Date: Mon, 31 Aug 2015 22:39 +0100 From: Dave <dave@dgmm.net> To: freebsd-questions@freebsd.org Subject: Re: system temperatures Message-ID: <1580689.71VicvVbGW@amd.asgard.uk> In-Reply-To: <55E4B2FA.9090501@hiwaay.net> References: <55E324C4.4010500@hiwaay.net> <1568095.rmZeycZDhO@amd.asgard.uk> <55E4B2FA.9090501@hiwaay.net>
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On Monday 31 August 2015 15:08:36 William A. Mahaffey III wrote: > On 08/31/15 13:42, Dave wrote: > > On Sunday 30 August 2015 10:49:34 you wrote: > >> It is convenient on my various linux boxen to use lm_sensors to retrieve > >> apparently accurate temps. for various system components (CPU's), as > >> well as data on fan speeds, etc. Under FreeBSD (9.3R-p21), sysctl > >> provides some of this info, but apparently inaccurately. It would be > >> sweet to fix that minor issue, seems like it would be a bit more than > >> just sweet for remote servers, etc. Do I file this as a problem report > >> of some sort ? If so, how do I go about doing that ? TIA & have a > >> nice weekend. > > It might be worth doing this: > > > > sysctl -a | grep temp > > dev.cpu.0.temperature: 42.0C > > dev.cpu.1.temperature: 42.0C > > dev.cpu.2.temperature: 42.0C > > dev.cpu.3.temperature: 42.0C > > dev.cpu.4.temperature: 42.0C > > dev.cpu.5.temperature: 42.0C > > dev.amdtemp.0.%desc: AMD CPU On-Die Thermal Sensors > > dev.amdtemp.0.%driver: amdtemp > > dev.amdtemp.0.%parent: hostb4 > > dev.amdtemp.0.sensor0.core0: 42.0C > > > > ...just to see what else might show up in relation to temperatures > > in the various sysctl variables. > > > > both healthd and xmbmon in their default states report a CPU temp of ~143c on my system. > > 42c is ~107F so that's not the problem. > > > Hmmmm .... OK, your command, followed by my usual incantation: > > > [root@kabini1, /etc, 3:00:06pm] 352 % sysctl -a | grep temp > amdtemp0: <AMD CPU On-Die Thermal Sensors> on hostb5 > net.inet6.ip6.use_tempaddr: 0 > net.inet6.ip6.temppltime: 86400 > net.inet6.ip6.tempvltime: 604800 > net.inet6.ip6.prefer_tempaddr: 0 > hw.usb.template: 0 > dev.cpu.0.temperature: 11.8C > dev.cpu.1.temperature: 11.8C > dev.cpu.2.temperature: 11.8C > dev.cpu.3.temperature: 11.8C > dev.amdtemp.0.%desc: AMD CPU On-Die Thermal Sensors > dev.amdtemp.0.%driver: amdtemp > dev.amdtemp.0.%parent: hostb5 > dev.amdtemp.0.sensor0.core0: 11.8C > [root@kabini1, /etc, 3:00:08pm] 353 % sysctl -A | egrep > '(temperature|usage)' > dev.cpu.0.temperature: 11.7C > dev.cpu.0.cx_usage: 100.00% 0.00% last 880us > dev.cpu.1.temperature: 11.7C > dev.cpu.1.cx_usage: 100.00% last 10us > dev.cpu.2.temperature: 11.7C > dev.cpu.2.cx_usage: 100.00% last 11us > dev.cpu.3.temperature: 11.7C > dev.cpu.3.cx_usage: 100.00% last 10us > [root@kabini1, /etc, 3:00:17pm] 354 % > > > I'd say it's off, room temp is around 76F, or about 26-ish C, & the CPU > is generating heat, so it can't be cooler (Thermodynamics). My CPU is an > AMD Sempron 3850, jaguar-kabini, quad core, fairly new, April 9 2014 to > be precise, exactly the day I bought it :-). I guess it's either > something mbd or too-new CPU, but that is rank speculation. Your numbers > look at least plausible, so I'd say you are good to go, just trying to > get myself there as well. Those CPU's are apparently fairly widely used > in laptops & low-end desktops, so while new-ish, they are certainly not > rare birds. I like the output of your command a bit better than mine, I > think I will adopt it :-) .... Any more info needed, don't hesitate. > > > [root@kabini1, /etc, 3:03:44pm] 354 % uname -a > FreeBSD kabini1.local 9.3-RELEASE-p24 FreeBSD 9.3-RELEASE-p24 #0: Sat > Aug 22 01:54:44 UTC 2015 > root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 > [root@kabini1, /etc, 3:03:47pm] 355 % > > I'm pretty much at the limit of what I can suggest, but thought at least checking the sysctl stuff might be useful since in my experience pretty much everything else which claims to be able to read system and/or CPU temperature tends to fail with massive over-readings. I'll be watching this thread with interest to see if anything useful for me turns up,
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