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тАО02-05-2009 12:19 AM
тАО02-05-2009 12:19 AM
We are about to measure performance on an EVA system. Anyone knows which parameters we should use to get a good overview of the load on the EVA.
-inex
Solved! Go to Solution.
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тАО02-05-2009 12:30 AM
тАО02-05-2009 12:30 AM
SolutionRead latency < 15
Write latency < 5
Queue depth <= 1
If they are over those values, then it's time to watch the number of I/Os requested per second and divide it by the number or disks on the disk group.
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тАО02-05-2009 12:32 AM
тАО02-05-2009 12:32 AM
Re: EVA - perfmon
do you have a command syntax for this monitoring job? I was planning to run it for 24 hours.
-inex
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тАО02-05-2009 12:50 AM
тАО02-05-2009 12:50 AM
Re: EVA - perfmon
If you use EVAperf directly, it will display values on screen or generate a file that then must be processed with TLViz or some other software to be able to plot the values in a time scale.
For example:
evaperf
as Displays array status.
cs Displays controller status.
hps Displays host port statistics.
ps Displays port status.
pda Displays statistics for physical disk activity.
vd Displays virtual disk statistics.
vdrl Displays virtual disk read latency histograms.
vdwl Displays virtual disk write latency histograms.
To capture information to a file:
Evaperf all ├в cont 10 ├в dur 28800 ├в csv ├в fo filename
This will capture every 10 seconds for 8 hours.
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тАО02-05-2009 08:34 AM
тАО02-05-2009 08:34 AM
Re: EVA - perfmon
what would a good sample interval be?
I was planning to monitor for 24 hours, so an evaperf all command would probably generate a lot of data?
-inex
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тАО02-05-2009 09:40 AM
тАО02-05-2009 09:40 AM
Re: EVA - perfmon
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тАО02-05-2009 10:17 AM
тАО02-05-2009 10:17 AM
Re: EVA - perfmon
When I try to load the output data from an evaperf command, I get this message from the tlviz programme
"input did not contain fields from EVAPERF Build 6.0.0 or later.Formatter Exiting"
-inex
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тАО02-06-2009 04:26 AM
тАО02-06-2009 04:26 AM
Re: EVA - perfmon
-inex
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тАО02-10-2009 05:18 AM
тАО02-10-2009 05:18 AM
Re: EVA - perfmon
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тАО02-10-2009 12:02 PM
тАО02-10-2009 12:02 PM
Re: EVA - perfmon
Do you manage to pull data out of the database and into something presentable?
-inex