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Latency and Less Troughput
Hi All,
My Customer told me to check the disk below in vmax side
/dev/rdsk/c10t60000970000292601573533030453530d0s6
/dev/rdsk/c10t60000970000292601573533030453445d0s6
/dev/rdsk/c10t60000970000292601573533030453436d0s6
/dev/rdsk/c10t60000970000292601573533030453434d0s6
whether there is a latency, less throughput, the disks above
How to check it?
Thanks
dynamox
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February 1st, 2012 21:00
you need to translate solaris disk to symmetrix device IDs, try:
symdev list -sid 123 -wwn | grep 60000970000292601573533030453530
and so on
hudan
18 Posts
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February 1st, 2012 22:00
i already found the device id , and how to check there is latency and less troughput?
Thanks
dynamox
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February 2nd, 2012 04:00
you can look for service times in SPA or ControlCenter Performance Analyzer
Quincy561
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February 2nd, 2012 05:00
To me the best place to measure the throughput and latency would be on the host. Why doesn't the customer look at iostat or sar?
For the Symm, most of the EMC folks have to rely on STP data from the service processor. Customers can use SPA or ECC.
Rasmmacias
108 Posts
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February 2nd, 2012 05:00
Hello.
You can try:
symlv
Displays performance statistics and detailed mapping information about one or more logical volumes
that are defined in a logical volume group and performs control operations on logical volumes
To display statistics about all logical volumes of VXVM on SunOS every 30 seconds for one hour, enter:
symlv stats -i 30 -c 120 -type SUN_VXVM
The output key follows:
Volume Group Type : SunOS VxVM
H:M:S VgName LvName RW/s R/s W/s KbRW/s KbR/s KbW/s %Busy %Wait
A B C D E F G H I J K
A Time of day
B Volume group name
C Logical volume name
D Read and write requests per second
E Read requests per second
F Write requests per second
G KB read and written per second
H KB read per second
I KB written per second
J 100 * (logical volume active time / elapsed time)
K 100 * (non-empty wait queue time / elapsed time)
vforde
67 Posts
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February 2nd, 2012 06:00
Additonally you could look at the symstat command for the device to check io metrics.