Jump to content
RESET Forums (homeservershow.com)

VM CPU Speed?


psykix
 Share

Recommended Posts

Anyone know why my E3-1265Lv2 runs at 2.5Ghz max under a Windows 10 VM (ESXi 6)?

 

When I was running a physical machine, it would boost to 3.5Ghz.

 

Link to comment
Share on other sites

Turbo Boost works fine with ESXi. The virtual CPU doesn't work properly for the various CPU info tools like CPU-Z and will just show it locked at a single speed 100% of the time. Look at the CPU performance graph for your VM and you'll see it ramping up past 2.5GHz.

 

I just started up a single core Windows 10 VM on my Microserver with a 1265Lv2. CPU-Z thinks I'm running 38 x 66MHz for 2508MHz all the time but the vSphere client shows me idling at 447MHz and ramping up to 3372MHz at 100% load.

Edited by GotNoTime
  • Like 1
Link to comment
Share on other sites

Ah, that explains it then. It's several years since I used VMware - but I did have a pretty big Blade/SAN setup to manage at the time.

 

I'm having to relearn everything now for home use, it's suprising how quickly you forget things when you don't utilise the skills on a daily basis.

 

I only want to run 2 VMs at the moment (Windows 10 running Plex Server, and Sophos UTM). I'm not sure how to slice and dice the resources though. At the moment I have 4 vCores allocated to the WIndows 10 VM. When it was on the physical server, it obviously had all 4 cores (8 x HT).

 

Is there a way to have a "pool" of the cores, and let VMware allocate them on an as needed basis or does it not work like that?

 

I have 16Gb of RAM and have 12Gb allocated to the Windows 10 machine, again I don't know if this is the correct way of doing things!

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

×
×
  • Create New...