RE: [Xen-ia64-devel] [PATCH] Add event callback for xen/ia64

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

>From: Alex Williamson [mailto:alex.williamson@xxxxxx]
>Sent: 2006年4月12日 10:40
>On Wed, 2006-04-12 at 10:18 +0800, Tian, Kevin wrote:
>> Hi, Alex,
>>      Could you provide something about your test environment,
>> and then I can try identical steps as yours to see what's the
>> bottleneck? For example:
>>      - dom0 memory size
>>      - domU memory size
>>      - How do you measure the network throughput?
>>
>>      BTW, Isaku's patch is upon Rev 9492, and then I'll also
>> measure upon that version.
>
>Hi Kevin,
>
>   My dom0 memory is the default 512MB, domU is 1GB (7GB in the
>system,
>2-way w/ default vcpu to phys cpu mappings).  My throughput test is
>simply pulling a ~300MB file from a local server using wget.  Something
>like:
>
>wget -O /dev/null http://local.server/big_file
>
>Wget provides a progress report and average throughput at the end of
>the
>transfer.  Let me know if you get different results, I tried several
>times and seemed to get consistently degraded performance with the
>event
>callback patch.  Thanks,
>

OK, thanks for info. I'm currently building the tree and will test soon.
BTW, do you have any extra steps beside normal flow to setup the 
network for domU?

Another side question I'm curious is, how about the bandwidth of 
your physical NIC? Is 10M an acceptable data to you regarding 
Isaku's p2m patch, which may reveal us the space for improvement
later? :-)

Thanks,
Kevin

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