Now, some more benchmarks (using same configuration as for the
RAID0 benchmark I posted recently).
4 Cheatah disks: 2 each on each of the two QL1080, RAID0:
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2000 19747 97.3 61837 61.7 23677 55.6 25909 95.8 73000 77.9 233.3 2.9
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2000 19718 97.5 64354 63.5 23755 56.3 26233 96.9 73086 78.1 236.2 3.0
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2000 19744 97.1 65587 64.9 23813 56.5 26152 96.7 73289 77.3 232.6 2.6
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2000 19687 97.2 61188 60.4 23818 57.1 26061 96.3 72970 78.5 230.5 1.7
Two more disks on a UW2 AIC7895: (makes 6 disks):
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2000 19660 96.8 83603 85.7 28541 69.3 26083 97.3 83422 94.0 281.2 3.4
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2000 19674 97.0 83543 86.6 28174 68.6 26059 96.9 83272 93.4 284.1 4.2
One more disk on QL1080 (makes 7 disks: 3/1080 2/1080 2/AIC7895):
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2000 19679 97.1 84257 86.7 30168 73.0 26093 97.2 83422 92.5 312.9 3.8
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2000 19677 97.2 84581 86.1 29939 72.4 25993 96.5 83271 92.5 316.3 3.9
Now, using only 1 GB of the 9GB disks, so total 7 GB:
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2000 19687 97.2 84324 86.8 30159 73.2 26046 96.8 83422 92.1 302.2 3.4
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2000 19651 97.0 83532 85.2 30088 73.0 26038 96.9 83047 93.1 306.3 2.5
Now, RAID5 on the same 7 disk set:
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2000 16241 79.7 43569 42.0 19304 46.6 24004 92.0 68733 82.8 276.6 2.1
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2000 16262 79.9 44028 42.6 19245 47.0 24104 92.3 68452 81.9 268.7 2.5
Now, RAID5 on 6 disks, 2 per card:
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2000 16092 78.9 43130 41.2 18491 45.6 23908 91.7 66890 82.5 251.6 3.5
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2000 16015 78.6 42826 40.4 18413 45.8 23768 91.5 66360 80.7 249.8 2.7
Now, RAID5 on 4 disks, 2 per QL1080 card:
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2000 15419 75.7 39433 37.3 15935 40.0 22662 89.7 53683 67.3 205.3 1.7
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2000 15499 75.8 38840 36.6 15861 39.8 22691 89.4 53715 65.7 209.6 1.8
Now, RAID5 on 3 disks, 3 on the first QL1080, 1 on the other:
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
1600 14654 71.8 33961 31.1 13049 32.1 21575 85.4 36387 41.6 184.8 1.8
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
1600 14716 72.1 34023 30.7 13184 32.8 21579 85.4 36271 42.0 180.7 1.7
Now, RAID4 instead:
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
1600 14756 72.4 33957 30.8 14232 32.5 24400 90.9 36621 37.4 188.6 1.7
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
1600 14785 72.2 34261 31.1 14210 32.5 24402 90.5 36731 36.5 176.2 2.3
Now, all 3 disks on the same QL1080 for RAID4 mode:
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
1600 14841 72.8 35115 32.6 14185 32.8 24354 89.6 36676 37.2 174.4 1.2
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
1600 14892 73.3 35268 32.7 14277 33.0 24426 90.0 36758 38.0 177.9 1.2
