Re: [HACKERS] [Pgsphere-dev] GIST index concurrency concern

2004-11-13 Thread Chris Albertson
I expect my site to sustain something around 1000-3000 new user acquisitions per day, all of which will account for an insert into 3 GIST indices. Most people when they talk about a large load on a DBMS system talk about transactins per second. As in 100 per second Even if we only

Re: [HACKERS] [Pgsphere-dev] GIST index concurrency concern

2004-11-13 Thread Patrick Clery
Oleg, Daniel and I have both been collaborating on this structure for a while now. We are aware that GiST reads work very fast. But won't they be paralyzed when there are writes? Both of us are working on dating sites, and the main problem that concerns us is a very heavy traffic load. At this

Re: [HACKERS] [Pgsphere-dev] GIST index concurrency concern

2004-11-10 Thread Oleg Bartunov
Patrick, you didn't say us about your setup. Have you proved you've seen locking issue for reading ? Are you sure you have no any locks in your code ? Any tests demonstrated your problem would be great. Oleg On Tue, 9 Nov 2004, Patrick Clery wrote: Oleg, Daniel and I have both been

Re: [HACKERS] [Pgsphere-dev] GIST index concurrency concern

2004-11-09 Thread Oleg Bartunov
Daniel, concurrency is a big issue of current implementation of GiST. But it should don't bite you for READ ops ! -hackers mailing list is a very relevant mailing list for GiST discussions. It's pity we several times claimed to work on GiST concurrency and recovery, but never got a chance :) I