Re: windows domU disk performance graph comparing hvm vs stubdom vs pv drivers

[Keith Coleman <list.keith@scaltro.com>]

On Tue, Feb 23, 2010 at 9:44 AM, Konrad Rzeszutek Wilk
<konrad.wilk@oracle.com> wrote:
>> > > That is strange because in that configuration I get a far better
>> > > disk bandwidth with stubdoms compared to qemu running in dom0.
>> > >
>> >
>> > What type of test are you doing?
>> >
>>
>> these are the results I got a while ago running a simple "dd if=/dev/zero
>> of=file" for 10 seconds:
>
> Keep in mind that iometer (both the Windows a Linux version) by default
> do random seak of 50% reads and 50% writes. They do have some set of
> templates - "web server", "file server", "database server" that change
> the read/write ratio, size of blocks, and the queue length.(fyi, you can
> use fio to set the same values, if you can't get dynamo to compile on
> your Linux box).
>
> Keith, which workload did you choose?
>

Web server workload was used in my graph.


Keith Coleman