Re: [PERFORM] Performance degrade running on multicore computer

2009-11-23 Thread Dave Youatt
On 01/-10/-28163 11:59 AM, afancy wrote: > Hi, > > My PostgreSQL server has two CPUs (OS: Fedora 11), each with 4 cores. > Total is 8cores. Now I have several clients running at the same time > to do insert and update on the same table, each client having its own > connection. I have made two te

Re: [PERFORM] Performance degrade running on multicore computer

2009-11-22 Thread afancy
Hi, I am using the PostgreSQL 8.4. What is the code path? After a row is inserted to the table, it will update the fields of "validfrom", and "validto". Followings are the table structure, data, and the performance data: xiliu=# \d page Table "pyetlexa.page" Column |

Re: [PERFORM] Performance degrade running on multicore computer

2009-11-21 Thread Tom Lane
afancy writes: > My PostgreSQL server has two CPUs (OS: Fedora 11), each with 4 cores. Total > is 8cores. Now I have several clients running at the same time to do insert > and update on the same table, each client having its own connection. I have > made two testing with clients running in pa

[PERFORM] Performance degrade running on multicore computer

2009-11-21 Thread afancy
Hi, My PostgreSQL server has two CPUs (OS: Fedora 11), each with 4 cores. Total is 8cores. Now I have several clients running at the same time to do insert and update on the same table, each client having its own connection. I have made two testing with clients running in parallel to load 20M