> From: Daniel Lezcano [mailto:daniel.lezcano@xxxxxxxxxx] > 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 ? [root@192.168.8.2 /]$ [root@192.168.8.2 /]$ taskset 65536 time sleep 2 & taskset 131072 time sleep 3 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. > Can you give the content of the /proc/timer_list ? [root@192.168.8.2 /]$ cat /proc/timer_list Timer List Version: v0.8 HRTIMER_MAX_CLOCK_BASES: 4 now at 2421277626774 nsecs cpu: 0 clock 0: .base: 9fccb540 .index: 0 .resolution: 1 nsecs .get_time: ktime_get .offset: 0 nsecs active timers: #0: <9fccb69c>, tick_sched_timer, S:01 # expires at 2421140000000-2421140000000 nsecs [in -137626774 to -137626774 nsecs] clock 1: .base: 9fccb560 .index: 1 .resolution: 1 nsecs .get_time: ktime_get_real .offset: 0 nsecs active timers: clock 2: .base: 9fccb580 .index: 2 .resolution: 1 nsecs .get_time: ktime_get_boottime .offset: 0 nsecs active timers: clock 3: .base: 9fccb5a0 .index: 3 .resolution: 1 nsecs .get_time: ktime_get_clocktai .offset: 0 nsecs active timers: .expires_next : 2421140000000 nsecs .hres_active : 1 .nr_events : 615427 .nr_retries : 10052 .nr_hangs : 37 .max_hang_time : 682411010 .nohz_mode : 2 .last_tick : 0 nsecs .tick_stopped : 0 .idle_jiffies : 0 .idle_calls : 0 .idle_sleeps : 0 .idle_entrytime : 2421131605769 nsecs .idle_waketime : 0 nsecs .idle_exittime : 0 nsecs .idle_sleeptime : 1900903609165 nsecs .iowait_sleeptime: 0 nsecs .last_jiffies : 0 .next_timer : 0 .idle_expires : 0 nsecs jiffies: 212114 cpu: 16 clock 0: .base: 9fcd7540 .index: 0 .resolution: 1 nsecs .get_time: ktime_get .offset: 0 nsecs active timers: clock 1: .base: 9fcd7560 .index: 1 .resolution: 1 nsecs .get_time: ktime_get_real .offset: 0 nsecs active timers: clock 2: .base: 9fcd7580 .index: 2 .resolution: 1 nsecs .get_time: ktime_get_boottime .offset: 0 nsecs active timers: clock 3: .base: 9fcd75a0 .index: 3 .resolution: 1 nsecs .get_time: ktime_get_clocktai .offset: 0 nsecs active timers: .expires_next : 9223372036854775807 nsecs .hres_active : 1 .nr_events : 18 .nr_retries : 1 .nr_hangs : 0 .max_hang_time : 0 .nohz_mode : 2 .last_tick : 2410120000000 nsecs .tick_stopped : 1 .idle_jiffies : 211017 .idle_calls : 27 .idle_sleeps : 27 .idle_entrytime : 2410189597725 nsecs .idle_waketime : 2410189342725 nsecs .idle_exittime : 2410110197721 nsecs .idle_sleeptime : 2408852044732 nsecs .iowait_sleeptime: 0 nsecs .last_jiffies : 211019 .next_timer : 9223372036854775807 .idle_expires : 9223372036854775807 nsecs jiffies: 212114 cpu: 17 clock 0: .base: 9fce3540 .index: 0 .resolution: 1 nsecs .get_time: ktime_get .offset: 0 nsecs active timers: clock 1: .base: 9fce3560 .index: 1 .resolution: 1 nsecs .get_time: ktime_get_real .offset: 0 nsecs active timers: clock 2: .base: 9fce3580 .index: 2 .resolution: 1 nsecs .get_time: ktime_get_boottime .offset: 0 nsecs active timers: clock 3: .base: 9fce35a0 .index: 3 .resolution: 1 nsecs .get_time: ktime_get_clocktai .offset: 0 nsecs active timers: .expires_next : 9223372036854775807 nsecs .hres_active : 1 .nr_events : 22 .nr_retries : 1 .nr_hangs : 0 .max_hang_time : 0 .nohz_mode : 2 .last_tick : 2412120000000 nsecs .tick_stopped : 1 .idle_jiffies : 211212 .idle_calls : 32 .idle_sleeps : 32 .idle_entrytime : 2412123353729 nsecs .idle_waketime : 2412123049733 nsecs .idle_exittime : 2412110161733 nsecs .idle_sleeptime : 2410832354720 nsecs .iowait_sleeptime: 0 nsecs .last_jiffies : 211213 .next_timer : 9223372036854775807 .idle_expires : 9223372036854775807 nsecs jiffies: 212114 Tick Device: mode: 1 Per CPU device: 0 Clock Event Device: ARC Timer0 max_delta_ns: 51539607733 min_delta_ns: 1000 mult: 178956970 shift: 31 mode: 3 next_event: 2421140000000 nsecs set_next_event: arc_clkevent_set_next_event periodic: arc_clkevent_set_periodic event_handler: hrtimer_interrupt retries: 0 Tick Device: mode: 1 Per CPU device: 16 Clock Event Device: ARC Timer0 max_delta_ns: 51539607733 min_delta_ns: 1000 mult: 178956970 shift: 31 mode: 3 next_event: 9223372036854775807 nsecs set_next_event: arc_clkevent_set_next_event periodic: arc_clkevent_set_periodic event_handler: hrtimer_interrupt retries: 2 Tick Device: mode: 1 Per CPU device: 17 Clock Event Device: ARC Timer0 max_delta_ns: 51539607733 min_delta_ns: 1000 mult: 178956970 shift: 31 mode: 3 next_event: 9223372036854775807 nsecs set_next_event: arc_clkevent_set_next_event periodic: arc_clkevent_set_periodic event_handler: hrtimer_interrupt retries: 2 -Noam -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
