[Intel-wired-lan] I218-LM uses > 1 W with low traffic

[Intel-wired-lan] I218-LM uses > 1 W with low traffic

[Paul Menzel]

Dear Linux folks,


On a Dell Latitude E7250 with Debian sid/unstable, PowerTOP 2.14 reports 
the network device uses over 1.5 Watt, which is almost ten percent of 
the whole system.

       1.62 W    435,9 pkts/s                Device 
Netzwerkschnittstelle: eno1 (e1000e)

     $ lspci -nn | grep Ether
     00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet 
Connection (3) I218-LM [8086:15a2] (rev 03)
     $ uname -a
     Linux ersatz 5.17.0-trunk-amd64 #1 SMP PREEMPT Debian 5.17.1-1~exp1 
(2022-03-29) x86_64 GNU/Linux

 From atop:

     NET |  eno1      0% |  pcki    2421 |  pcko    2194 |  sp 1000 Mbps 
|  si 1501 Kbps  | so  140 Kbps  | erri       0  | erro       0  | drpo 
      0  |

So I receive 1.5 Mbps, and send 0.14 Mbps.

Is such high energy usage expected of the network hardware?


Kind regards,

Paul

[Intel-wired-lan] I218-LM uses > 1 W with low traffic

[Neftin, Sasha]

On 4/6/2022 13:09, Paul Menzel wrote:
> Dear Linux folks,
> 
> 
> On a Dell Latitude E7250 with Debian sid/unstable, PowerTOP 2.14 reports 
> the network device uses over 1.5 Watt, which is almost ten percent of 
> the whole system.
> 
>  ????? 1.62 W??? 435,9 pkts/s??????????????? Device 
> Netzwerkschnittstelle: eno1 (e1000e)
> 
>  ??? $ lspci -nn | grep Ether
>  ??? 00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet 
> Connection (3) I218-LM [8086:15a2] (rev 03)
>  ??? $ uname -a
>  ??? Linux ersatz 5.17.0-trunk-amd64 #1 SMP PREEMPT Debian 5.17.1-1~exp1 
> (2022-03-29) x86_64 GNU/Linux
> 
>  From atop:
> 
>  ??? NET |? eno1????? 0% |? pcki??? 2421 |? pcko??? 2194 |? sp 1000 Mbps 
> |? si 1501 Kbps? | so? 140 Kbps? | erri?????? 0? | erro?????? 0? | drpo 
>  ???? 0? |
> 
> So I receive 1.5 Mbps, and send 0.14 Mbps.
> 
> Is such high energy usage expected of the network hardware?
Hello Paul,
It is not the power consumption we expected.How do you measure it? (as I 
know powertop does not show it)
We will try to find out about power consumption.
> 
> 
> Kind regards,
> 
> Paul
Thanks,
Sasha
> _______________________________________________
> Intel-wired-lan mailing list
> Intel-wired-lan at osuosl.org
> https://lists.osuosl.org/mailman/listinfo/intel-wired-lan

[Intel-wired-lan] I218-LM uses > 1 W with low traffic

[Paul Menzel]

Dear Sasha,


Am 07.04.22 um 13:03 schrieb Neftin, Sasha:
> On 4/6/2022 13:09, Paul Menzel wrote:

>> On a Dell Latitude E7250 with Debian sid/unstable, PowerTOP 2.14 
>> reports the network device uses over 1.5 Watt, which is almost ten 
>> percent of the whole system.
>>
>> ?????? 1.62 W??? 435,9 pkts/s??????????????? Device Netzwerkschnittstelle: eno1 (e1000e)
>>
>> ???? $ lspci -nn | grep Ether
>> ???? 00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet Connection (3) I218-LM [8086:15a2] (rev 03)
>> ???? $ uname -a
>> ???? Linux ersatz 5.17.0-trunk-amd64 #1 SMP PREEMPT Debian 5.17.1-1~exp1 (2022-03-29) x86_64 GNU/Linux
>>
>> ?From atop:
>>
>> ???? NET |? eno1????? 0% |? pcki??? 2421 |? pcko??? 2194 |? sp 1000 Mbps |? si 1501 Kbps? | so? 140 Kbps? | erri?????? 0? | erro?????? 0? | drpo ????? 0? |
>>
>> So I receive 1.5 Mbps, and send 0.14 Mbps.
>>
>> Is such high energy usage expected of the network hardware?

