On Sat, 3 Nov 2001 14:33, Jeff Waugh wrote: > <quote who="Russell Coker"> > > > RAID-5 is another issue though. But then you have to consider that Linux > > software RAID kills the performance of most hardware RAID controllers. > > Run an Athlon 800 with two IDE drives in RAID-1 and expect 2-4 times the > > performance for bulk IO that an entry level Mylex RAID controller with > > Ultra2 SCSI 10K rpm drives. I expect that a top-end Mylex controller > > will perform well (but who can afford one of them?). > > Wow! > > Russell, do you know of any Linux I/O and hard disk performance guides? > I've recently read Adrian Likins' system tuning page [1] and am interested > too see if there's anything more specific.
I'll have to check out that link. But generally I rely on my own experience when playing with disk performance. I haven't (yet) come across any guides to these things which were good and pitched at a high technical level. There's a number of guides that tell you about hdparm and what DMA is, but if you already know that stuff then there's little good documentation. Then on the rare occasions that I do meet people who know this stuff reasonably well they seem to spend all their time trying to convince me that SCSI is better than IDE (regardless of benchmark results). :( > [1] http://people.redhat.com/alikins/system_tuning.html -- 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/projects.html Projects I am working on http://www.coker.com.au/~russell/ My home page -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
