| 1 |
On 7/8/06, Etaoin Shrdlu <shrdlu@×××××××××××××.org> wrote: |
| 2 |
> The problem is that some very CPU-consuming apps, even if started with |
| 3 |
> the lowest priority (eg, nice -n 19), still eat up 100% CPU (with |
| 4 |
> subsequent overheating, fan start, throttling, etc.) if the system is |
| 5 |
> not busy and has nothing else to do. What I'd like to know is whether it |
| 6 |
> is possible to impose such a CPU percentage usage limit. |
| 7 |
|
| 8 |
Well, I would first upgrade my cooling fans so the processor couldn't |
| 9 |
overheat! :-) |
| 10 |
|
| 11 |
But you could also enable "CPU freqency scaling" in the kernel, with |
| 12 |
the ondemand governor, and use the various settings in |
| 13 |
/sys/devices/system/cpu/cpu0/cpufreq to control the clock speed and |
| 14 |
behavior of the system. You can use scaling_max_freq to specify the |
| 15 |
maximum frequency of the processor so that it will not overheat or |
| 16 |
throttle, no matter what the load is, and the |
| 17 |
ondemand/ignore_nice_load setting will tell the governor not to |
| 18 |
increase the clock speed for niced processes. |
| 19 |
|
| 20 |
-Richard |
| 21 |
-- |
| 22 |
gentoo-user@g.o mailing list |
Archives