Greg Smith wrote:
> On Thu, 7 Aug 2008, Cyril SCETBON wrote:
>
>> What's the way to count the read/write bytes of the checkpoint
>> process before 8.3 (no pg_stat_bgwriter view :-[ ) I want to
>> distinguish bytes written by checkpoints and others written by the
>> background process
>
> The reason that view was added was because it's really hard to figure
> that out in earlier versions. Theoretically you could have some
> operating system level program that tracked I/O on a per-process
> basis, noting which one was the background writer process and counting
> those separately. I found it easier to work on adding the counters
> instead.
>
> It's not really complete, but I did have a functional prototype of a
> pg_stat_bgwriter implementation that worked against 8.2 if that helps
> you any: http://www.westnet.com/~gsmith/content/postgresql/perfmon82.htm
a really great job greg. I'll test it.
Thanks
>
> --
> * Greg Smith gsmith@gregsmith.com http://www.gregsmith.com Baltimore, MD
>
--
Cyril SCETBON
