From: Marcelo Tosatti <mtosatti@redhat.com>
To: Dmitry Krivenok <krivenok.dmitry@gmail.com>
Cc: kvm@vger.kernel.org, Don Slutz <Don@cloudswitch.com>
Subject: Re: KVM guest OS reports zero CPU frequency via /proc/cpuinfo
Date: Fri, 1 Mar 2013 22:03:40 -0300 [thread overview]
Message-ID: <20130302010340.GA28128@amt.cnet> (raw)
In-Reply-To: <CAJN_NGbs1h8LG3Qudt4+XKGq-v9nkmzs63j0VQfH1VDV+bHYWA@mail.gmail.com>
https://lists.gnu.org/archive/html/qemu-devel/2012-10/msg02269.html
On Wed, Feb 20, 2013 at 01:25:04AM +0400, Dmitry Krivenok wrote:
> Hello,
>
> I encountered an odd issue with running VMWare .vmdk image inside KVM.
>
> I run KVM as follows
> qemu-kvm -hda ./guest.vmdk -m 4096
>
> and guest OS (SLES11) boots fine, but reports zero CPU freq via
> /proc/cpuinfo (cpu MHz):
>
>
>
> $ cat /proc/cpuinfo
>
> processor : 0
>
> vendor_id : GenuineIntel
>
> cpu family : 6
>
> model : 2
>
> model name : QEMU Virtual CPU version 0.15.1
>
> stepping : 3
>
> cpu MHz : 0.000
>
> cache size : 4096 KB
>
> fpu : yes
>
> fpu_exception : yes
>
> cpuid level : 4
>
> wp : yes
>
> flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca
> cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx lm up rep_good
> nopl pni cx16 popcnt lahf_lm
>
> bogomips : 2088.96
>
> clflush size : 64
>
> cache_alignment : 64
>
> address sizes : 40 bits physical, 48 bits virtual
>
> power management:
>
> $
>
>
>
> I tried to convert .vmdk to qcow2 image and also tried different
> –cpu=<MODEL> options, but I always get zero frequency in this guest.
>
> Another guest (Ubuntu in native qcow2 image) works fine and reports
> correct cpu frequency, so I only see this problem with this particular
> .vmdk image.
>
>
>
> I’m running
>
> QEMU emulator version 0.15.1 (kvm-0.15.1-0.17.3), Copyright (c)
> 2003-2008 Fabrice Bellard
>
> on SLES11-SP2 host (3.0 kernel + patches).
>
> This problem is critical for me because by guest runs a binary which
> relies on non-zero CPU freq in /proc/cpuinfo.
>
>
> Any ideas?
>
> Thanks!
>
> --
> Sincerely yours, Dmitry V. Krivenok
> e-mail: krivenok.dmitry@gmail.com
> skype: krivenok_dmitry
> jabber: krivenok_dmitry@jabber.ru
> icq: 242-526-443
> --
> To unsubscribe from this list: send the line "unsubscribe kvm" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
prev parent reply other threads:[~2013-03-02 1:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-19 21:25 KVM guest OS reports zero CPU frequency via /proc/cpuinfo Dmitry Krivenok
2013-03-02 1:03 ` Marcelo Tosatti [this message]
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