Re: CPU heating!
Hi, [ I'm late on thread, so briefly ] If you get desperate overheating & crashes, try eg /usr/sbin/powerd -a min -b min -n min Thats what I'm doing on one box, till I can remove, review/ regrease. One can also observe subsets of values from sysctl -a | grep temp in a while (1) sysctl .. sleep 2 end loop, while re-invoking various powerd -v with different params. Cheers, Julian -- Julian Stacey, BSD Unix Linux C Sys Eng Consultants Munich http://berklix.com Mail plain text; Not quoted-printable, Not HTML, Not base 64. Reply below text sections not at top, to avoid breaking cumulative context. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: CPU heating!
On Thursday 17 February 2011 21:20:57 Chuck Swiger wrote: > On Feb 17, 2011, at 3:06 PM, Mario Lobo wrote: > >> Most computer cases are designed with front-to-back airflow (ie, intake > >> fans in the front, exhaust fans and the PSU in the back) and cool more > >> effectively with the case on > > > > Well, in my case, with the "BEFORE" situation, if I had the side case > > cover on, the temps would be even higher ! > > Are they? Well, that suggests something could be wrong with your case > ventilation-- perhaps a stuck (or even reversed) fan. > They are neither reversed nor stuck. I am truly paranoid about that. I have a front fan pulling in and a back fan pushing out. I even have one of the front device covers out since I bought this CPU. That's the air flow since day one. I can't say that nothing changed inside the machine since I added a HD to it but the heating came long after that. > I know, it's not as interesting as the possibility that different versions > of FreeBSD present different CPU load, but if you aren't controlling for > major factors like the case being opened or closed, or using different > coolers, then there's little point in worrying about whether your > load-testing of the software is accurate. I didn't mean to imply that the different versions of FBSD was THE cause of heating. But the fact is that it started to happen after the upgrade. It's probably just a coincidence. The fact is that downgrading to 8.1 improved the cooling. Very little ( -1 degree, that's true) but improved nonetheless. You're certainly right. My load testing method isn't accurate but my observations are. Even if your measuring instrument is not accuratly calibrated, the absolute value of the measurement can not be trusted, but the difference of two measurements with the same instrument can. The instrument being my hardware in this case. I pointed the difference in load between 8.1 and 8.2 when compiling, as "something I noticed". Just that. -- Mario Lobo http://www.mallavoodoo.com.br FreeBSD since 2.2.8 [not Pro-Audio YET!!] (99% winblows FREE) ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: CPU heating!
On Feb 17, 2011, at 3:06 PM, Mario Lobo wrote: >> Most computer cases are designed with front-to-back airflow (ie, intake fans >> in the front, exhaust fans and the PSU in the back) and cool more >> effectively with the case on > > Well, in my case, with the "BEFORE" situation, if I had the side case cover > on, the temps would be even higher ! Are they? Well, that suggests something could be wrong with your case ventilation-- perhaps a stuck (or even reversed) fan. I know, it's not as interesting as the possibility that different versions of FreeBSD present different CPU load, but if you aren't controlling for major factors like the case being opened or closed, or using different coolers, then there's little point in worrying about whether your load-testing of the software is accurate. Regards -- -Chuck ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: CPU heating!
At 7:53 PM -0300 2/17/11, Mario Lobo wrote: >I replaced the thermal grease (as advised here) with a new one but that didn't >change those figures. I've not attempted to keep up with changes in thermal conductivity of heat sink compounds for something like 40 years. About that time, National Semiconductor published a paper about the effectiveness of various means of mounting power semiconductors to heat sinks. As I recall, the only method of obtaining truly efficient heat transfer was soldering the case to the heat sink - clearly not all that practical for many purposes. All of the thermal compounds tested did comparatively poorly, especially when applied too thickly. They worked best when applied just heavily enough to fill voids in the two surfaces being mated. Perhaps things are different today but I have my doubts. If they were, we'd make heat sinks out of thin walled finned copper cans containing the thermal compound. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: CPU heating!
On Feb 17, 2011, at 2:53 PM, Mario Lobo wrote: > Phenom II 955 w/ stock cooler > With the side of the computer case off. [ ...vs... ] > Phenom II 955 w/ a ZALMAN CNPS 10x PERFORMA cooler > With the side of the computer case ON. Um, so you obviously aren't comparing similar circumstances. Most computer cases are designed with front-to-back airflow (ie, intake fans in the front, exhaust fans and the PSU in the back) and cool more effectively with the case on Regards, -- -Chuck ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: CPU heating!
On Thursday 17 February 2011 19:59:18 Chuck Swiger wrote: > Um, so you obviously aren't comparing similar circumstances. No! Not at all. > Most computer cases are designed with front-to-back airflow > (ie, intake fans in the front, exhaust fans and the PSU in the back) and > cool more effectively with the case on Well, in my case, with the "BEFORE" situation, if I had the side case cover on, the temps would be even higher ! -- Mario Lobo http://www.mallavoodoo.com.br FreeBSD since 2.2.8 [not Pro-Audio YET!!] (99% winblows FREE) ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: CPU heating!
