From mboxrd@z Thu Jan  1 00:00:00 1970
From: Neftin, Sasha <sasha.neftin@intel.com>
Date: Thu, 7 Apr 2022 14:03:16 +0300
Subject: [Intel-wired-lan] I218-LM uses > 1 W with low traffic
In-Reply-To: <bff5f4d7-bb85-e3fa-b8b1-76d1b8e0133a@molgen.mpg.de>
References: <bff5f4d7-bb85-e3fa-b8b1-76d1b8e0133a@molgen.mpg.de>
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To: intel-wired-lan@osuosl.org
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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
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