Hi guys,
is this latency normal? physical is physical server and VV is thick. load is generated by restore. server dont have load.
vmware - vmware disk is thin and VV is thick. when VV is thin latency is around 30-40ms. load in graph is generated with svmotion. in datastore are 4 VMs with no load. thanks for opinion.
3par is V800 P10000 with 4 controllers, 1000HDDs, AO is off for NL disks. All data are in SSD or in FC tier.
i have same latency, in full loaded EVA8100.
thanks for help
to big latency
to big latency
- Attachments
-
- physical server latency
- physiscal.png (341.58 KiB) Viewed 19920 times
-
- vmware latency
- vmware.png (240.7 KiB) Viewed 19920 times
-
Richard Siemers
- Site Admin
- Posts: 1333
- Joined: Tue Aug 18, 2009 10:35 pm
- Location: Dallas, Texas
Re: to big latency
What latency? You're at less than 7 ms for the whole chart. I don't see any 40ms latency in either of those graphs.
In the top chart, I see 3 to 4 ms (not 30 to 40), with a peak of 7 ms. The chart can be confusing since its showing ms, iops and mb/s all on the same axis.
Can you clarify what your asking?
Thanks!
--Richard
In the top chart, I see 3 to 4 ms (not 30 to 40), with a peak of 7 ms. The chart can be confusing since its showing ms, iops and mb/s all on the same axis.
Can you clarify what your asking?
Thanks!
--Richard
Richard Siemers
The views and opinions expressed are my own and do not necessarily reflect those of my employer.
The views and opinions expressed are my own and do not necessarily reflect those of my employer.
Re: to big latency
Just a tip , run thin prov on the 3PAR and thick eager zeroed in VMware.
Re: to big latency
The only thing I notice , is that write time for the physical disk is bounded to 3 ms/IO while for vmware it is not bound to any value. I infer the first one is using synchronous replication and the second one is not . Am I right ?
Thank you
ilv.
Thank you
ilv.