Re: Instrument checkpoint sync calls

So my task list is:

0) Rebase against the HEAD that just code related to this touched today

1) Assume that log_checkpoints is sufficient control over whether the 
timing overhead added is worth collecting, and therefore remove the 
half-baked idea of also wrapping with a compile-time option.

2) Have the sync summary returned upwards, so it can be put onto the 
same line as the rest of the rest of the log_checkpoint info.

All seems reasonable to me.  Will rev a new patch by tomorrow.

-- 
Greg Smith   2ndQuadrant US    greg@2ndQuadrant.com   Baltimore, MD
PostgreSQL Training, Services and Support        www.2ndQuadrant.us