On 03.10.2016 11:45, kp kirchdoerfer wrote:
> Am Montag, 3. Oktober 2016, 10:41:05 schrieb Andrew:
>> On 02.10.2016 23:37, Erich Titl wrote:
>>> Hi Andrew
>>>
>>> Am 02.10.2016 um 19:58 schrieb Andrew:
>>>> On 02.10.2016 20:45, Erich Titl wrote
>>>>
>>> :...
>>> :
>>>>> We need to find out if this is an issue for the majority of our users.
>>>>> most of the drivers will probably just work as they work in standad
>>>>> distros.
>>>> This is issue for everybody who uses intel server cards in high-load
>>>> applications.
>>> Yes and this is why I asked if this was an issue for the _majority_
>> I don't know statistics how much people uses LEAF as home box/small
>> office router, and how much people uses LEAF somewhere in production
>> environment with high traffic.
>> I know at least some people who uses LEAF in production (access
>> servers/borders/etc), and I know only one case of usage as office
>> router(just because soho router in that place frequently hangs).
>>
>>> ...
>>>
>>>> Actually intel NIC card is the only available choice for high-troughput
>>>> routing. Other cards have too high CPU usage, or starts to drop packets
>>>> at 60-70% of bandwidth usage.
>>> So on a Gbit card you would have a throughput of roughly 600 Mbit. For
>>> most users and I said _most_ users they will never be able to buy that
>>> much power.
>>>
>>> And unless you have a massive parallel system you will have difficulties
>>> to pass that much data through any kind of traffic management. I
>>> observed issues in that aera, never at NIC level.
>>>
>>> So - yes, if it isn't a home routing box,
>>>
>>>> it uses Intel NIC.
>>> Still the same question, is this an issue for the majority and therefore
>>> a killer criterion? It might well be so, but I would like to know numbers.
>>>
>>> I for once do not have any intel NICs in usage, but yes, I did use them
>>> a few years back and might have been happy to have hight troughput, but;
>>> even then I never had a saturation issue at hand. YMMV
>>>
>>> Still I would not consider it a killer criterion, but yes, if someone is
>>> willing to put in the effort to overcome limitations in that area,
>>> great. I understand that you are working in a high speed/throughput
>>> environment and there I see of course the usefulness of having
>>> specialized drivers, but I _guess_ the majority of our users are not
>>> limited there. They have problems in the integration of some of our
>>> packages as seen lately in the leaf-user list.
>>>
>>> cheers and yes, please if you have spare time to integrate those
>>> drivers, go for it.
>>>
>>> ET
>> It isn't too hard to integrate them. I'll try to update drivers to
>> latest version in master (which is 4.4-based), because there's no
>> 4.7-based branch in git.
> This was meant as testing what has to be done when moving to a newer kernl,
> prefrrably a LTS as well.
> And it occured that migrations issues will be with e1000e and igb.
>
> There will be enough time to solve once we move on.
>
> kp
Hi.

Drivers update seems to be trivial - I just placed new archives, and 
removed some compat patches (that were added because driver fails to 
built with 4.4 kernel). If all will be built OK, I'll push changes.

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