Re: any way to optimize USB2 speed on KVM?

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On 05/21/2015 03:22 AM, Christophe Fergeau wrote:
Hey,

On Wed, May 20, 2015 at 10:14:05AM -0700, ToddAndMargo wrote:
Hi All,

Scientific Linux 6.6

I have a bootable FC21 flash drive.  I can boot my machine
directly from it or run it as a virtual machine through KVM.

Problem: it is about 5 times slower through KVM.  (Really,
I am not exaggerating).  Is there a was to optimize or speed
up USB2 through put in KVM?

So you are starting QEMU/KVM by pointing it at the USB flash drive, and
tell it to boot the guest OS from that flash drive, and this is 5 times
slower than when you boot from the same USB flash drive directly on bare
metal? Did I understand correctly?

Yes

If that is what you are experiencing, this is not related to SPICE, and
would be better reported directly to QEMU.

Christophe


I was hoping that a Spice driver was install.  Rats!

Thank you for helping me with this.

-T

--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Computers are like air conditioners.
They malfunction when you open windows
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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