On Sun, 1 Dec 2002 00:30, Thomas Kirk wrote: > On Fri, Nov 29, 2002 at 05:07:16PM +0100, Nicolas Bougues wrote: > > You should probably try to time the disk reads, not the buffer cache... > > > > hdparm -t > > Yes the disk reads is a more realistic real world test : > > /dev/sda5: > Timing buffer-cache reads: 128 MB in 1.23 seconds =104.07 MB/sec > guf:~# hdparm -t /dev/sda5
hdparm is NOT a real world test! In real world operation you use a file system not direct access to the device. Bonnie++ is one of many file system benchmarks that you can use to get results that are more useful than hdparm. If you want to look at the performance of a raw device then use zcav (part of Bonnie++), it allows you to easily graph the varying performance across a partition. -- http://www.coker.com.au/selinux/ My NSA Security Enhanced Linux packages http://www.coker.com.au/bonnie++/ Bonnie++ hard drive benchmark http://www.coker.com.au/postal/ Postal SMTP/POP benchmark http://www.coker.com.au/~russell/ My home page -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
