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RE: [Xen-devel] SPEC cpu2000 will always fail for ia32 smp hvm guest

  • To: "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Zhao, Fan" <fan.zhao@xxxxxxxxx>
  • Date: Tue, 10 Oct 2006 23:43:02 +0800
  • Delivery-date: Tue, 10 Oct 2006 08:43:42 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcbsE9LlG4iA/t6NRXC2z5iON8pP/AAOk92QAAEtFYIAB2idgAABrqfnAAH8SYA=
  • Thread-topic: [Xen-devel] SPEC cpu2000 will always fail for ia32 smp hvm guest

If I assign 1G memory for native, 'cat /proc/meminfo' shows the MemTotal is 
1034672 KB, while 'cat /proc/meminfo' shows the MemTotal is 1033800 KB if 
assigning 1G memory for hvm guest.
>From my test, cpu2k needs no more than 900M memory to run with 4 users. If I 
>assign 1.2G memory for hvm guest, the free memory is more than what is freed 
>when assign 1G memory for native while running cpu2k, but it will still fail.

Best regards,

-----Original Message-----
From: Keir Fraser [mailto:Keir.Fraser@xxxxxxxxxxxx] 
Sent: 2006年10月10日 22:20
To: Zhao, Fan; xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] SPEC cpu2000 will always fail for ia32 smp hvm guest

On 10/10/06 15:02, "Zhao, Fan" <fan.zhao@xxxxxxxxx> wrote:

> Thanks for your comments. Actually, I do not give a swap partition for both
> native and hvm guest when I do the test.
> One point which deserves to mention is that the tests for hvm guest and xenu
> guest are based on the same image file, which helps to ensure that hvm and
> xenu guests share the same testing environment. At this point, xenu guest
> doesn't have a swap partition either, but cpu2k could run successfully with 1G
> memory in it.
> Another point for reference is that cpu2k with 4 users could pass on ia32e hvm
> guest with 1G memory, which also does not have a swap partition.

If you run 'cat /proc/meminfo' on native and on HVM, do the MemTotal figures
match up? If so, this must be an issue within the guest -- it would indicate
that we are providing the guest with the same amount of memory as was
available to it when running on native.

 -- Keir

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