guy2545 Posted December 1, 2019 Share Posted December 1, 2019 Running my monthly parity check on my system and the system became unresponsive numerous times throughout the check. The GUI and console would stop responding for ~30-60 seconds. I've attached a snip of the call trace below as well as the diagnostics, but it seems whatever core of my FX-8370 was pegged to 100% was the core that showed up in the log as "NMI backtrace for cpu X". Nov 30 04:23:03 Tower kernel: NMI backtrace for cpu 1 Nov 30 04:23:03 Tower kernel: CPU: 1 PID: 7410 Comm: unraidd Tainted: P W O 4.19.56-Unraid #1 Nov 30 04:23:03 Tower kernel: Hardware name: To be filled by O.E.M. To be filled by O.E.M./970 PRO GAMING/AURA, BIOS 0901 11/07/2016 Nov 30 04:23:03 Tower kernel: Call Trace: Nov 30 04:23:03 Tower kernel: <IRQ> Nov 30 04:23:03 Tower kernel: dump_stack+0x5d/0x79 Nov 30 04:23:03 Tower kernel: nmi_cpu_backtrace+0x71/0x83 Nov 30 04:23:03 Tower kernel: ? lapic_can_unplug_cpu+0x8e/0x8e Nov 30 04:23:03 Tower kernel: nmi_trigger_cpumask_backtrace+0x57/0xd7 Nov 30 04:23:03 Tower kernel: rcu_dump_cpu_stacks+0x91/0xbb Nov 30 04:23:03 Tower kernel: rcu_check_callbacks+0x28f/0x58e Nov 30 04:23:03 Tower kernel: ? tick_sched_handle.isra.5+0x2f/0x2f Nov 30 04:23:03 Tower kernel: update_process_times+0x23/0x45 Nov 30 04:23:03 Tower kernel: tick_sched_timer+0x36/0x64 Nov 30 04:23:03 Tower kernel: __hrtimer_run_queues+0xb1/0x105 Nov 30 04:23:03 Tower kernel: hrtimer_interrupt+0xf4/0x20d Nov 30 04:23:03 Tower kernel: smp_apic_timer_interrupt+0x79/0x91 Nov 30 04:23:03 Tower kernel: apic_timer_interrupt+0xf/0x20 Nov 30 04:23:03 Tower kernel: </IRQ> The parity check is still jugging along at ~70%. Any thoughts? tower-diagnostics-20191130-2039.zip Quote Link to comment
JorgeB Posted December 1, 2019 Share Posted December 1, 2019 This can usually be fixed by lowering the md_sync_thresh variable little by little until the NMIs stop, alternatively upgrade to v6.8 which uses a different resync process and has so far been immune to this issue. Quote Link to comment
guy2545 Posted December 1, 2019 Author Share Posted December 1, 2019 Thank you! Will give that a go. Quote Link to comment
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