Re: Re[2]: [zfs-discuss] Re: ZFS RAID10

2006-08-11 Thread Roch
Robert Milkowski writes: > Hello Neil, > > Thursday, August 10, 2006, 7:02:58 PM, you wrote: > > NP> Robert Milkowski wrote: > >> Hello Matthew, > >> > >> Thursday, August 10, 2006, 6:55:41 PM, you wrote: > >> > >> MA> On Thu, Aug 10, 2006 at 06:50:45PM +0200, Robert Milkowski wrote:

Re[2]: [zfs-discuss] Re: ZFS RAID10

2006-08-10 Thread Robert Milkowski
Hello Neil, Thursday, August 10, 2006, 7:02:58 PM, you wrote: NP> Robert Milkowski wrote: >> Hello Matthew, >> >> Thursday, August 10, 2006, 6:55:41 PM, you wrote: >> >> MA> On Thu, Aug 10, 2006 at 06:50:45PM +0200, Robert Milkowski wrote: >> btw: wouldn't it be possible to write block onl

Re[2]: [zfs-discuss] Re: ZFS RAID10

2006-08-10 Thread Robert Milkowski
Hello Neil, Thursday, August 10, 2006, 7:02:58 PM, you wrote: NP> Robert Milkowski wrote: >> Hello Matthew, >> >> Thursday, August 10, 2006, 6:55:41 PM, you wrote: >> >> MA> On Thu, Aug 10, 2006 at 06:50:45PM +0200, Robert Milkowski wrote: >> btw: wouldn't it be possible to write block onl

Re[2]: [zfs-discuss] Re: ZFS RAID10

2006-08-10 Thread Robert Milkowski
Hello Matthew, Thursday, August 10, 2006, 6:55:41 PM, you wrote: MA> On Thu, Aug 10, 2006 at 06:50:45PM +0200, Robert Milkowski wrote: >> btw: wouldn't it be possible to write block only once (for synchronous >> IO) and than just point to that block instead of copying it again? MA> We actually d

Re[2]: [zfs-discuss] Re: ZFS RAID10

2006-08-10 Thread Robert Milkowski
Hello Matthew, Thursday, August 10, 2006, 4:50:31 PM, you wrote: MA> On Thu, Aug 10, 2006 at 11:48:09AM +0200, Robert Milkowski wrote: >> MA> This test fundamentally requires waiting for lots of syncronous writes. >> MA> Assuming no other activity on the system, the performance of syncronous >> M

Re[2]: [zfs-discuss] Re: ZFS RAID10

2006-08-10 Thread Robert Milkowski
Hello Matthew, Tuesday, August 8, 2006, 8:08:39 PM, you wrote: MA> On Tue, Aug 08, 2006 at 10:42:41AM -0700, Robert Milkowski wrote: >> filebench in varmail by default creates 16 threads - I configrm it >> with prstat, 16 threrads are created and running. MA> Ah, OK. Looking at these results, i

Re[2]: [zfs-discuss] Re: ZFS RAID10

2006-08-08 Thread Robert Milkowski
Hello Matthew, Tuesday, August 8, 2006, 8:08:39 PM, you wrote: MA> On Tue, Aug 08, 2006 at 10:42:41AM -0700, Robert Milkowski wrote: >> filebench in varmail by default creates 16 threads - I configrm it >> with prstat, 16 threrads are created and running. MA> Ah, OK. Looking at these results, i