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Date: Tue, 01 Sep 2009 15:15:03 +0200
From: Kevin Wolf <kwolf@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH] qcow2: Order concurrent AIO requests on
	the	same unallocated cluster
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To: Avi Kivity <avi@redhat.com>
Cc: qemu-devel@nongnu.org, Gleb Natapov <gleb@redhat.com>

Avi Kivity schrieb:
> On 09/01/2009 03:29 PM, Kevin Wolf wrote:
>> Gleb Natapov schrieb:
>>    
>>>>> No really detailed numbers. Installation time for RHEL on qcow2/virtio
>>>>> went down from 34 min to 19 min, though.
>>>>>          
>>>> That's very impressive.  cache=none or cache=wt?
>>>>
>>>>        
>>> And how it compares with raw?
>>>      
>> I just ran another installation on raw and it took about 16:30 min.
>>
>> And with the next patch series that I'm going to send today we'll be in
>> the same region with qcow2.
>>    
> 
> Looks pretty good then.  Was that 'raw' as in 'disk partition', or as 
> 'raw file on ext3'?

raw file on ext3. As I said this is just manual ad-hoc testing on my
laptop, so you certainly can do better benchmarks than these. And I
think I'll do some later this week.

Kevin