Date: Mon, 02 May 2016 19:28:25 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 209202] [PATCH] [powermac_thermal] In-Kernel PowerMac fan control does not effectively regulate some quad core models Message-ID: <bug-209202-8-vvsO4GNSdq@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-209202-8@https.bugs.freebsd.org/bugzilla/> References: <bug-209202-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D209202 Mark Millard <markmi@dsl-only.net> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |markmi@dsl-only.net --- Comment #2 from Mark Millard <markmi@dsl-only.net> --- (In reply to gmbroome from comment #1) I'm the author of "PowerMac G5 quad-core, CPU A1 DIODE TEMP" from back in 2015-Jan. At the time I had side by side comparison machines that were a mix of worki= ng well vs. overheating. My conclusion was that the cooling systems were in a failure mode for those overheating --since other matching machines were doi= ng fine. As I remember Mac OS X had fancier handling of the issue that prevented crashing by forcing idle time in addition to fan-speed control but the resu= lt was a large difference in performance for "works well" vs. "overheating" for the same load. At the time some FreeBSD changes were made by Justin Hibbits that did impro= ve things some for the problem machines. But the overheating machines were pre= tty far gone and I gave up on them. I returned those that were overheating. So I no longer have a test-context = for overheating. --=20 You are receiving this mail because: You are the assignee for the bug.=
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