Thanks Lukas, i've made some search on kernel 3.2.x and i've found some
articles reporting inconsistent load average on tickless kernels
(CONFIG_NO_HZ=y).
It seems to be the case here.
Thks again.
Arnaud.
Le 16/05/2013 20:44, Lukas Tribus a écrit :
Hi Arnall,
looks like the load average calculation was wrong with the old kernel,
it did not account for the soft interupts (XX%si):
top - 19:13:09 up 6:15, 1 user, load average: 0.03, 0.03, 0.05
Cpu(s): 1.3%us, 2.1%sy, 0.0%ni, 79.7%id, 0.1%wa, 0.0%hi, 16.8%si,
The CPU is always about 80% idle with both the old and the new kernel,
and it also always spends about 16%si, and a few percents in the kernel
and userspace.
So it looks like you are not facing more real load, the two kernels
only have a different understanding of what load is.
Regards,
Lukas
