From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============2389821780189356868==" MIME-Version: 1.0 From: George Barrett Subject: Re: [Powertop] Fwd: Suggested tunables addition: sysctl kernel.core_pattern Date: Tue, 05 Jan 2016 11:49:23 +1100 Message-ID: <1451954963.2932.0@mail.bob131.so> In-Reply-To: 20160105004749.GA18569@noemi.bahnhof.se To: powertop@lists.01.org List-ID: --===============2389821780189356868== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable I primarily use my laptop for hacking on my own little projects, so = this occurs fairly frequently On Tue, Jan 5, 2016 at 11:47 AM, Magnus Fromreide = wrote: > On Sat, Jan 02, 2016 at 09:00:57PM +1100, George Barrett wrote: >> Hi, first off thanks for the great tool! >> = >> I currently rely on a systemd unit file present in the Fedora = >> package for >> powertop to do most of my laptop's power saving config on boot, and = >> it works >> great. However, I've noticed a missing tunable which might be = >> helpful for >> some folks: setting the kernel.core_pattern sysctl parameter to = >> |/dev/null >> or similar. On my x220, this parameter set to it's default causes >> systemd-coredump to peg a single core, sometimes for quite an = >> extended >> period of time. On many devices this would cause substantially = >> greater heat >> output, and most importantly substantially higher power consumption. > = > I have to ask, why do you get enough core dumps for this to be a = > problem? > Wouldn't a better solution be to fix the application that dumps core? > = > /MF --===============2389821780189356868==--