On 08/11/2016 09:30, Noam Camus wrote: >> From: Daniel Lezcano [mailto:[email protected]] >> Sent: Tuesday, November 1, 2016 10:02 PM > ... >> Assuming cpu0 and cpu1 are sibling, does > >> taskset 0x1 time sleep 2 & taskset 0x2 time sleep 3 > > I will use 16,17 instead of 0,1 >> give a correct result without a dmesg log ? > [[email protected] /]$ [[email protected] /]$ taskset 65536 time sleep 2 & > taskset 131072 time sleep 3
Thanks for providing the numbers. So there is no weird messages in dmesg ? > real 0m 2.54s > user 0m 0.04s > sys 0m 0.14s > real 0m 3.47s > user 0m 0.00s > sys 0m 0.15s > [1]+ Done taskset 65536 time sleep 2 > > Seem OK to me. I'm not sure of that. 2.54 instead of 2 3.47 instead of 3 0.02 time drift could be acceptable but 0.54 or 0.47 is too much. And 0.15 in sys also a big number AFAICT. Is the system in NO_HZ ? -- <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook | <http://twitter.com/#!/linaroorg> Twitter | <http://www.linaro.org/linaro-blog/> Blog
