[libvirt-users] VM Performance using KVM Vs. VMware ESXi

[Jatin Davey]

On 4/15/2015 2:21 AM, Nikki VonHollen wrote:
> Hi Jatin,
>
> The RedHat documentation on this is extremely helpful. It's so helpful 
> that I use it as a reference on completely different distributions.
>
> VMWare does a pretty good job of guiding you and giving you defaults 
> that are sensible. With Libvirt/QEMU/KVM, you need to get an idea of 
> those and enable them yourself.
>
> For example, I see that you are using qcow2 files, but if you don't 
> need the features it provides, then using block devices (usually 
> logical volumes in a volume group) directly for VM disks may be 
> significantly faster. It also depends on how caching is configured. 
> The manuals will step you through all of that. Pay special attention 
> to storage, because it's the first bottleneck a lot of applications hit.
>
> Check out the manuals under the virtualization section here: 
> https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/
>
> Specifically: 
> https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Virtualization_Tuning_and_Optimization_Guide/index.html
>
> Good luck!
> Nikki
>
Sure , Thanks Nikki.

I will surely have to dig deep into storage as i can see a clear 
bottleneck in it. Thanks for the pointers.

Regards,
Jatin
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