Here are the bonnie results... This is the "beefy" machine -------Sequential Output-------- ---Sequential Input-- --Random-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU 100 12991 100.0 105984 99.4 13171 8.2 15454 99.8 536628 99.6 480.1 2.5
This is the puny machine: -------Sequential Output-------- ---Sequential Input-- --Random-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU 100 6021 98.1 91309 25.9 4779 1.0 6176 99.5 1457838 99.7 50186.3 62.7 > Hm, you said SCSI Raid - that can mean alot. > Could you run a good old bonnie on both boxes and compare the numbers? > One thing that comes to mind when I hear such things is a system with > disk write cache disabled. Now, if you have a raid controller without > battery backed cache, your vendor will hopefully disable write cache on > the controller and also disable WCE bit on the drives. That way it will > perform very poorly but be as secure as possible. > > Simon > --- Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html