netdev - Re: [RFC PATCH] net: ethtool: do runtime PM outside RTNL

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Date: Wed, 06 Dec 2023 10:50:10 +0100
From: Johannes Berg <johannes@...solutions.net>
To: Marc MERLIN <marc@...lins.org>
Cc: netdev@...r.kernel.org, Jesse Brandeburg <jesse.brandeburg@...el.com>, 
 Tony Nguyen <anthony.l.nguyen@...el.com>, linux-wireless@...r.kernel.org,
 ilw@...ux.intel.com, Heiner Kallweit <hkallweit1@...il.com>
Subject: Re: [RFC PATCH] net: ethtool: do runtime PM outside RTNL

On Tue, 2023-12-05 at 15:15 -0800, Marc MERLIN wrote:
> > 
> > Power est.              Usage       Events/s    Category       Description
> >   24.1 W     59.6 pkts/s                Device         Network interface: wlp9s0 (iwlwifi)

That seems excessive, I'm not sure it's even _possible_ for it to draw
that much power?

> > The battery reports a discharge rate of 36.1 W
> 
> Obviously unloading iwlwifi fixes it:
> > The battery reports a discharge rate of 26.0 W

That would put it closer to 10W, but even that seems too much... no idea
though.

> Is this something I should persue separately on
> linux-wireless@...r.kernel.org or ilw@...ux.intel.com or elsewhere?
> 

Certainly separately, maybe put a bug on bugzilla per
https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi/debugging

johannes