As promised on Wednesday let’s move on to take a
look at Hyper-V.
Memory Details - Hyper-V Memory Balancer Pressure
The graph below looks at
average memory from the host perspective –as you can see the pressure goes up
to over 100% and then drops back down.
The pressure is the ratio
of memory allocated compared to memory demand. You won’t ever see this go over
100% as this is at host level, as the operating system balancer will kick in
and provide memory where it’s needed.
Memory Details - Hyper-V Memory Current Pressure
The next chart here is
memory pressure from the virtual machine perspective, which is more granular.
You will see there is a
buffer setting that you configure when you set up dynamic memory, and the
buffer setting in this case was 20, which kept normal pressure at 80. When the
test started you can see that it went way up over 100 which means that the
demand was greater than the allocation in the virtual machines. The balancer
would then kick in to provide more memory and you can see the pressure
oscillating back and forth.
This test showed that the memory balancer is working effectively.
This test showed that the memory balancer is working effectively.
Memory Details - Hyper-V Pages Allocated
In this next chart you can
see that pages are being allocated dynamically during the test, based on need.
On Monday I’ve selected a handful of
I/O metrics to show you.
Dale Feiste
Consultant
No comments:
Post a Comment