Re: Software RAID 5 - Two reads are faster than one on a SW RAID5?

2007-07-20 Thread Justin Piszcz
On Fri, 20 Jul 2007, Lennart Sorensen wrote: On Fri, Jul 20, 2007 at 09:58:50AM -0400, Justin Piszcz wrote: I have a multi-core Q6600 CPU on a 10-disk Raptor RAID 5 running XFS. I just pulled down the Debian Etch 4.0 DVD ISO's, one for x86 and one for x86_64, when I ran md5sum -c MD5SUMS, I

Re: Software RAID 5 - Two reads are faster than one on a SW RAID5?

2007-07-20 Thread Lennart Sorensen
On Fri, Jul 20, 2007 at 09:58:50AM -0400, Justin Piszcz wrote: > I have a multi-core Q6600 CPU on a 10-disk Raptor RAID 5 running XFS. > > I just pulled down the Debian Etch 4.0 DVD ISO's, one for x86 and one for > x86_64, when I ran md5sum -c MD5SUMS, I see ~280-320MB/s. When I ran the > secon

Software RAID 5 - Two reads are faster than one on a SW RAID5?

2007-07-20 Thread Justin Piszcz
I have a multi-core Q6600 CPU on a 10-disk Raptor RAID 5 running XFS. I just pulled down the Debian Etch 4.0 DVD ISO's, one for x86 and one for x86_64, when I ran md5sum -c MD5SUMS, I see ~280-320MB/s. When I ran the second one I see upwards of what I should be seeing 500-520MB/s. NOTE:: The