgbench - tps for Postgresql-9.0.2 is more than tps for Postgresql-8.4.1

2011-01-30 Thread Robert Haas
On Thu, Jan 27, 2011 at 2:26 PM, DM dm.a...@gmail.com wrote: Is there anything that i can do to still improve 9.0.2 performance. the performance (tps) that i got is only 10% is it ideal, or should i need to get more? Well, the settings you specified don't sound like the values that we normally

[PERFORM] Any experience using shake defragmenter?

2011-01-30 Thread Mladen Gogala
Did anyone try using shake while the cluster is active? Any problems with corruption or data loss? I ran the thing on my home directory and nothing was broken. I didn't develop any performance test, so cannot vouch for the effectiveness of the procedure. Did anyone play with that? Any positive

Re: [PERFORM] Any experience using shake defragmenter?

2011-01-30 Thread Mark Felder
On Sun, 30 Jan 2011 14:11:51 -0600, Mladen Gogala mladen.gog...@vmsinfo.com wrote: Did anyone try using shake while the cluster is active? Any problems with corruption or data loss? I ran the thing on my home directory and nothing was broken. I didn't develop any performance test, so

Re: [PERFORM] postgres 9 query performance

2011-01-30 Thread Tom Lane
Andres Freund and...@anarazel.de writes: What happens if you change the left join event.origin on event.id = origin.eventid into join event.origin on event.id = origin.eventid ? The EXISTS() requires that origin is not null anyway. (Not sure why the planner doesn't recognize that

Re: [PERFORM] Any experience using shake defragmenter?

2011-01-30 Thread Marcin Mirosław
W dniu 2011-01-30 22:31, Mark Felder pisze: Why do you feel the need to defrag your *nix box? I'm guessing, maybe he used filefrag and saw 3 extents? :) Next question will be which fs do you use? and then flame will start:( Regards -- Sent via pgsql-performance mailing list

Re: [PERFORM] Any experience using shake defragmenter?

2011-01-30 Thread Mladen Gogala
Mark Felder wrote: Why do you feel the need to defrag your *nix box? Let's stick to the original question and leave my motivation for some other time. Have you used the product? If you have, I'd be happy to hear about your experience with it. -- Mladen Gogala Sr. Oracle DBA 1500

Re: [PERFORM] Any experience using shake defragmenter?

2011-01-30 Thread Mladen Gogala
Marcin Mirosław wrote: W dniu 2011-01-30 22:31, Mark Felder pisze: Why do you feel the need to defrag your *nix box? I'm guessing, maybe he used filefrag and saw 3 extents? :) Next question will be which fs do you use? and then flame will start:( Regards With all due respect,