Since some unix filesystem like sun ufs and veritas vxfs now support
direct I/O, from steve adams's site, it seems that using direct I/O is
better than use buffered I/O. For example, i have a system like: 8CPU/8G
mem/2 T3 Raid5/Veritas VXFS. This is an OLTP system, most wait event is
db file sequential read. Which option shall i use? use direct I/O, or
just general buffered I/O?Any one have some experience? And if using
Quick I/O, since it act like raw device,How much memory shall i leave
for the filesystem buffer ?
--
an oracle fan,
an oracle beginner
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Received on Tue Apr 23 2002 - 10:10:03 CDT
