On Fri, 30 Oct 1998, Juergen Frick wrote:
> System conifguration:
> ASUS P2B, 400MHz P-II, 128MB SDRAM
> GDT6538RD, 32MB EDO 50ns (S1 closed)
> 5 Quantum Viking II, 2-1-2 on all three channels
What does the 2-1-2 part mean? Are you saying you had 2 drives each on
channels 1 and 3, with 1 drive on channel 2, or something totally
different?
> RAID0 -------Sequential Output-------- ---Sequential Input-- --Random--
> -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
> MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
> 750 10216 97.7 41851 41.3 15872 33.6 22510 94.5 36884 23.3 172.5 2.7
>
> RAID5 -------Sequential Output-------- ---Sequential Input-- --Random--
> -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
> MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
> 750 14465 80.1 6305 5.7 6938 14.6 14785 61.8 29818 19.1 149.7 2.4
How do you explain the block output being so much slower than character
output in the RAID5 test? Normally, block i/o does better than character
i/o, and that was the case in the RAID0 test. Other than that, the
numbers look very good.
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