Re: why we need both the collector & buffer process

=?gb2312?q?William.Jiang?= wrote:
>
> hi,all hackers of postgres
>
> when postmaster start as a service . another two
> processes(collector & buffer ) start their work at the same
> time.
>
> I have read the code and I am wondering why we need two
> processes to do the work. I think one process can work as
> well. Are there something special you considered when you
> developed this feature?

One collects statistics for the pg_stat tables, and the other does
checkpoints. They are different functions.

--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073