Messages in this thread | | | Subject | Re: Bug Report High CPU Usage events_power_efficient | From | Martin Zaharinov <> | Date | Wed, 8 Jul 2020 09:50:49 +0300 |
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Add Greg , Florian, Eric to this bug
> On 7 Jul 2020, at 22:54, Martin Zaharinov <micron10@gmail.com> wrote: > > And this is log from /sys/kernel/debug/tracing/trace > > > # entries-in-buffer/entries-written: 32410/32410 #P:64 > # > # _-----=> irqs-off > # / _----=> need-resched > # | / _---=> hardirq/softirq > # || / _--=> preempt-depth > # ||| / delay > # TASK-PID CPU# |||| TIMESTAMP FUNCTION > # | | | |||| | | > <...>-57259 [005] .... 29619.680698: workqueue_execute_start: work struct 00000000ef22e4b8: function gc_worker [nf_conntrack] > <...>-57259 [005] .... 29623.811407: workqueue_execute_end: work struct 00000000ef22e4b8: function gc_worker [nf_conntrack] > <...>-57259 [005] .... 29623.811410: workqueue_execute_start: work struct 0000000000aeec55: function fb_flashcursor > <...>-57259 [005] .... 29623.811421: workqueue_execute_end: work struct 0000000000aeec55: function fb_flashcursor > <...>-57259 [005] .... 29623.811422: workqueue_execute_start: work struct 00000000a6d382bb: function vmstat_update > <...>-57259 [005] .... 29623.811435: workqueue_execute_end: work struct 00000000a6d382bb: function vmstat_update > >> On 7 Jul 2020, at 22:44, Martin Zaharinov <micron10@gmail.com> wrote: >> >> the problem is hear with kernel 5.7.7 >> >> last work kernel without this problem is 5.6.7 >> >> hear is more info: >> >> cat /proc/57259/stack >> root@megacableamarilis:~# cat /proc/57259/stack >> [<0>] gc_worker+0x1be/0x380 [nf_conntrack] >> [<0>] process_one_work+0x1bc/0x3b0 >> [<0>] worker_thread+0x4d/0x460 >> [<0>] kthread+0x10d/0x130 >> [<0>] ret_from_fork+0x1f/0x30 >> >> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 57259 root 28 0 0 0 0 R 69.8 0.0 82:42.14 kworker/5:2+events_power_efficient >> 32 root 21 0 0 0 0 R 31.0 0.0 87:06.33 ksoftirqd/4 >> >> >> Please help to fix this problem >> >>> On 22 Apr 2020, at 15:55, Martin Zaharinov <micron10@gmail.com> wrote: >>> >>> Hello Qian and Greg >>> With latest 5.6.x kernel have problem with events_power_efficient 28488 root 28 0 0 0 0 R 95.5 0.0 101:38.19 kworker/2:1+events_power_efficient Process start to load machine after 3-4 hour and load not stop only reboot machine remove process . Server runing on AMD EPIC CPU 2x 7301 32Gb Ram Have 2 x 10G card Intel when machine load over 1G traffic machine locked and only restart fix problem to next load . After move traffic and server stop load process still hear and load server ? >>> And after reboot process move to other core . >>> >>> Best Regards, >>> Martin >> >
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