> It is not the power consumption we expected.How do you measure it? (as I 
> know powertop does not show it)

On my system, PowerTOP shows it. Though maybe it?s a bug in PowerTOP?s 
power usage estimation algorithm. No idea. At least with no network 
cable connected, it shows zero Watts being used.

         0 mW      0,0 pkts/s  Netzwerkschnittstelle: eno1 (e1000e)


> We will try to find out about power consumption.

Thank you very much.


Kind regards,

Paull

[Intel-wired-lan] I218-LM uses > 1 W with low traffic

[Neftin, Sasha]

On 4/7/2022 18:58, Paul Menzel wrote:
> Dear Sasha,
> 
> 
> Am 07.04.22 um 13:03 schrieb Neftin, Sasha:
>> On 4/6/2022 13:09, Paul Menzel wrote:
> 
>>> On a Dell Latitude E7250 with Debian sid/unstable, PowerTOP 2.14 
>>> reports the network device uses over 1.5 Watt, which is almost ten 
>>> percent of the whole system.
>>>
>>> ?????? 1.62 W??? 435,9 pkts/s??????????????? Device 
>>> Netzwerkschnittstelle: eno1 (e1000e)
>>>
>>> ???? $ lspci -nn | grep Ether
>>> ???? 00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet 
>>> Connection (3) I218-LM [8086:15a2] (rev 03)
>>> ???? $ uname -a
>>> ???? Linux ersatz 5.17.0-trunk-amd64 #1 SMP PREEMPT Debian 
>>> 5.17.1-1~exp1 (2022-03-29) x86_64 GNU/Linux
>>>
>>> ?From atop:
>>>
>>> ???? NET |? eno1????? 0% |? pcki??? 2421 |? pcko??? 2194 |? sp 1000 
>>> Mbps |? si 1501 Kbps? | so? 140 Kbps? | erri?????? 0? | erro?????? 0  
>>> | drpo ????? 0? |
>>>
>>> So I receive 1.5 Mbps, and send 0.14 Mbps.
>>>
>>> Is such high energy usage expected of the network hardware?
> 
>> It is not the power consumption we expected.How do you measure it? (as 
>> I know powertop does not show it)
> 
> On my system, PowerTOP shows it. Though maybe it?s a bug in PowerTOP?s 
> power usage estimation algorithm. No idea. At least with no network 
> cable connected, it shows zero Watts being used.
> 
>  ??????? 0 mW????? 0,0 pkts/s? Netzwerkschnittstelle: eno1 (e1000e)
> 
> 
>> We will try to find out about power consumption.
> 
> Thank you very much.The power consumption during normal operation mode expected to be ~600mW.
> 
> 
> Kind regards,
> 
> Paull

Re: [Intel-wired-lan] I218-LM uses > 1 W with low traffic

[Paul Menzel]

Dear Sasha,


Am 14.04.22 um 09:07 schrieb Neftin, Sasha:
> On 4/7/2022 18:58, Paul Menzel wrote:

