IOPerf results

Results were obtained using a 8 kByte buffer, 5000 IO 1 pass. The test order in that table is :

IO test on individual partition (one at a time, no prefix)
One IO thread per volume, N volumes (1PV_)
Parralele IO, 10 threads per volume. One result-average shown. (NPV_)

Block IO Character Random

fwrite fread putc getc seek

Machine/FS KB KB/sec Real KB/sec CPU %CPU KB/sec Real KB/sec CPU %CPU KB/sec Real KB/sec CPU %CPU KB/sec Real KB/sec CPU %CPU KB/sec Real KB/sec CPU %CPU

_rmine608r__star_data33_ 40000 64516.13 71428.57 90.32 235294.12 235294.12 100.00 12422.36 12422.36 100.00 14035.09 14035.09 100.00 1627.60 1627.60 100.00

NPV_rmine608r__star_data33_test_ 40000 4698.53 65993.41 7.11 80511.10 150193.59 52.99 2359.14 12532.84 18.81 2952.09 13441.08 21.96 773.54 1617.36 47.94

IOzone profiling

The profiling gives a gross performance view for several kByte buffer and several file size.
The Read/Write tests are unbuffered while FRead/FWrite tests are buffered.

		Block IO						Character						Random
		fwrite			fread			putc			getc			seek
Machine/FS	KB	KB/sec Real	KB/sec CPU	%CPU	KB/sec Real	KB/sec CPU	%CPU	KB/sec Real	KB/sec CPU	%CPU	KB/sec Real	KB/sec CPU	%CPU	KB/sec Real	KB/sec CPU	%CPU
_rmine608r__star_data33_	40000	64516.13	71428.57	90.32	235294.12	235294.12	100.00	12422.36	12422.36	100.00	14035.09	14035.09	100.00	1627.60	1627.60	100.00
NPV_rmine608r__star_data33_test_	40000	4698.53	65993.41	7.11	80511.10	150193.59	52.99	2359.14	12532.84	18.81	2952.09	13441.08	21.96	773.54	1617.36	47.94