Re: Trying to understand iostat output

2005-12-16 Thread Joachim Schipper
On Wed, Dec 14, 2005 at 06:33:00PM +0100, Markus Wernig wrote: > Joachim Schipper wrote: > > > There was a lengthy thread about ccd mirroring here. Search the > > archives, and check whether it's worth the risk of ccd 'eating your > > data' first. (If not, go with RAID-1.) > > Hi > > Yes, I foll

Re: Trying to understand iostat output

2005-12-14 Thread Markus Wernig
Joachim Schipper wrote: > There was a lengthy thread about ccd mirroring here. Search the > archives, and check whether it's worth the risk of ccd 'eating your > data' first. (If not, go with RAID-1.) Hi Yes, I followed the thread, but to my understanding it was not conclusive that ccd would be

Re: Trying to understand iostat output

2005-12-13 Thread kami petersen
Markus Wernig skrev: I have a system (obsd3.8/sparc64) with 2 identical scsi drives (4 partitions + 1 swap each). The largest partition (10G) is mirrored over the 2 drives as a ccd with interleave factor 16. And 1.2M/s is rather less that what I'd have expected, is this figure really the dis

Re: Trying to understand iostat output

2005-12-13 Thread Joachim Schipper
On Tue, Dec 13, 2005 at 01:16:20PM +0100, Markus Wernig wrote: > Hi all! > > I have a system (obsd3.8/sparc64) with 2 identical scsi drives (4 > partitions + 1 swap each). The largest partition (10G) is mirrored over > the 2 drives as a ccd with interleave factor 16. > > When running iostat durin

Trying to understand iostat output

2005-12-13 Thread Markus Wernig
Hi all! I have a system (obsd3.8/sparc64) with 2 identical scsi drives (4 partitions + 1 swap each). The largest partition (10G) is mirrored over the 2 drives as a ccd with interleave factor 16. When running iostat during an I/O stress test (writing many small files to the ccd in 10 parallel thre