Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote: > On Sat, 11 Oct 2008, Elias Oltmanns wrote: >> > Compile the acpi_processor module in to the kernel > >> > (CONFIG_ACPI_PROCESSOR=y) and add processor.max_cstate=1 to the kernel >> > command line. If I analysed the problem correctly this will make the >> > jiffies problem go away. I'm working on a fix. >> >> Spot on, it does go away regardless whether NO_HZ or HIGH_RES are >> enabled or disabled. Looking forward to testing your fix ;-). > > Here you go. Bad luck, I'm afraid. Your patch seems to fix the issue for NO_HZ=n + HIGH_RES=y. As soon as NO_HZ=y, however, the problem reappears. See the output below. (Still testing on 2.6.27, mind. Should I test something more up-to-date?) Regards, Elias --8<---------------dmesg---------------start------------->8--- Oct 14 22:44:25 denkblock kernel: [ 150.063028] b: 150.062655731 n: 150.063022258 e: 4294952302 j: 4294952302 Oct 14 22:44:25 denkblock kernel: [ 150.063035] Timer List Version: v0.3 Oct 14 22:44:25 denkblock kernel: [ 150.063038] HRTIMER_MAX_CLOCK_BASES: 2 Oct 14 22:44:25 denkblock kernel: [ 150.063041] now at 150063035109 nsecs Oct 14 22:44:25 denkblock kernel: [ 150.063043] Oct 14 22:44:25 denkblock kernel: [ 150.063045] cpu: 0 Oct 14 22:44:25 denkblock kernel: [ 150.063047] clock 0: Oct 14 22:44:25 denkblock kernel: [ 150.063048] .index: 0 Oct 14 22:44:25 denkblock kernel: [ 150.063051] .resolution: 10000000 nsecs Oct 14 22:44:25 denkblock kernel: [ 150.063053] .get_time: ktime_get_real Oct 14 22:44:25 denkblock kernel: [ 150.063062] active timers: Oct 14 22:44:25 denkblock kernel: [ 150.063064] clock 1: Oct 14 22:44:25 denkblock kernel: [ 150.063066] .index: 1 Oct 14 22:44:25 denkblock kernel: [ 150.063068] .resolution: 10000000 nsecs Oct 14 22:44:25 denkblock kernel: [ 150.063070] .get_time: ktime_get Oct 14 22:44:25 denkblock kernel: [ 150.063074] active timers: Oct 14 22:44:25 denkblock kernel: [ 150.063076] #0: <c02e2f14>, hrtimer_wakeup, S:01, do_nanosleep, tail/2440 Oct 14 22:44:25 denkblock kernel: [ 150.063098] # expires at 150440037040 nsecs [in 377001931 nsecs] Oct 14 22:44:25 denkblock kernel: [ 150.063102] #1: <c02e2f14>, it_real_fn, S:01, do_setitimer, syslogd/2343 Oct 14 22:44:25 denkblock kernel: [ 150.063115] # expires at 173530381509 nsecs [in 23467346400 nsecs] Oct 14 22:44:25 denkblock kernel: [ 150.063119] .nohz_mode : 1 Oct 14 22:44:25 denkblock kernel: [ 150.063121] .idle_tick : 150030000000 nsecs Oct 14 22:44:25 denkblock kernel: [ 150.063124] .tick_stopped : 0 Oct 14 22:44:25 denkblock kernel: [ 150.063126] .idle_jiffies : 4294952299 Oct 14 22:44:25 denkblock kernel: [ 150.063129] .idle_calls : 21431 Oct 14 22:44:25 denkblock kernel: [ 150.063132] .idle_sleeps : 16504 Oct 14 22:44:25 denkblock kernel: [ 150.063134] .idle_entrytime : 150063016112 nsecs Oct 14 22:44:25 denkblock kernel: [ 150.063137] .idle_waketime : 150040009551 nsecs Oct 14 22:44:25 denkblock kernel: [ 150.063140] .idle_exittime : 150062664671 nsecs Oct 14 22:44:25 denkblock kernel: [ 150.063143] .idle_sleeptime : 138813566362 nsecs Oct 14 22:44:25 denkblock kernel: [ 150.063146] .last_jiffies : 4294952302 Oct 14 22:44:25 denkblock kernel: [ 150.063148] .next_jiffies : 4294952302 Oct 14 22:44:25 denkblock kernel: [ 150.063151] .idle_expires : 150040000000 nsecs Oct 14 22:44:25 denkblock kernel: [ 150.063154] .last_events0 : 150010011037 nsecs Oct 14 22:44:25 denkblock kernel: [ 150.063157] .last_events1 : 150020010914 nsecs Oct 14 22:44:25 denkblock kernel: [ 150.063159] .last_events2 : 150040012344 nsecs Oct 14 22:44:25 denkblock kernel: [ 150.063162] jiffies: 4294952302 Oct 14 22:44:25 denkblock kernel: [ 150.063164] Oct 14 22:44:25 denkblock kernel: [ 150.063165] Oct 14 22:44:25 denkblock kernel: [ 150.063167] Tick Device: mode: 1 Oct 14 22:44:25 denkblock kernel: [ 150.063169] Clock Event Device: pit Oct 14 22:44:26 denkblock kernel: [ 150.063172] max_delta_ns: 27461866 Oct 14 22:44:26 denkblock kernel: [ 150.063175] min_delta_ns: 12571 Oct 14 22:44:26 denkblock kernel: [ 150.063177] mult: 5124677 Oct 14 22:44:26 denkblock kernel: [ 150.063179] shift: 32 Oct 14 22:44:26 denkblock kernel: [ 150.063181] mode: 3 Oct 14 22:44:26 denkblock kernel: [ 150.063184] next_event: 9223372036854775807 nsecs Oct 14 22:44:26 denkblock kernel: [ 150.063187] set_next_event: pit_next_event Oct 14 22:44:26 denkblock kernel: [ 150.063193] set_mode: init_pit_timer Oct 14 22:44:26 denkblock kernel: [ 150.063197] event_handler: tick_handle_oneshot_broadcast Oct 14 22:44:26 denkblock kernel: [ 150.063203] tick_broadcast_mask: 00000001 Oct 14 22:44:26 denkblock kernel: [ 150.063205] tick_broadcast_oneshot_mask: 00000000 Oct 14 22:44:26 denkblock kernel: [ 150.063208] Oct 14 22:44:26 denkblock kernel: [ 150.063209] Oct 14 22:44:26 denkblock kernel: [ 150.063211] Tick Device: mode: 1 Oct 14 22:44:26 denkblock kernel: [ 150.063213] Clock Event Device: lapic Oct 14 22:44:26 denkblock kernel: [ 150.063216] max_delta_ns: 1346509690 Oct 14 22:44:26 denkblock kernel: [ 150.063218] min_delta_ns: 2407 Oct 14 22:44:26 denkblock kernel: [ 150.063221] mult: 26757173 Oct 14 22:44:26 denkblock kernel: [ 150.063223] shift: 32 Oct 14 22:44:26 denkblock kernel: [ 150.063225] mode: 3 Oct 14 22:44:26 denkblock kernel: [ 150.063227] next_event: 150070000000 nsecs Oct 14 22:44:26 denkblock kernel: [ 150.063230] set_next_event: lapic_next_event Oct 14 22:44:26 denkblock kernel: [ 150.063234] set_mode: lapic_timer_setup Oct 14 22:44:26 denkblock kernel: [ 150.063237] event_handler: tick_nohz_handler Oct 14 22:44:26 denkblock kernel: [ 150.063241] --8<---------------dmesg---------------end--------------->8--- -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
