On 18 Mar, Tom Lane wrote: > Josh Berkus <[EMAIL PROTECTED]> writes: >> 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 .... > > I agree --- that is likely to yield *far* more useful results than > any standalone test program, for the purpose of finding out what > wal_sync_method to use in real databases. However, there's a second > issue here: we would like to move sync/checkpoint responsibility into > the bgwriter, and that requires knowing whether it's valid to let one > process fsync on behalf of writes that were done by other processes. > That's got nothing to do with WAL sync performance. I think that it > would be sensible to make a test program that focuses on this one > specific question. (There has been some handwaving to the effect that > everybody knows this is safe on Unixen, but I question whether the > handwavers have seen the internals of HPUX or AIX for instance; and > besides we need to worry about Windows now.)
I could certainly do some testing if you want to see how DBT-2 does. Just tell me what to do. ;) Mark ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster
