Hallo.
Ich habe eine VM, in der Nextcloud auf einem Ubuntu 16.04 LTS läuft. Leider erhalte ich dort regelmäßig Meldungen dieser Art:
(dmesg)
Die VM läuft danach aber normal (?) weiter. Ist das ein bekanntes Problem?
Danke.
Ich habe eine VM, in der Nextcloud auf einem Ubuntu 16.04 LTS läuft. Leider erhalte ich dort regelmäßig Meldungen dieser Art:
(dmesg)
Code:
[28669.202893] INFO: rcu_sched detected stalls on CPUs/tasks:
[28669.204540] 0-...: (0 ticks this GP) idle=0cc/0/0 softirq=612792/612792 fqs=0
[28669.205379] 1-...: (1 GPs behind) idle=bdc/0/0 softirq=556141/556142 fqs=0
[28669.206208] 2-...: (1 GPs behind) idle=172/0/0 softirq=582649/582650 fqs=0
[28669.207023] 3-...: (1 GPs behind) idle=bef/140000000000001/0 softirq=555745/555746 fqs=0
[28669.207879] (detected by 3, t=1 jiffies, g=801471, c=801470, q=1915)
[28669.208740] Task dump for CPU 3:
[28669.208742] mysqld R running task 0 2708 1 0x00000000
[28669.208745] ffff88042a6f6200 e881a2c4b7e46a9d ffff88043fd83da0 ffffffff810b5c69
[28669.208747] 0000000000000003 ffffffff81e577c0 ffff88043fd83db8 ffffffff810b8497
[28669.208749] 0000000000000004 ffff88043fd83de8 ffffffff810ed34e ffff88043fd97040
[28669.208756] Call Trace:
[28669.208758] <IRQ> [<ffffffff810b5c69>] sched_show_task+0xa9/0x110
[28669.208780] [<ffffffff810b8497>] dump_cpu_task+0x37/0x40
[28669.208797] [<ffffffff810ed34e>] rcu_dump_cpu_stacks+0x8e/0xe0
[28669.208799] [<ffffffff810f15e4>] rcu_check_callbacks+0x7a4/0x7f0
[28669.208803] [<ffffffff81107d10>] ? tick_sched_handle.isra.14+0x60/0x60
[28669.208805] [<ffffffff810f79d9>] update_process_times+0x39/0x60
[28669.208807] [<ffffffff81107cd5>] tick_sched_handle.isra.14+0x25/0x60
[28669.208809] [<ffffffff81107d4d>] tick_sched_timer+0x3d/0x70
[28669.208811] [<ffffffff810f8322>] __hrtimer_run_queues+0x102/0x290
[28669.208813] [<ffffffff810f8b18>] hrtimer_interrupt+0xa8/0x1a0
[28669.208817] [<ffffffff810558fe>] local_apic_timer_interrupt+0x3e/0x60
[28669.208820] [<ffffffff8186ac0b>] smp_apic_timer_interrupt+0x4b/0x70
[28669.208823] [<ffffffff81868354>] apic_timer_interrupt+0xd4/0xe0
[28669.208823] <EOI>
[28850.542758] INFO: rcu_sched self-detected stall on CPU
[28850.542805] 1-...: (17 GPs behind) idle=01d/2/0 softirq=560015/560015 fqs=1
[28850.542925] INFO: rcu_sched detected stalls on CPUs/tasks:
[28850.542928] 0-...: (1 ticks this GP) idle=469/140000000000001/0 softirq=613944/613944 fqs=1
[28850.542929] 1-...: (17 GPs behind) idle=01d/2/0 softirq=560015/560015 fqs=1
[28850.542931] (detected by 2, t=18685 jiffies, g=803331, c=803330, q=1648)
[28850.542931] Task dump for CPU 0:
[28850.542933] apache2 R running task 0 21408 1651 0x00000000
[28850.542936] 00007f26a08159f0 0000000000000000 0000000000008069 000000000000006a
[28850.542937] 00007f269e030410 0000000000000000 0000000000000080 0000000000000000
[28850.542939] 0000000000010000 0000000000002ee1 a78888e5577394dd 0000000000000000
[28850.542939] Call Trace:
[28850.542949] Task dump for CPU 1:
[28850.542951] swapper/1 R running task 0 0 1 0x00000008
[28850.542952] ffffffffffffff50 ffffffff81067ae2 0000000000000010 0000000000000246
[28850.542953] ffff88042d78fe90 0000000000000018 ffff88042d78feb0 ffffffff8103914e
[28850.542955] ffffffff81f43880 ffff88042d790000 ffff88042d78fec0 ffffffff81039ff5
[28850.542955] Call Trace:
[28850.542961] [<ffffffff81067ae2>] ? native_safe_halt+0x12/0x20
[28850.542964] [<ffffffff8103914e>] ? default_idle+0x1e/0xe0
[28850.542966] [<ffffffff81039ff5>] ? arch_cpu_idle+0x15/0x20
[28850.542968] [<ffffffff810cbeba>] ? default_idle_call+0x2a/0x40
[28850.542970] [<ffffffff810cc233>] ? cpu_startup_entry+0x303/0x360
[28850.542973] [<ffffffff81053cf7>] ? start_secondary+0x177/0x1b0
[28850.542974] rcu_sched kthread starved for 18683 jiffies! g803331 c803330 f0x0 s3 ->state=0x0
[28850.549257] (t=18686 jiffies g=803331 c=803330 q=1673)
[28850.550083] Task dump for CPU 1:
[28850.550084] swapper/1 R running task 0 0 1 0x00000008
[28850.550087] ffff88042d780e00 668c2dfcece8ee82 ffff88043fc83c38 ffffffff810b5c69
[28850.550089] 0000000000000001 ffffffff81e577c0 ffff88043fc83c50 ffffffff810b8497
[28850.550091] 0000000000000002 ffff88043fc83c80 ffffffff810ed34e ffff88043fc97040
[28850.550093] Call Trace:
[28850.550095] <IRQ> [<ffffffff810b5c69>] sched_show_task+0xa9/0x110
[28850.550102] [<ffffffff810b8497>] dump_cpu_task+0x37/0x40
[28850.550105] [<ffffffff810ed34e>] rcu_dump_cpu_stacks+0x8e/0xe0
[28850.550108] [<ffffffff810f1340>] rcu_check_callbacks+0x500/0x7f0
[28850.550111] [<ffffffff8114b41c>] ? acct_account_cputime+0x1c/0x20
[28850.550113] [<ffffffff810b8f39>] ? account_system_time+0x79/0x120
[28850.550117] [<ffffffff81107d10>] ? tick_sched_handle.isra.14+0x60/0x60
[28850.550119] [<ffffffff810f79d9>] update_process_times+0x39/0x60
[28850.550121] [<ffffffff81107cd5>] tick_sched_handle.isra.14+0x25/0x60
[28850.550123] [<ffffffff81107d4d>] tick_sched_timer+0x3d/0x70
[28850.550125] [<ffffffff810f8322>] __hrtimer_run_queues+0x102/0x290
[28850.550127] [<ffffffff810f8b18>] hrtimer_interrupt+0xa8/0x1a0
[28850.550137] [<ffffffff810558fe>] local_apic_timer_interrupt+0x3e/0x60
[28850.550140] [<ffffffff8186ac0b>] smp_apic_timer_interrupt+0x4b/0x70
[28850.550143] [<ffffffff81868354>] apic_timer_interrupt+0xd4/0xe0
[28850.550146] [<ffffffff8108b464>] ? __do_softirq+0x84/0x2b0
[28850.550148] [<ffffffff8108b805>] irq_exit+0xa5/0xb0
[28850.550150] [<ffffffff8186ab2c>] do_IRQ+0x5c/0xf0
[28850.550152] [<ffffffff81867f54>] common_interrupt+0xd4/0xd4
[28850.550153] <EOI> [<ffffffff81039130>] ? speculation_ctrl_update_tif+0x80/0x80
[28850.550158] [<ffffffff81067ae2>] ? native_safe_halt+0x12/0x20
[28850.550160] [<ffffffff8103914e>] default_idle+0x1e/0xe0
[28850.550162] [<ffffffff81039ff5>] arch_cpu_idle+0x15/0x20
[28850.550164] [<ffffffff810cbeba>] default_idle_call+0x2a/0x40
[28850.550165] [<ffffffff810cc233>] cpu_startup_entry+0x303/0x360
[28850.550168] [<ffffffff81053cf7>] start_secondary+0x177/0x1b0Die VM läuft danach aber normal (?) weiter. Ist das ein bekanntes Problem?
Danke.
