On Wed, Sep 11, 2013 at 9:51 PM, hiren panchasara < hiren.panchasara_at_gmail.com> wrote: > I am seeing really weird system freeze for 2-3 seconds every minute or so. > > % uname -a > FreeBSD flymockour-l7.corp.yahoo.com 10.0-CURRENT FreeBSD 10.0-CURRENT #2 > r255423M: Mon Sep 9 12:29:22 PDT 2013 root_at_flymocko > ur-l7.corp.yahoo.com:/usr/obj/usr/home/hirenp/head/sys/GENERIC amd64 > > Simple comands like "man top" hangs and this is what I see in ctrl+T > % man top > load: 1.59 cmd: zcat 76574 [*kmem arena] 2.16r 0.00u 1.82s 16% 2000k > load: 1.70 cmd: zcat 76574 [*kmem arena] 7.19r 0.00u 1.82s 7% 2000k > load: 1.89 cmd: zcat 76574 [*kmem arena] 12.58r 0.00u 1.82s 3% 2000k > load: 1.90 cmd: zcat 76574 [*kmem arena] 14.58r 0.00u 1.82s 2% 2000k > > I see similar things while trying to "exit" a terminal window. > > I see following in pmcstat: > > PMC: [INSTR_RETIRED_ANY] Samples: 117647 (100.0%) , 6885 unresolved > > %SAMP CALLTREE > 75.9 fork_exit_at_kernel taskqueue_thread_loop taskqueue_run_locked > vmem_periodic(75.9%) > At any point in time whether system is misbehaving or not, I see this on top of the graph. Which seems wrong. Providing a few samples over the time: PMC: [INSTR_RETIRED_ANY] Samples: 97253 (100.0%) , 6080 unresolved %SAMP CALLTREE 78.1 fork_exit_at_kernel taskqueue_thread_loop taskqueue_run_locked vmem_periodic(78.1%) 1.0 bsearch_at_libc.so.7(1.0%) 0.7 0xe7b661_at_libnvidia-glcore.s clock_gettime_at_libc.so.7 0x128c6e 0x128a80(0.6%) 0.2 amd64_syscall_at_kernel sys_select kern_select 0.2 lapic_handle_timer_at_kernel timercb handleevents hardclock_cnt pmc_hook_handler_at_hwpmc.ko pmc_process_samples 0.0 amd64_syscall_at_kernel sys_poll 0.0 free_at_libc.so.7 0.0 0x212ff56_at_libxul.so 0x2130835 0x212f907 0x212f1e7 0x212d2fa 0x22b6777 0x22b6478 PMC: [INSTR_RETIRED_ANY] Samples: 35320 (100.0%) , 3663 unresolved %SAMP CALLTREE 32.4 fork_exit_at_kernel taskqueue_thread_loop taskqueue_run_locked vmem_periodic(32.4%) 1.6 free_at_libc.so.7 0x9ad75 0x9a597(1.4%) 1.3 intr_event_execute_handlers_at_kernel hdac_intr_handler hdaa_stream_intr chn_intr chn_intr_locked sndbuf_feed feed_mixer_feed z_resampler_feed z_feed_linear_S16LE(1.0%) 1.3 hdac_intr_handler_at_kernel hdaa_stream_intr chn_intr chn_intr_locked sndbuf_feed feed_mixer_feed z_resampler_feed z_feed_linear_S16LE(1.0%) 1.2 amd64_syscall_at_kernel sys___sysctl userland_sysctl sysctl_root cpufreq_curr_sysctl cf_set_method est_set DELAY(0.6%) get_tsc(0.5%) 1.1 bsearch_at_libc.so.7(1.1%) PMC: [INSTR_RETIRED_ANY] Samples: 118799 (100.0%) , 7859 unresolved %SAMP CALLTREE 70.5 fork_exit_at_kernel taskqueue_thread_loop taskqueue_run_locked vmem_periodic(70.5%) 1.1 bsearch_at_libc.so.7(1.1%) 0.2 lapic_handle_timer_at_kernel timercb handleevents hardclock_cnt pmc_hook_handler_at_hwpmc.ko pmc_process_samples 0.1 free_at_libc.so.7 0.1 0xe7b661_at_libnvidia-glcore.s clock_gettime_at_libc.so.7 0.1 amd64_syscall_at_kernel sys_select kern_select 0.1 __realloc_at_libc.so.7 0.1 amd64_syscall_at_kernel sys_poll cheers, Hiren > > I am not running anything funny and I do not see anything weird in "top" > too. > > Any help is appreciated. > > cheers, > Hiren >Received on Thu Sep 12 2013 - 02:59:19 UTC
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