On Sunday 13 February 2011 18:52:16 Mario Lobo wrote: > Hi; > > I am following 8-CURRENT AMD64. I have a Phenom II 955. Up to the 3rd week > of January, I had 8-STABLE. Idle CPU temp was 42~44 C (which is already > not excellent, i know) and full load would never go above 60 C (compiling > VBox from KDE, for instance). > > After updating to 8.2-PRERELEASE, my temps now are: > idle:not less than 48 C > full load (same above conditions): it reached 65.5 C with peaks of 66 C!. > > > Was there any big change between these versions that could be causing this? Just an update to this topic: BEFORE: FBSD 8.2-RELEASE Phenom II 955 w/ stock cooler Idle temp at turn-on: 42~44 C Idle temp after 3 hrs: 48~49.5 C Load (95~100%)temp: 64~66.5 C (w/ peaks of 67.5) With the side of the computer case off. I replaced the thermal grease (as advised here) with a new one but that didn't change those figures. AFTER: FBSD 8.1-STABLE Phenom II 955 w/ a ZALMAN CNPS 10x PERFORMA cooler Idle temp at turn-on: 35~37 C Idle temp after the compilation: 43~44 C Load (95~100%)temp: 54~56.5 C (w/ peaks of 57 tops) With the side of the computer case ON. On both cases, the load was provided by compiling Vbox (4.0.2) under KDE and room temp was around 30 C. Powerd on for both. I noticed one thing. With 8.2-RELEASE, the compilation process stays at 100% load a lot longer than with 8.1-STABLE. During the compile with 8.2, there was a time I counted about 9 seconds at 100% load, plus about 3 or 4 extra 100% load of around 5 secs each. With 8.1, I only saw 4 half second ( well, it seemed like a half to me) 100% load peaks. And that was it. Beleive me, I counted them. Thanks to all that tried to help! -- Mario Lobo http://www.mallavoodoo.com.br FreeBSD since 2.2.8 [not Pro-Audio YET!!] (99% winblows FREE) ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: CPU heating!
> > Sorry to jump in, yes I would agree about Artic Silver 5, while researching > the topic of thermal compounds I discovered that it takes approx 200 hours > of being used before AS5 will start to operate at its peak. > That's only a little over 8 days... ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
RE: CPU heating!
-Original Message- From: Chris Rees [mailto:utis...@gmail.com] Sent: 14 February 2011 10:11 To: Mario Lobo Cc: FreeBSD Subject: Re: CPU heating! On 13 Feb 2011 23:06, "Mario Lobo" wrote: > > Hi; > > I am following 8-CURRENT AMD64. I have a Phenom II 955. Up to the 3rd week of > January, I had 8-STABLE. Idle CPU temp was 42~44 C (which is already not > excellent, i know) and full load would never go above 60 C (compiling VBox > from KDE, for instance). > > After updating to 8.2-PRERELEASE, my temps now are: > idle:not less than 48 C > full load (same above conditions): it reached 65.5 C with peaks of 66 C!. > > > Was there any big change between these versions that could be causing this? > > -- > You need to replace the thermal grease on your processor? It goes hard and loses effectiveness. I recommend Arctic Silver 5. Chris ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org" Sorry to jump in, yes I would agree about Artic Silver 5, while researching the topic of thermal compounds I discovered that it takes approx 200 hours of being used before AS5 will start to operate at its peak. Regards Graeme ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: CPU heating!
On 14 Feb 2011 15:51, "Mario Lobo" wrote: > > On Monday 14 February 2011 11:32:18 Chris Brennan wrote: > > > You need to replace the thermal grease on your processor? It goes hard > > > and loses effectiveness. I recommend Arctic Silver 5. > > > > It even comes in this little push-tube applicator with a plunger ... but it > > works great! Arctic Silver is probably the best their is, highly > > recommended. > > ___ > > freebsd-questions@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > To unsubscribe, send any mail to > > "freebsd-questions-unsubscr...@freebsd.org" > > Thanks to all. I'll give it a shot. > -- > Mario Lobo > Hahaha, shot! Nice. Chris ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: CPU heating!
On Monday 14 February 2011 11:32:18 Chris Brennan wrote: > > You need to replace the thermal grease on your processor? It goes hard > > and loses effectiveness. I recommend Arctic Silver 5. > > It even comes in this little push-tube applicator with a plunger ... but it > works great! Arctic Silver is probably the best their is, highly > recommended. > ___ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to > "freebsd-questions-unsubscr...@freebsd.org" Thanks to all. I'll give it a shot. -- Mario Lobo http://www.mallavoodoo.com.br FreeBSD since 2.2.8 [not Pro-Audio YET!!] (99% winblows FREE) ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: CPU heating!
> > You need to replace the thermal grease on your processor? It goes hard and > loses effectiveness. I recommend Arctic Silver 5. It even comes in this little push-tube applicator with a plunger ... but it works great! Arctic Silver is probably the best their is, highly recommended. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: CPU heating!
On 13 Feb 2011 23:06, "Mario Lobo" wrote: > > Hi; > > I am following 8-CURRENT AMD64. I have a Phenom II 955. Up to the 3rd week of > January, I had 8-STABLE. Idle CPU temp was 42~44 C (which is already not > excellent, i know) and full load would never go above 60 C (compiling VBox > from KDE, for instance). > > After updating to 8.2-PRERELEASE, my temps now are: > idle:not less than 48 C > full load (same above conditions): it reached 65.5 C with peaks of 66 C!. > > > Was there any big change between these versions that could be causing this? > > -- > You need to replace the thermal grease on your processor? It goes hard and loses effectiveness. I recommend Arctic Silver 5. Chris ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
