FT peaks of the processor and latency

What kind of latency should expect when running FT protected comments?

I have a new 3-node cluster using servers DL380 G9 6.0 with the latest patch from April. Nothing runs on the then invited another cluster vCenter and 1 2012 windows server, I use for the FT test. When I activate FT on the client, it becomes slow and the comments CPU spikes when you do something, open the windows, moving around, etc. It's ping to meet when protected FT is usually is normally 50 ms or more and you can see it increase when the guest cpu spikes as a result of the opening of windows.

Is this normal? I do not think that this kind of slow and latency would be acceptable for production applications, am I missing something?

the guest is 2012 with 2 vCPU and 8 GB of memory

Exchanges of Vmotion and FT have 2 network cards dedicated to each of them and active jumbo frames. When traffic monitoring network connections is not anywhere close to saturating the network. Use of the host is nearly 5% on all nodes.

After trials with network cards 10 GbE for IP and bandwidth monitoring, that we determined that 10 GB is required even if the documentation indicates that it is only recommended. They changed the underlying technology that connects FT in vSphere 6.0 vLockstep to what is called "Fast pointing to the audit. Followed by the natachasery FT using esxtop on an old 5.5 system that uses the old technology (vLockstep) and then this same comments and using FT on 6.0 while monitoring with esxtop once again, we could see that it uses a lot more bandwidth to do the same.

So the real question wasn't that something was misconfigured, but the documentation needs to read that 10 GB is 'necessary' and not 'recommended '.

Working with VMware, we also discovered that they would not escalate the ticket to engineering at least use 10GBe links for feet and inches 6.0, it would make you assume that it is an obligation, not a recommendation. The documentation is misleading and I hope that this post helps someone in the future and that VMware updates the requirements documentation.

Tags: VMware

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