HP StorageWorks Scalable File Share - Manual (Page 84)

Viewing system information 4–28
read write
discont pages rpcs % cum % | rpcs % cum %
0: 0 0 0 | 39624 100 100
read write
discont blocks rpcs % cum % | rpcs % cum %
0: 0 0 0 | 34572 87 87
1: 0 0 0 | 4941 12 99
2: 0 0 0 | 106 0 99
3: 0 0 0 | 5 0 100
# cat /proc/fs/lustre/obdfilter/ost10/brw_stats
snapshot_time: 1096994356:601614 (secs:usecs)
read write
pages per brw brws % cum % | rpcs % cum %
1: 0 0 0 | 12 0 0
2: 0 0 0 | 0 0 0
4: 0 0 0 | 25 0 0
8: 0 0 0 | 2 0 0
16: 0 0 0 | 222 0 0
32: 0 0 0 | 226 0 0
64: 0 0 0 | 429 0 1
128: 0 0 0 | 60335 98 100
read write
discont pages rpcs % cum % | rpcs % cum %
0: 0 0 0 | 55093 89 89
1: 0 0 0 | 217 0 90
2: 0 0 0 | 171 0 90
3: 0 0 0 | 251 0 90
4: 0 0 0 | 229 0 91
5: 0 0 0 | 197 0 91
6: 0 0 0 | 389 0 92
7: 0 0 0 | 4617 7 99
8: 0 0 0 | 87 0 100
read write
discont blocks rpcs % cum % | rpcs % cum %
0: 0 0 0 | 47633 77 77
1: 0 0 0 | 7224 11 89
2: 0 0 0 | 594 0 90
3: 0 0 0 | 251 0 90
4: 0 0 0 | 214 0 91
5: 0 0 0 | 205 0 91
6: 0 0 0 | 361 0 92
7: 0 0 0 | 4083 6 98
8: 0 0 0 | 627 1 99
9: 0 0 0 | 51 0 99
10: 0 0 0 | 8 0 100
The output shows information about OST services, including the number of pages that each read and write
operation on the OST service consisted of. This is shown in the
pages per brw
(block read/write) section
of the output. In general, a higher number of pages per operation results in better performance.