From: "Kazu" <kazoo@r3.dion.ne.jp>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] objective benchmark?
Date: Tue, 16 May 2006 15:41:45 +0900 [thread overview]
Message-ID: <000e01c678b3$cd372460$0464a8c0@athlon> (raw)
In-Reply-To: 44695113.8040708@us.ibm.com
Anthony Liguori wrote:
> Mikhail Ramendik wrote:
>> Hello,
>>
>> As I have reported before, it seems that on my host linux system kqemu
does
>> not work with guest win98se.
>>
>> Is there any benchmark that I could run in the guest, with and without
kqemu,
>> to check if this is so objectively? (Ideally I'd like two benchmarks -
16-bit
>> and 32-bit code).
>>
>
> The vast majority of guest benchmarking programs are going to give you
> invalid results. The clock within QEMU (rdtsc and wall clock) are not
> very reliable and this is going to skew the results.
>
If you set /proc/sys/dev/rtc/max-user-freq to 1024 and disable cpuspeed
service that is related to SpeedStep/PowerNow! on a host OS, the clock in
guest OS works fine.
I checked it on i686/x86_64 Linux host.
Regards,
Kazu
next prev parent reply other threads:[~2006-05-16 6:41 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-15 18:03 [Qemu-devel] objective benchmark? Mikhail Ramendik
2006-05-15 20:25 ` Natalia Portillo
2006-05-15 21:13 ` Mikhail Ramendik
2006-05-16 0:07 ` NyOS
2006-05-16 4:12 ` Anthony Liguori
2006-05-16 6:41 ` Kazu [this message]
2006-05-16 6:55 ` Christian MICHON
2006-05-16 9:26 ` Kazu
2006-05-16 10:23 ` Christian MICHON
2006-05-17 7:24 ` Kazu
2006-05-16 11:48 ` Lonnie Mendez
2006-05-17 7:24 ` Kazu
2006-05-17 9:09 ` Lonnie Mendez
2006-05-17 19:18 ` Fabrice Bellard
-- strict thread matches above, loose matches on Subject: below --
2006-05-16 12:53 Ben Taylor
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