Date: Mon, 11 Feb 2008 17:26:06 -0500 From: Jason Morgan <jwm-freebsd-amd64@sentinelchicken.net> To: freebsd-amd64@freebsd.org Subject: Re: CFT: k8temp driver Message-ID: <20080211222606.GM46810@sentinelchicken.net> In-Reply-To: <43B6638B-D4F7-4142-A2EB-E724148E7589@fnop.net> References: <A611E395-3531-4026-B8B3-5EFA72BA48E1@FreeBSD.org> <20080210192916.GD46810@sentinelchicken.net> <43B6638B-D4F7-4142-A2EB-E724148E7589@fnop.net>
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On Mon, Feb 11, 2008 at 08:34:03PM +0000, Rui Paulo wrote: > > On Feb 10, 2008, at 7:29 PM, Jason Morgan wrote: > >> On Sun, Feb 10, 2008 at 03:59:04PM +0000, Rui Paulo wrote: >>> Hi, >>> Some AMD systems have two thermal sensors on both cores. I wrote a simple >>> driver to access these temperatures, but I don't have a system to test. >>> If >>> anyone has a AMD K8 system, I would love if you could test the k8temp >>> driver that I wrote based on the Linux one. >>> >>> Get it at: >>> http://people.freebsd.org/~rpaulo/k8temp.tgz >>> >>> Compile/test with: >>> $ tar xzvf k8temp.tgz && cd k8temp >>> $ make SYSDIR=/path/to/src/sys >>> # kldload ./k8temp.ko >>> >>> This is still pre-alpha quality, so please don't use it on a production >>> system. >>> >>> Thanks in advance. >> >> # uname -a >> FreeBSD numbuscus.skepsi.net 7.0-RC1 FreeBSD 7.0-RC1 #2: Wed Feb 6 >> 21:50:29 EST 2008 >> root@numbuscus.skepsi.net:/usr/obj/usr/src/sys/NUMBUSCUS.smp amd64 >> >> # dmesg >> CPU: AMD Athlon(tm) 64 X2 Dual Core Processor 4800+ (2500.11-MHz >> K8-class CPU) >> Origin = "AuthenticAMD" Id = 0x60fb1 Stepping = 1 >> Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP, >> MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX, >> FXSR,SSE,SSE2,HTT> >> Features2=0x2001<SSE3,CX16> >> AMD Features=0xea500800<SYSCALL,NX,MMX+,FFXSR,RDTSCP,LM,3DNow!+, >> 3DNow!> >> AMD Features2=0x11f<LAHF,CMP,SVM,ExtAPIC,CR8,Prefetch> >> Cores per package: 2 >> >> # sysctl -a | grep k8temp >> k8temp0: <AMD K8 Thermal Sensors> on hostb3 >> k8temp0: 15 7 5 -11 >> dev.k8temp.0.%desc: AMD K8 Thermal Sensors >> dev.k8temp.0.%driver: k8temp >> dev.k8temp.0.%parent: hostb3 >> dev.k8temp.0.sensor0.core0: 15 >> dev.k8temp.0.sensor0.core1: 8 >> dev.k8temp.0.sensor1.core0: 15 >> dev.k8temp.0.sensor1.core1: 15 > > Hmm, this seems low. Are you using any kind of super thermal cooling like > water cooling systems? I am not. Here is another set of readings and idle: # sysctl -a | grep k8temp k8temp0: <AMD K8 Thermal Sensors> on hostb3 k8temp0: 15 7 5 -11 dev.k8temp.0.%desc: AMD K8 Thermal Sensors dev.k8temp.0.%driver: k8temp dev.k8temp.0.%parent: hostb3 dev.k8temp.0.sensor0.core0: 13 dev.k8temp.0.sensor0.core1: 6 dev.k8temp.0.sensor1.core0: 13 dev.k8temp.0.sensor1.core1: 13 And here is another reading at full-power, building a kernel: # sysctl -a | grep k8temp k8temp0: <AMD K8 Thermal Sensors> on hostb3 k8temp0: 15 7 5 -11 dev.k8temp.0.%desc: AMD K8 Thermal Sensors dev.k8temp.0.%driver: k8temp dev.k8temp.0.%parent: hostb3 dev.k8temp.0.sensor0.core0: 27 dev.k8temp.0.sensor0.core1: 22 dev.k8temp.0.sensor1.core0: 27 dev.k8temp.0.sensor1.core1: 27 I use powerd to take reduce the MHz to 1000 when the system isn't loaded. Let me know if you want me to test something. HTH, ~Jason
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