IIRC, previous versions of postgresql (< 8.0) did not correctly sync disks when running on Cygwin. I'm not 100% sure, can someone confirm? 8.0 does, and I beleive it does both under native win32 and cygwin.
yes, sync is a NOOP on cygwin.
It's been my experience that the native version is slightly faster than the cygwin one, but I've only compared 8.0 to 8.0.
Sure. This is expected. Cygwin's interim's layer costs a lot of time. (process handling, path resolution)
--
Reini Urban
http://xarch.tu-graz.ac.at/home/rurban/
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