Re: ATA RAID performance (numerous fs related questions)

2003-01-02 Thread Sean Hamilton
From: "Soeren Schmidt" <[EMAIL PROTECTED]> | Uhm, what kind of disks, stripesize etc are you using, without that info | noone can tell you why... Two Seagate 80GB 7200RPM drives each on their own ATA66 channel. They're not very fast, but they are quiet. Quick tests with dd show about 20 MB/s reads

Re: ATA RAID performance

2003-01-02 Thread Gary Stanley
I have tried using both atacontrol and ccdconfig to create stripes and mirrors of various sizes, and have found that in all cases, read performance *decreased*. Have you formatted your filesystem to the correct fragment/blocksizes? This usually helps on raid controllers in conjunction with the

Re: ATA RAID performance

2003-01-02 Thread Soeren Schmidt
It seems Sean Hamilton wrote: > Greetings, > > I have tried using both atacontrol and ccdconfig to create stripes and > mirrors of various sizes, and have found that in all cases, read performance > *decreased*. Uhm, what kind of disks, stripesize etc are you using, without that info noone can te

ATA RAID performance

2003-01-02 Thread Sean Hamilton
Greetings, I have tried using both atacontrol and ccdconfig to create stripes and mirrors of various sizes, and have found that in all cases, read performance *decreased*. Is this typical? I have a Promise controller in another computer running Windows which sees a considerable performance increa