>> Am 07.04.22 um 13:03 schrieb Neftin, Sasha:
>>> On 4/6/2022 13:09, Paul Menzel wrote:
>>
>>>> On a Dell Latitude E7250 with Debian sid/unstable, PowerTOP 2.14 
>>>> reports the network device uses over 1.5 Watt, which is almost ten 
>>>> percent of the whole system.
>>>>
>>>>        1.62 W    435,9 pkts/s                Device Netzwerkschnittstelle: eno1 (e1000e)
>>>>
>>>>      $ lspci -nn | grep Ether
>>>>      00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet Connection (3) I218-LM [8086:15a2] (rev 03)
>>>>      $ uname -a
>>>>      Linux ersatz 5.17.0-trunk-amd64 #1 SMP PREEMPT Debian 5.17.1-1~exp1 (2022-03-29) x86_64 GNU/Linux
>>>>
>>>>  From atop:
>>>>
>>>>      NET |  eno1      0% |  pcki    2421 |  pcko    2194 |  sp 1000 Mbps |  si 1501 Kbps  | so  140 Kbps  | erri       0  | erro       0 | drpo       0  |
>>>>
>>>> So I receive 1.5 Mbps, and send 0.14 Mbps.
>>>>
>>>> Is such high energy usage expected of the network hardware?
>>
>>> It is not the power consumption we expected.How do you measure it? 
>>> (as I know powertop does not show it)
>>
>> On my system, PowerTOP shows it. Though maybe it’s a bug in PowerTOP’s 
>> power usage estimation algorithm. No idea. At least with no network 
>> cable connected, it shows zero Watts being used.
>>
>>          0 mW      0,0 pkts/s  Netzwerkschnittstelle: eno1 (e1000e)
>>
>>
>>> We will try to find out about power consumption.
>>
>> Thank you very much.
> 
> The power consumption during normal operation mode expected to be ~600mW.

With Linux 6.1.4 I still see high power usage:

       4.01 W     26,0 pkts/s                Device 
Netzwerkschnittstelle: eno1 (e1000e)

Disconnecting the cable, it still shows high usage:

       5.34 W      0,0 pkts/s                Device 
Netzwerkschnittstelle: eno1 (e1000e)

Were you able to reproduce it on your test systems?


Kind regards,

Paul
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Re: [Intel-wired-lan] I218-LM uses > 1 W with low traffic

[Neftin, Sasha]

On 1/19/2023 16:15, Paul Menzel wrote:
> Dear Sasha,
> 
> 
> Am 14.04.22 um 09:07 schrieb Neftin, Sasha:
>> On 4/7/2022 18:58, Paul Menzel wrote:
> 
>>> Am 07.04.22 um 13:03 schrieb Neftin, Sasha:
>>>> On 4/6/2022 13:09, Paul Menzel wrote:
>>>
>>>>> On a Dell Latitude E7250 with Debian sid/unstable, PowerTOP 2.14 
>>>>> reports the network device uses over 1.5 Watt, which is almost ten 
>>>>> percent of the whole system.
>>>>>
>>>>>        1.62 W    435,9 pkts/s                Device 
>>>>> Netzwerkschnittstelle: eno1 (e1000e)
>>>>>
>>>>>      $ lspci -nn | grep Ether
>>>>>      00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet 
>>>>> Connection (3) I218-LM [8086:15a2] (rev 03)
>>>>>      $ uname -a
>>>>>      Linux ersatz 5.17.0-trunk-amd64 #1 SMP PREEMPT Debian 
>>>>> 5.17.1-1~exp1 (2022-03-29) x86_64 GNU/Linux
>>>>>
>>>>>  From atop:
>>>>>
>>>>>      NET |  eno1      0% |  pcki    2421 |  pcko    2194 |  sp 1000 
>>>>> Mbps |  si 1501 Kbps  | so  140 Kbps  | erri       0  | erro       
>>>>> 0 | drpo       0  |
>>>>>
>>>>> So I receive 1.5 Mbps, and send 0.14 Mbps.
>>>>>
>>>>> Is such high energy usage expected of the network hardware?
>>>
>>>> It is not the power consumption we expected.How do you measure it? 
>>>> (as I know powertop does not show it)
>>>
>>> On my system, PowerTOP shows it. Though maybe it’s a bug in 
>>> PowerTOP’s power usage estimation algorithm. No idea. At least with 
>>> no network cable connected, it shows zero Watts being used.
>>>
>>>          0 mW      0,0 pkts/s  Netzwerkschnittstelle: eno1 (e1000e)
>>>
>>>
>>>> We will try to find out about power consumption.
>>>
>>> Thank you very much.
>>
>> The power consumption during normal operation mode expected to be ~600mW.
> 
> With Linux 6.1.4 I still see high power usage:
> 
>        4.01 W     26,0 pkts/s                Device 
> Netzwerkschnittstelle: eno1 (e1000e)
> 
> Disconnecting the cable, it still shows high usage:
> 
>        5.34 W      0,0 pkts/s                Device 
> Netzwerkschnittstelle: eno1 (e1000e)
> 
> Were you able to reproduce it on your test systems?
I  didn't reproduce.
I do not know if we can trust the powertop tool. (LAN power consumption 
could be measured via a resistor on the controller connection lanes.)
Did you contact your vendors regards this problem?
> 
> 
> Kind regards,
> 
> Paul

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Re: [Intel-wired-lan] I218-LM uses > 1 W with low traffic

[Paul Menzel]

Dear Sasha,


Thank you for your quick reply.

