Displaying 2 results from an estimated 2 matches for "rcu_bh".
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2012 Oct 17
28
Xen PVM: Strange lockups when running PostgreSQL load
...s free in the dump. And again at
least one did not seem to be doing anything spinlock related
(anymore?).
One other detail (but that could be just incidence as well) was
that in unmodified kernel I usually would end up with soft
lockup messages, with the patched kernel, that was a stall
detected by rcu_bh (0 and 1 stalled, detected by 3).
Now I am a bit confused and wonder about some basic things:
1. When a cpu goes into the slow lock path and into the poll_irq,
shouldn''t I expect this one to be in hypercall_page in the
dump?
2. When does the whole handling for interrupted spinlock w...
2012 Sep 09
2
Stall on CPU
...p 8 11:39:48 davical kernel: [124721.760199] INFO: rcu_sched detected
stalls on CPUs/tasks: { 1} (detected by 0, t=15751455 jiffies)
Sep 8 11:39:52 davical kernel: [124725.855952] ipv6_create_tempaddr():
retry temporary address regeneration.
Sep 8 11:40:08 davical kernel: [124721.760226] INFO: rcu_bh detected
stall on CPU 1 (t=15395723 jiffies)
Sep 8 11:40:08 davical kernel: [124721.760226] sending NMI to all CPUs:
Sep 8 11:40:08 davical kernel: [124742.485888] sched: RT throttling
activated
I have tried it on two Xen Dom0 installations, one of 4.1.2 and the
other on 4.1.3.
The 4.1.2 D...