256MB, Adaptec AIC7880 Array 1000 scsi controller running
7x 8.7GB SEAGATE ST39140W MEDALIST Harddrives
Kernel 2.0.35 with raid0145-19981106-C-2.0.35 patch and Kernel 2.1.127 raid0145-19981109-C-2.1.127 patch
Raidtools 0.90 and Bonnie.
The first Harddrive of the array is used for standard Linux install
the other 6 is configured as RAID5.
hence 8.7*6-8.7(for parity) = 43.5GB
raidtab is set to 32kb chunks and left-symmetric.
RAID5 performence test with Kernel 2.0.35
1 meg run -------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
1 4498 74.7 93772 91.6 30878 120.6 5824 91.0 151367 -0.0 6631.3
36.5
End of 1 meg run
10 meg run -------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
10
5385 84.7 85906 100.7 12214 41.7 3942 60.8 50468 44.4 9309.6 60.5
End of 10 meg run
100 meg run -------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
100
5030 79.6 13383 13.9 3479 8.7 3162 45.3 5211
5.1 209.6 3.1
End of 100 meg run
1000 meg run -------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
1000 4938
77.7 12060 12.9 3428 9.5 3004 43.4 4508 4.4
93.5 1.4
End of 1000 meg run
1808 meg run -------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
1808 4918
77.4 12022 12.6 3283 8.9 2880 41.4 4418 4.2
81.3 1.4
End of 1808 meg run
RAID5 performence test with Kernel 2.1.127
1 meg run -------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
1 4432 77.9 84418 82.4 16318 47.8 6341 99.1 19301 18.8 13620.7
81.7
End of 1 meg run
10 meg run -------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
10
5371 85.0 67909 79.6 27729 78.5 5282 81.5 167312 98.0 2888.4 17.3
End of 10 meg run
100 meg run -------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
100
5035 79.7 56675 61.4 7476 23.3 5164 82.0 117892 81.7 11255.5
81.6
End of 100 meg run
1000 meg run -------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
1000 4901
77.9 15468 24.4 6852 20.9 4851 71.3 14208 15.4 139.4
2.2
End of 1000 meg run
1808 -------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
1808 4903
78.2 13992 22.8 6949 21.2 5058 74.4 14275 15.7 125.2
1.9
End of 1808 meg run
SO = Sequential Output
SI = Sequential Input
I don't know what happend to K 2.0.35 SI Block test, its way out of proportion.
based on the results K2.1.127 is slightly faster than K2.0.35 but uses a lot more cpu time... so there u have it...
