On Sun, Oct 24, 2010 at 09:40:38PM -0400, Arun Raghavan wrote: > Thanks again for the prompt response. One more question regarding > coretemp: any idea how I can probe the sensor in my own source code? > I'm hoping to be able to probe a few times a second, while the > lm-sensors usage guide says max. probing frequency should be at most > 0.3-0.5 Hz. I'm trying to measure thermal response and hence > transients. Temperature rises rather too rapidly for this once every > 2-3 seconds restriction; there's no intermediate reading between idle > temperature (~28C) and loaded (~55C). Even when I overclock to > deliberately induce more dissipation, I don't get an intermediate > reading between the same base temperature and 70C! > Please let me know if the 2-3s resolution is a limitation of the > sensors API or the kernel module itself. Any tips on how I might be > able to measure with greater frequency (apart from hooking up an > external probe and thermometer)? > Please don't top-post. Technically, you can keep reading the sysfs attribute file in a continuous loop without delay. However, the coretemp driver updates its readings only once per second. You can poll faster, of course, but it won't help much. Just wondering - did you _try_ probing it faster than the guide says ? If no, why not ? After all, it is a usage guide, not a law. Thanks, Guenter _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
