On Fri, 1 Aug 2008, Alvaro Herrera wrote:
Sounds like the thing to do would be to pass CheckpointStats into the DONE probe.
I thought it would be more useful to demarcate where the two phases of the checkpoint process were at clearly--the actual times themselves are helpful but dtrace can do more than that. The write and sync phases have very different I/O characteristics, and it really should be easy for people to analyze them independantly. I'm not familiar enough with dtrace to know if that's easy with the patch as it stands, I think there needs to be another probe in the middle there to make that straightforward.
-- * Greg Smith [EMAIL PROTECTED] http://www.gregsmith.com Baltimore, MD -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
