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| Service Time and what it means https://3parug.com/viewtopic.php?f=18&t=185 |
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| Author: | fterveen [ Tue Aug 28, 2012 9:24 am ] |
| Post subject: | Service Time and what it means |
I am managing 4 3par systems 2 F400 replicating data to each other synchronously 2 F200 arrays in 2 seperate locations I am checking their service time of VVluns and I see that the read and write st is fairly ok But the TOTAL st = read st / write st I thought that it would be Total st = read st + write st ? Please help me in understanding this a little better Thanks in advance Frank |
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| Author: | ilv [ Tue Sep 04, 2012 1:19 am ] |
| Post subject: | Re: Service Time and what it means |
From my observation it is a weighted average (didn't get any doc on this): Total_st=(ReadIOPS*Read_st + WriteIOPS*Write_st) / (ReadIOPS+WriteIOPS) And it should mean : the time spent for servicing a request during the last second. Just to add Read_st and Write_st , it seems to me useless ... |
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