From: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@gmail.com>
To: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Subject: Network cooling device and how to control NIC speed on thermal condition
Date: Tue, 25 Apr 2017 10:36:28 +0200 [thread overview]
Message-ID: <CAHKzcEMQPQzg6PYCSuv7Ufad+4AZ2gnqMgz3-VH5NTeb_pv4zQ@mail.gmail.com> (raw)
Hi,
I am not much aware of linux networking architecture so I'd like to
ask first before will start to dig into the code. Appreciate any
feedback.
I am looking on Linux thermal framework and on how to cool down the
system effectively when it hits thermal condition. Already existing
cooling methods cpu_cooling and clock_cooling are good. However, I
wanted to go further and dynamically control also a switch ports'
speed based on thermal condition. Lowering speed means less power,
less power means lower temp.
Is there any in-kernel interface to configure switch port/NIC from other driver?
Is there any mechanism to power save, when port/interface is not
really used (not much or low data traffic), embedded in networking
stack or is it a task for NIC driver itself ?
I was thinking to create net_cooling device similarly to cpu_cooling
device which cool down the system scaling down cpu freq. net_cooling
could lower down interface speed (or tune more parameters to achieve
). Do you thing could this work form networking stack perspective?
Any pointers to the code or a doc highly appreciated.
Thanks,
/Waldek
next reply other threads:[~2017-04-25 8:37 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-25 8:36 Waldemar Rymarkiewicz [this message]
2017-04-25 13:17 ` Network cooling device and how to control NIC speed on thermal condition Andrew Lunn
2017-04-25 13:45 ` Alan Cox
2017-04-28 8:04 ` Waldemar Rymarkiewicz
2017-04-28 11:56 ` Andrew Lunn
2017-05-08 8:08 ` Waldemar Rymarkiewicz
2017-05-08 14:02 ` Andrew Lunn
2017-05-15 14:14 ` Waldemar Rymarkiewicz
2017-04-25 16:23 ` Florian Fainelli
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