From: Paolo Bonzini <pbonzini@redhat.com>
To: jinho hwang <hwang.jinho@gmail.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Significant slowdown after qemu-kvm-1.2.0
Date: Mon, 01 Jul 2013 23:54:27 +0200 [thread overview]
Message-ID: <51D1FA93.8060200@redhat.com> (raw)
In-Reply-To: <CAPQGAnFin9m08PT5szef_KZYVa45Tz9k7MyMUhAM=VMJXGZaiw@mail.gmail.com>
Il 01/07/2013 23:51, jinho hwang ha scritto:
> Hi Guys,
>
> I am new to kvm development (used to work on Xen). I used qemu-kvm-1.2.0
> first, and then due to pci memory size (x64 bit support), I switched
> from 1.2.0 to qemu-kvm-1.5.0 (same for 1.3.0~).
There is no qemu-kvm 1.5.0. You are using qemu 1.5.0.
> After that, my VM slows
> down significantly including booting and execution. Also, sometimes
> kernel messages "CPU stuck for x seconds" show in dmesg. I think CPU
> scheduling has been changed or should be set up properly, but I have no
> clue for now. Can anyone help me to figure out this? I really need some
> fast VMs as I used to run with qemu-kvm-1.2.0.
>
> I am currently running ubuntu-12.10_64 in VM, and my configure was
>
> ./configure --prefix=/usr --target-list=x86_64-linux-user,x86_64-softmmu
>
> sudo qemu-system-x86_64 -name vm -m 1g -hda /home/jinho/virt/vms/vm1.img
> -device e1000,netdev=net0,mac=00:0c:29:f0:bc:33 -netdev tap,id=net0 -vnc
> 135.207.127.181:1 <http://135.207.127.181:1>
You are not using kvm. Add --enable-kvm to the command line.
Paolo
next prev parent reply other threads:[~2013-07-01 21:54 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-01 21:51 [Qemu-devel] Significant slowdown after qemu-kvm-1.2.0 jinho hwang
2013-07-01 21:54 ` Paolo Bonzini [this message]
-- strict thread matches above, loose matches on Subject: below --
2013-07-01 22:24 [Qemu-devel] " jinho hwang
2013-07-01 23:48 ` [Qemu-devel] " Andreas Färber
2013-07-02 12:47 ` jinho hwang
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