Re: [Qemu-devel] [PATCH] qcow2: Order concurrent AIO requests on the same unallocated cluster

[Kevin Wolf]

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