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Re: [Qemu-discuss] How to resolve "Failed to mmap" error?

From: Jakob Bohm
Subject: Re: [Qemu-discuss] How to resolve "Failed to mmap" error?
Date: Sat, 22 Oct 2016 13:20:57 +0200
User-agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0

On 20/10/2016 06:21, A223 A223 wrote:
Okay, I've enabled intremap=no_x2apic_optout on the host kernel and
didn't see much of a change in performance.
I feel I should mention that the qemu process on the host consumes
about 8-30% CPU (as shown in top) when the guest (Windows 10) task
manager shows <1.0% cpu utilization. More often than not, it is >15%.
Is this normal?
Maybe try to look at the Interrupt, disk and network statistics
on the first and second tab of the Windows 8/10 Task Manager
and see if there is any correlation with the extra host CPU
  I know the details there are a bit meager compared to
what might be available with lower level Windows tools, but
at least it's easy.


Jakob Bohm, CIO, Partner, WiseMo A/S.  https://www.wisemo.com
Transformervej 29, 2860 Søborg, Denmark.  Direct +45 31 13 16 10
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