Date: Tue, 27 Mar 2018 20:28:46 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-usb@FreeBSD.org Subject: [Bug 226968] IRQ storm on cpu0 timer when holding down key on USB keyboard Message-ID: <bug-226968-17-KaCU55HUmK@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-226968-17@https.bugs.freebsd.org/bugzilla/> References: <bug-226968-17@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D226968 --- Comment #6 from Johannes Lundberg <johalun0@gmail.com> --- Here output from=20 # dtrace -n 'profile-997hz /arg0/ { @[func(arg0)]=3Dcount(); }' run for about 10 seconds for each state=20 First idle state -- SNIP -- linux_common.ko`linux_kernver 1 linux.ko`linux_gettimeofday 1 linux.ko`linux_sendsig 1 kernel`ithread_loop 2 kernel`witness_checkorder 2 kernel`witness_warn 2 linux.ko`0xffffffff820c2f60 2 kernel`_isitmyx 3 kernel`witness_unlock 4 kernel`vt_fb_bitblt_bitmap 11 kernel`spinlock_exit 11 kernel`cpu_idle 37 kernel`acpi_cpu_idle 26778 And then with cpu0:timer firing at 800k/s -- SNIP -- kernel`pagezero 1 linux.ko`0xffffffff820c2f60 1 kernel`vt_fb_bitblt_text 2 kernel`vt_fb_bitblt_bitmap 11 kernel`lock_mtx 16 kernel`lock_delay 21 kernel`unlock_mtx 31 kernel`cpu_idle 55 kernel`callout_when 57 kernel`witness_lock 77 kernel`callout_reset_sbt_on 85 kernel`spinlock_enter 99 kernel`__mtx_lock_spin_flags 103 kernel`softclock_call_cc 118 kernel`ukbd_timeout 119 kernel`witness_checkorder 150 kernel`__mtx_assert 155 kernel`usbd_in_polling_mode 167 kernel`__mtx_lock_flags 179 kernel`__mtx_unlock_flags 180 kernel`ukbd_interrupt 298 kernel`memcpy 313 kernel`witness_unlock 318 kernel`spinlock_exit 11745 kernel`acpi_cpu_idle 45519 And some procstat -ak during irq storm root@jd2:/usr/home/johannes # procstat -ak|grep 100023 12 100023 intr swi4: clock (0) mi_switch ithread_loop fork_exit fork_trampoline=20 root@jd2:/usr/home/johannes # procstat -ak | grep 100023 12 100023 intr swi4: clock (0) <running>=20=20=20=20= =20=20=20=20=20=20=20=20=20=20=20=20=20=20 root@jd2:/usr/home/johannes # procstat -ak | grep 100023 12 100023 intr swi4: clock (0) callout_reset_sbt_on ukbd_timeout softclock_call_cc softclock intr_event_execute_handlers ithread_loop fork_exit fork_trampoline=20 root@jd2:/usr/home/johannes # procstat -ak | grep 100023 12 100023 intr swi4: clock (0) <running>=20=20=20=20= =20=20=20=20=20=20=20=20=20=20=20=20=20=20 root@jd2:/usr/home/johannes # procstat -ak | grep 100023 12 100023 intr swi4: clock (0) ukbd_timeout softclock_call_cc softclock intr_event_execute_handlers ithread_loop fork_e= xit fork_trampoline=20 root@jd2:/usr/home/johannes # procstat -ak | grep 100023 12 100023 intr swi4: clock (0) <running>=20=20=20=20= =20=20=20=20=20=20=20=20=20=20=20=20=20=20 root@jd2:/usr/home/johannes # procstat -ak | grep 100023 12 100023 intr swi4: clock (0) ukbd_interrupt ukbd_timeout softclock_call_cc softclock intr_event_execute_handlers ithread_loop fork_exit fork_trampoline=20 root@jd2:/usr/home/johannes # procstat -ak | grep 100023 12 100023 intr swi4: clock (0) callout_reset_sbt_on ukbd_timeout softclock_call_cc softclock intr_event_execute_handlers ithread_loop fork_exit fork_trampoline=20 root@jd2:/usr/home/johannes # procstat -ak | grep 100023 12 100023 intr swi4: clock (0) callout_reset_sbt_on ukbd_timeout softclock_call_cc softclock intr_event_execute_handlers ithread_loop fork_exit fork_trampoline=20 root@jd2:/usr/home/johannes # procstat -ak | grep 100023 12 100023 intr swi4: clock (0) <running>=20=20=20=20= =20=20=20=20=20=20=20=20=20=20=20=20=20=20 root@jd2:/usr/home/johannes # procstat -ak | grep 100023 12 100023 intr swi4: clock (0) callout_reset_sbt_on ukbd_timeout softclock_call_cc softclock intr_event_execute_handlers ithread_loop fork_exit fork_trampoline=20 root@jd2:/usr/home/johannes # procstat -ak | grep 100023 12 100023 intr swi4: clock (0) softclock intr_event_execute_handlers ithread_loop fork_exit fork_trampoline=20 root@jd2:/usr/home/johannes # procstat -ak | grep 100023 12 100023 intr swi4: clock (0) ukbd_interrupt ukbd_timeout softclock_call_cc softclock intr_event_execute_handlers ithread_loop fork_exit fork_trampoline --=20 You are receiving this mail because: You are the assignee for the bug.=
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