> > WinXP fsync = true 20-28 tps > > WinXP fsync = false 600 tps > > Linux fsync = true 800 tps > > Linux fsync = false 980 tps > > Wow, that's terrible on Windows. If there's a solution, it'd be nice to > backport it... >
there is. I just rigged up a test benchmark comparing sync methods. I ran on 2 boxes, my xp workstation on 10k raptor and a win2k server on 3ware raid 5 (also on 10k raptors). Workstation: did 1000 FILE_FLAG_WRITE_THROUGH | FILE_FLAG_NO_BUFFERING writes in 5.729633 seconds did 1000 FILE_FLAG_WRITE_THROUGH writes in 0.593322 seconds did 1000 flushfilebuffers writes in 15.898989 seconds server: did 1000 FILE_FLAG_WRITE_THROUGH | FILE_FLAG_NO_BUFFERING writes in 16.501076 seconds did 1000 FILE_FLAG_WRITE_THROUGH writes in 16.104133 seconds did 1000 flushfilebuffers writes in 18.962439 seconds server after running super altra secret dskcache '+p' mode: did 1000 FILE_FLAG_WRITE_THROUGH | FILE_FLAG_NO_BUFFERING writes in 0.256574 seconds did 1000 FILE_FLAG_WRITE_THROUGH writes in 2.627602 seconds did 1000 flushfilebuffers writes in 15.290967 seconds dskcache.exe is required to enable power protect mode (unbypassing raid conttoller write cache settings) on win2k. enjoy. Merlin ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
