Date: Mon, 21 Jul 2008 16:56:10 +0300 From: Achilleas Mantzios <achill@matrix.gatewaynet.com> To: iwrTech@iwr.ru.ac.za Cc: freebsd-questions@freebsd.org Subject: Re: Monitoring CPU temperature: mbmon shows 201 degrees C Message-ID: <200807211656.10874.achill@matrix.gatewaynet.com> In-Reply-To: <48849FFD.10285.C71CED5@iwrtech.iwr.ru.ac.za> References: <48849FFD.10285.C71CED5@iwrtech.iwr.ru.ac.za>
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=CE=A3=CF=84=CE=B9=CF=82 Monday 21 July 2008 15:41:01 =CE=BF/=CE=B7 DA Fors= yth =CE=AD=CE=B3=CF=81=CE=B1=CF=88=CE=B5: > From: Achilleas Mantzios <achill@matrix.gatewaynet.com> >=20 > > Hi, i have had various crashes and segfaults in the last hot days > > (room temp about 30 deg C). I tried to monitor CPU temp with mbmon, > > which shows a very big value in COU temperature: >=20 > > I also opened the case in order to get ventilated with fresh air from > > the room.=20 >=20 > Actually, that doesn't work, your components will get hotter. This=20 > is because the case provides a through flow environment where air is=20 > forced to flow over most of the components most of the time. By=20 > opening the case you remove the force, and now have to rely on=20 > convection. >=20 > What you want to do is make sure all the fans are running freely. > Especially the processor fan. It may have stopped silently an dthat=20 > would definitely cause crashes. >=20 > A fan at the front of the case blowing IN is more effective than one=20 > on the back blowing out, so if there isn't one on the front, add one. > The 80 to 120mm ones can be very quiet and some can control their own=20 > speed if your motherboard cannot do it. If one can blow in the front=20 > and directly on the harddrives then that is a bonus, cool harddrives=20 > last longer. >=20 > The basic idea of a case is to have air coming in the front and=20 > exiting at the rear. So make sure all your fans are blowing in the=20 > right direction. >=20 > My office goes to 38C in summer, and all 5 computers just keep on=20 > going, using the principles above. I fitted a fan to the UPS as well=20 > (-: >=20 >=20 My box has 3 fans, one on the case blowing from outside=3D>inside, one in the power supply and one on the CPU. In the evening, i will have the case/board inside blown/cleaned with air, i am gonna close the case, and i am gonna tune BIOS to fail-safe settings. Apart from that, i would like to have a reliable tool to monitor temperatur= e. Is there anything in mind? >=20 >=20 > -- > DA Fo rsyth Network Supervisor > Principal Technical Officer -- Institute for Water Research > http://www.ru.ac.za/institutes/iwr/ >=20 >=20 >=20 =2D-=20 Achilleas Mantzios
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