Date: Sat, 30 Jul 2011 11:07:01 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: Rick Macklem <rmacklem@uoguelph.ca> Cc: FreeBSD-Current <freebsd-current@FreeBSD.org> Subject: Re: Heavy I/O blocks FreeBSD box for several seconds Message-ID: <4E33BBA5.4030805@FreeBSD.org> In-Reply-To: <254152988.989678.1311630244759.JavaMail.root@erie.cs.uoguelph.ca> References: <254152988.989678.1311630244759.JavaMail.root@erie.cs.uoguelph.ca>
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on 26/07/2011 00:44 Rick Macklem said the following: > hrs sent me this panic. I'm wondering if it might be relevant to this? To 'this' what? A panic is a panic. > spin lock 0xffffffff80cb52c0 (sched lock 1) held by 0xffffff0012c7f8c0 (tid 100317) too long > panic: spin lock held too long I guess it's more related to the thread on stable@ which has the panic message as its subject. > cpuid = 0 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2a > kdb_backtrace() at kdb_backtrace+0x37 > panic() at panic+0x187 > _mtx_lock_spin_failed() at _mtx_lock_spin_failed+0x39 > _mtx_lock_spin() at _mtx_lock_spin+0x9e > sched_add() at sched_add+0x117 > setrunnable() at setrunnable+0x78 > sleepq_signal() at sleepq_signal+0x7a > cv_signal() at cv_signal+0x3b > xprt_active() at xprt_active+0xe3 > svc_vc_soupcall() at svc_vc_soupcall+0xc > sowakeup() at sowakeup+0x69 > tcp_do_segment() at tcp_do_segment+0x2cbd > tcp_input() at tcp_input+0xcdd > ip_input() at ip_input+0xac > netisr_dispatch_src() at netisr_dispatch_src+0x7e > ether_demux() at ether_demux+0x14d > ether_input() at ether_input+0x17d > em_rxeof() at em_rxeof+0x1ca > em_handle_que() at em_handle_que+0x5b > taskqueue_run_locked() at taskqueue_run_locked+0x85 > taskqueue_thread_loop() at taskqueue_thread_loop+0x4e > fork_exit() at fork_exit+0x11f > fork_trampoline() at fork_trampoline+0xe > --- trap 0, rip = 0, rsp = 0xffffff8000160d00, rbp = 0 --- > KDB: enter: panic > [thread pid 0 tid 100033 ] > Stopped at kdb_enter+0x3b: movq $0,0x6b4e62(%rip) > db> ps > -- Andriy Gapon
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