Re: RAID performance (was: cvs commit: src/sys/kern subr_diskmbr.c)

2001-12-11 Thread Greg Lehey
On Tuesday, 11 December 2001 at 23:41:51 +0100, Wilko Bulte wrote: > On Wed, Dec 12, 2001 at 09:00:34AM +1030, Greg Lehey wrote: >> On Tuesday, 11 December 2001 at 15:34:37 +0100, Wilko Bulte wrote: >>> On Tue, Dec 11, 2001 at 11:06:33AM +1030, Greg Lehey wrote: On Monday, 10 December 2001 at

Re: RAID performance (was: cvs commit: src/sys/kern subr_diskmbr.c)

2001-12-11 Thread Wilko Bulte
On Wed, Dec 12, 2001 at 09:00:34AM +1030, Greg Lehey wrote: > On Tuesday, 11 December 2001 at 15:34:37 +0100, Wilko Bulte wrote: > > On Tue, Dec 11, 2001 at 11:06:33AM +1030, Greg Lehey wrote: > >> On Monday, 10 December 2001 at 10:30:04 -0800, Matthew Dillon wrote: > >>> .. > >>> and will g

Re: RAID performance (was: cvs commit: src/sys/kern subr_diskmbr.c)

2001-12-11 Thread Greg Lehey
On Tuesday, 11 December 2001 at 15:34:37 +0100, Wilko Bulte wrote: > On Tue, Dec 11, 2001 at 11:06:33AM +1030, Greg Lehey wrote: >> On Monday, 10 December 2001 at 10:30:04 -0800, Matthew Dillon wrote: >>> > performance without it - for reading OR writing. It doesn't matter > so mu

Re: RAID performance (was: cvs commit: src/sys/kern subr_diskmbr.c)

2001-12-11 Thread Bernd Walter
On Tue, Dec 11, 2001 at 03:34:37PM +0100, Wilko Bulte wrote: > On Tue, Dec 11, 2001 at 11:06:33AM +1030, Greg Lehey wrote: > > I think this is what Mike was referring to when talking about parity > > calculation. In any case, going across a stripe boundary is not a > > good idea, though of course

Re: RAID performance (was: cvs commit: src/sys/kern subr_diskmbr.c)

2001-12-11 Thread Wilko Bulte
On Tue, Dec 11, 2001 at 11:06:33AM +1030, Greg Lehey wrote: > On Monday, 10 December 2001 at 10:30:04 -0800, Matthew Dillon wrote: > > > >>> performance without it - for reading OR writing. It doesn't matter > >>> so much for RAID{1,10}, but it matters a whole lot for something like > >>

Re: RAID performance (was: cvs commit: src/sys/kern subr_diskmbr.c)

2001-12-10 Thread Bernd Walter
On Tue, Dec 11, 2001 at 11:06:33AM +1030, Greg Lehey wrote: > On Monday, 10 December 2001 at 10:30:04 -0800, Matthew Dillon wrote: > > > >>> performance without it - for reading OR writing. It doesn't matter > >>> so much for RAID{1,10}, but it matters a whole lot for something like > >>