On Tue, 2020-06-09 at 22:10 +1000, Stephen Morris wrote: > Hi, > I have the following messages in dmesg output, are they indicating > a cpu issue, or are they just indicating that because linux is running > in a vm under windows, and hence sharing the cpu cores with windows that > windows was using core 7 at the time the process checked? > > [16236.896502] rcu: INFO: rcu_sched detected stalls on CPUs/tasks: > [16236.896506] rcu: 7-...!: (0 ticks this GP) idle=d48/0/0x0 > softirq=207101/207101 fqs=0 > [16236.896508] (detected by 4, t=60008 jiffies, g=263697, q=1058) > [16236.896510] Sending NMI from CPU 4 to CPUs 7: > [16236.896563] NMI backtrace for cpu 7 skipped: idling at > native_safe_halt+0xe/0x10 > [16236.897522] rcu: rcu_sched kthread starved for 60008 jiffies! g263697 > f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=7 > [16236.897522] rcu: RCU grace-period kthread stack dump: > [16236.897524] rcu_sched I 0 11 2 0x80004000 > [16236.897526] Call Trace: > [16236.897532] __schedule+0x26f/0x760 > [16236.897535] schedule+0x4a/0xb0 > [16236.897536] schedule_timeout+0x7b/0x140 > [16236.897539] ? __next_timer_interrupt+0xd0/0xd0 > [16236.897541] rcu_gp_kthread+0x4db/0xa90 > [16236.897543] ? rcu_nocb_cb_kthread+0x210/0x210 > [16236.897545] kthread+0x115/0x140 > [16236.897547] ? __kthread_bind_mask+0x60/0x60 > [16236.897549] ret_from_fork+0x22/0x40 Surely a VM would see only virtual cores and not be aware of the host. However this is running on Windows, so who knows. You might want to mention which VM it is (VirtualBox, VMware, Microsoft's, ...) poc _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx
