Tom, Bruce,

> My previous point about checking different fsync spacings corresponds to
> different assumptions about average transaction size.  I think a useful
> tool for determining wal_sync_method has got to be able to reflect that
> range of possibilities.

Questions:
1) This is an OSS project.   Why not just recruit a bunch of people on 
PERFORMANCE and GENERAL to test the 4 different synch methods using real 
databases?   No test like reality, I say ....

2) Won't Jan's work on 7.5 memory and I/O management mean that we have to 
re-evaluate synching anyway?

-- 
-Josh Berkus
 Aglio Database Solutions
 San Francisco


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