Operating System - HP-UX
1748142 Members
3585 Online
108758 Solutions
New Discussion

Re: how to calculate disk throughput

 
NDO
Super Advisor

Re: how to calculate disk throughput

Hi

Sorry If I did upset you, I will, like always do, click on kudos.

FR
Pete Randall
Outstanding Contributor

Re: how to calculate disk throughput

Not upset, just trying to make a suggestion.  Glad to see you always do!


Pete
NDO
Super Advisor

Re: how to calculate disk throughput

Hi

so what would be the right measure:
1. the sar -H 2 2, that gives me :
HP-UX dbnode1 B.11.31 U ia64 07/12/11

13:37:41 ctlr util t-put IO/s r/s w/s read write avque avwait avserv
%age MB/s num num num MB/s MB/s num msec msec
13:37:43 fcd0 90 4.73 140 130 9 4.70 0.03 1 0 7
13:37:45 mpt0 1 0.01 2 0 2 0.00 0.01 1 0 6
fcd0 89 4.84 184 139 45 4.62 0.22 1 0 6
mpt4 1 0.01 2 0 2 0.00 0.01 1 0 5

Average fcd0 90 4.79 162 135 27 4.66 0.12 1 0 6
Average mpt0 1 0.00 1 0 1 0.00 0.00 1 0 6
Average mpt4 1 0.00 1 0 1 0.00 0.00 1 0 5
That gives me the IO column

Or the sar -d -R 2 2, that gives me the number of reads and writes:

HP-UX dbnode1 B.11.31 U ia64 07/12/11

13:38:35 device %busy avque r/s w/s blks/s avwait avserv
13:38:37 disk6 1.00 0.50 0 2 32 0.00 5.80
disk11 1.50 0.50 0 2 32 0.00 6.42
disk65 1.50 0.50 5 4 168 0.00 1.72
disk66 0.50 0.50 4 4 136 0.00 0.56
disk67 58.00 0.50 88 2 30118 0.00 6.41
disk71 0.50 0.50 4 2 160 0.00 0.56
13:38:39 disk6 1.50 0.50 0 3 35 0.00 14.40
disk11 1.00 0.50 0 2 33 0.00 8.85
disk65 18.00 0.50 32 3 5867 0.00 5.11
disk66 1.50 0.50 3 3 43 0.00 2.19
disk67 58.00 0.59 112 1 30518 0.02 5.23
disk71 0.50 0.50 3 0 96 0.00 1.15

Average disk6 1.25 0.50 0 2 34 0.00 10.96
Average disk11 1.25 0.50 0 2 32 0.00 7.77
Average disk65 9.75 0.50 19 4 3018 0.00 4.43
Average disk66 1.00 0.50 4 3 90 0.00 1.26
Average disk67 58.00 0.55 100 2 30318 0.01 5.75
Average disk71 0.50 0.50 3 1 128 0.00 0.78
dbnode1[24]/root #


FR
Brett Williams
New Member

Re: how to calculate disk throughput

Glance can also be used to show the throughput.  Under the IO By Disk section ("u" as the hot-key) you can see the Physical IO for the given device asssociated with the NetApp.  Glance works best when invoked within an hpterm.  Glance shows you the information in real time and can summarize the information since the utilty was invoked.  If you want to export the historical data from the server then use the "extract" utility to report on the information you're looking for.