Hyper-V Performance Counters – Part one of many - The overview

re: Hyper-V Performance Counters – Part one of many - The overview

Anisio J. Moreira Neto — Fri, 09 Apr 2010 14:30:20 GMT

I need more infomation about "hyper-v virtual storage device\Error Count" counter. The system disk of my virtual machine always one.

re: Hyper-V Performance Counters – Part one of many - The overview

Nilesh — Wed, 19 Aug 2009 08:25:44 GMT

Is there any way to get memory usage of a virtual machine?

re: Hyper-V Performance Counters – Part one of many - The overview

SandyGMS — Tue, 23 Sep 2008 15:25:10 GMT

I am not able to access perfmon counters

(% Guest Run Time,% Hypervisor Run Time etc)for "Hyper-V Hypervisor Logical Processor" remotely from 2003 machine where same are accessible using 2008 machine remotely.

re: Hyper-V Performance Counters – Part one of many - The overview

Martin Herbener — Tue, 09 Sep 2008 15:47:59 GMT

What's the best RAM-related counter or metric to examine to decide if a given host can handle 1) another VM, or 2) an increase in the memory allocation to a VM?

thanks!

Martin

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Tony's Reply

Martin there really is no one place. Generally a VM will take the size you specify or it + 64MB. We hope to make figuring out memory usage easier in future releases.

You can always use task manager to see what Windows has available or on the standby list.

re: Hyper-V Performance Counters – Part one of many - The overview

Hyper-V — Sun, 10 Aug 2008 01:42:41 GMT

In ProfMon I can list the Switch Port and it shows a bunch of Instance IDS like f79d9560-5982-4c03-bh8f-7458545458_c441448g-4112-gdfd-4584-s55vveeed732c98c

How do I reference these to the VM virtual nic?

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[Tony's Reply] You need to use the WMI interfaces to enumerate the NICs configured to VM's, Each NIC has a GUID and this is what you are seeing in the virtual switch ports.

re: Hyper-V Performance Counters – Part one of many - The overview

GeetaGiri — Mon, 21 Jul 2008 15:17:07 GMT

Hello Tony,

On 64 bit operating systems, there are 2 perfmon.exe one is from system32 and another is from syswow64 folder.

Do both of those expose hyper-v performance counters and their values?

Becuase of unavailability of practical setup I could not verify that, Anyone having setup ready may help to know this.

Thanks in advance!

re: Hyper-V Performance Counters – Part one of many - The overview

Geeta — Tue, 15 Jul 2008 10:54:20 GMT

Can someone give the list of counters for following attribute groups:

· Hyper-V Hypervisor Partition

· Hyper-V Hypervisor Root Partition

· Hyper-V Legacy Network Adapter

· Hyper-V Virtual Network Adapter

· Hyper-V Virtual Switch

· Hyper-V Virtual Switch Port

· Hyper-V Virtual IDE Controller

· Hyper-V Virtual Storage Device

· Hyper-V Virtual Machine Health Summary

· Hyper-V Virtual Machine Summary

[Tony's reply] Will do as time allows.

re: Hyper-V Performance Counters – Part one of many - The overview

Pete — Sat, 14 Jun 2008 13:24:01 GMT

Are these counters available through the performance registry?

[Tony's reply]

There is nothing special with the Hyper-V performance counters in terms or reading them. You should be able to access them via WMI apis as well as perfmon apis (of which the registry is one).

There are some known WS08 bugs around perfmon counters that prevent counters from saving to trace files, base counters dont show up in WMI, ... so watch out for these.

re: Hyper-V Performance Counters – Part one of many - The overview

PADIYAR — Tue, 10 Jun 2008 21:33:19 GMT

How do I get the information on what is the Interval and number of samples used for calculating the /sec values given by these HyperV performance counters?

[Tony's Reply] The interval is around a second. You can get the raw counts by querying the counters via WMI.

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