From mboxrd@z Thu Jan 1 00:00:00 1970 From: Neftin, Sasha Date: Thu, 14 Apr 2022 10:07:18 +0300 Subject: [Intel-wired-lan] I218-LM uses > 1 W with low traffic In-Reply-To: <20e6d930-c50f-45b7-f98e-3d11c35a09d1@molgen.mpg.de> References: <9505bc04-edbd-ab64-bc95-a06150bbba38@intel.com> <20e6d930-c50f-45b7-f98e-3d11c35a09d1@molgen.mpg.de> Message-ID: <9a5af9c0-e58a-250c-b030-05e3b73035b9@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: intel-wired-lan@osuosl.org List-ID: 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