Am 23.01.23 um 08:15 schrieb Neftin, Sasha:
> On 1/19/2023 16:15, Paul Menzel wrote:

>> Am 14.04.22 um 09:07 schrieb Neftin, Sasha:
>>> On 4/7/2022 18:58, Paul Menzel wrote:
>>
>>>> Am 07.04.22 um 13:03 schrieb Neftin, Sasha:
>>>>> On 4/6/2022 13:09, Paul Menzel wrote:
>>>>
>>>>>> On a Dell Latitude E7250 with Debian sid/unstable, PowerTOP 2.14 
>>>>>> reports the network device uses over 1.5 Watt, which is almost ten 
>>>>>> percent of the whole system.
>>>>>>
>>>>>>        1.62 W    435,9 pkts/s                Device Netzwerkschnittstelle: eno1 (e1000e)
>>>>>>
>>>>>>      $ lspci -nn | grep Ether
>>>>>>      00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet Connection (3) I218-LM [8086:15a2] (rev 03)
>>>>>>      $ uname -a
>>>>>>      Linux ersatz 5.17.0-trunk-amd64 #1 SMP PREEMPT Debian 5.17.1-1~exp1 (2022-03-29) x86_64 GNU/Linux
>>>>>>
>>>>>>  From atop:
>>>>>>
>>>>>>      NET |  eno1      0% |  pcki    2421 |  pcko    2194 |  sp 1000 Mbps |  si 1501 Kbps  | so  140 Kbps  | erri       0  | erro 0 | drpo       0  |
>>>>>>
>>>>>> So I receive 1.5 Mbps, and send 0.14 Mbps.
>>>>>>
>>>>>> Is such high energy usage expected of the network hardware?
>>>>
>>>>> It is not the power consumption we expected.How do you measure it? 
>>>>> (as I know powertop does not show it)
>>>>
>>>> On my system, PowerTOP shows it. Though maybe it’s a bug in 
>>>> PowerTOP’s power usage estimation algorithm. No idea. At least with 
>>>> no network cable connected, it shows zero Watts being used.
>>>>
>>>>          0 mW      0,0 pkts/s  Netzwerkschnittstelle: eno1 (e1000e)
>>>>
>>>>> We will try to find out about power consumption.
>>>>
>>>> Thank you very much.
>>>
>>> The power consumption during normal operation mode expected to be 
>>> ~600mW.
>>
>> With Linux 6.1.4 I still see high power usage:
>>
>>        4.01 W     26,0 pkts/s                Device Netzwerkschnittstelle: eno1 (e1000e)
>>
>> Disconnecting the cable, it still shows high usage:
>>
>>        5.34 W      0,0 pkts/s                Device Netzwerkschnittstelle: eno1 (e1000e)
>>
>> Were you able to reproduce it on your test systems?
> I  didn't reproduce.

On what system did you try it?

> I do not know if we can trust the powertop tool. (LAN power consumption 
> could be measured via a resistor on the controller connection lanes.)

I do not know the code of PowerTOP. I also do not have the equipment to 
measure it directly.

> Did you contact your vendors regards this problem?

No. First the Dell Latitude E7250 is from 2015, so long out of warranty. 
Secondly, despite having Ubuntu GNU/Linux preinstalled, the Dell support 
personal reply, that they only support Microsoft Windows, and that the 
support for GNU/Linux is given by the “community”.

It should be possible to get the power consumption via software on Intel 
devices from the last ten years. How are you doing it in your QA setups?


Kind regards,

Paul
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