Date: Tue, 23 Aug 2011 07:44:21 -0500 From: Nathan Whitehorn <nwhitehorn@freebsd.org> To: Marius Strobl <marius@alchemy.franken.de> Cc: freebsd-sparc64@freebsd.org Subject: Re: Blade 1000 - fan control and / or environmental monitoring? Message-ID: <4E53A0A5.6010304@freebsd.org> In-Reply-To: <20110823120414.GB73912@alchemy.franken.de> References: <20110822204539.69efd311.torfinn.ingolfsen@broadpark.no> <20110823120414.GB73912@alchemy.franken.de>
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On 08/23/11 07:04, Marius Strobl wrote: > On Mon, Aug 22, 2011 at 08:45:39PM +0200, Torfinn Ingolfsen wrote: >> I notice that when my Blade 1000 runs FreeBSD (now upgraded to 8.2-stable), >> the fans runn at full blast. >> But when it runs Solaris, the speed of the fans is regulated. >> >> Do we have any fan control / enironmental montoring for Blade 1000 in FreeBSD? > No, FreeBSD/sparc64 doesn't support OS-based fan control. FreeBSD/powerpc > has a one-off solution for fan control in the kernel but I think the > proper way to implement this is with a userland daemon via a MI actuators > and sensors framework with just a safety belt in the kernel that switches > fans to full speed in case the daemon dies or the machine panics (in > principle that also is how Open(Solaris) controls the fans in B1K). > Unfortunately such a framework hasn't happened so far ... > The stuff we wrote for PowerPC could become MI with an svn mv. The userland daemon approach is supported, though it could be supported better, in addition to a simpleminded kernel process that runs in the absence of that daemon so that the machine does not howl like a banshee during the installer and single-user-mode. -Nathan
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