Message-Id: <10556.111882@fatcity.com> From: Gaja Krishna Vaidyanatha Date: Wed, 12 Jul 2000 13:49:05 -0700 (PDT) Subject: Re: The BIG picture - RE: Raw Devices v.s. File System Dear Sean, I could not have said it any better...;-) Thank You, Gaja. --- sean.hull@pobox.com wrote: > > On Wed, 12 Jul 2000, Gaja Krishna Vaidyanatha wrote: > > > Given that the performance difference between these advanced > > fileystems and Raw is not that much, it really begs the > issue as > > to why one would want to give up the benefits of a > filesystem. > > I think this derives from whether one can paint with a big > brush so to > speak, or if one gets stuck in the details. Tuning large > complex > computing systems, like Unix systems running Oracle, often > requires one to > be able to look at things from a "birds eye" perspective, and > see the big > picture. When you do this you realize that every little ounce > of > performance isn't what you're after, but the > orders-of-magnitude gains. > You get these from: > > o using advanced filesystems over traditional buffered > filesystems > o tuning bad SQL queries > o making sure I/O is distributed across enough disks > o making sure you have enough memory that you're not swapping > > To name just a few. There are often incremental gains you can > get from > doing a VERY LOT OF EXTRA work, which are not worth it > cost-wise, and > headache-wise. > > Just my $0.02. > > Sean > ===== Gaja Krishna Vaidyanatha Director, I-O Management Products Quest Software Inc. (972)-304-1170 gajav@yahoo.com "Opinions and views expressed are my own and not of Quest" __________________________________________________ Do You Yahoo!? Get Yahoo! Mail – Free email you can access from anywhere!