(gdb) thread apply all bt

Thread 20 (Thread 0x7fffd4cc5700 (LWP 8640)):
#0  0x00007fffef0d7d84 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007fff93f930db in ?? () from /usr/lib/vst/jostvst.so
#2  0x00007fff93e6b238 in ?? () from /usr/lib/vst/jostvst.so
#3  0x00007fff93f96cb6 in ?? () from /usr/lib/vst/jostvst.so
#4  0x00007fff93f986b4 in ?? () from /usr/lib/vst/jostvst.so
#5  0x00007fff93e6b165 in ?? () from /usr/lib/vst/jostvst.so
#6  0x00007fff93d8ef75 in ?? () from /usr/lib/vst/jostvst.so
#7  0x00007fff93e533f4 in ?? () from /usr/lib/vst/jostvst.so
#8  0x00007fff93f91051 in ?? () from /usr/lib/vst/jostvst.so
#9  0x00007fffef0d3e9a in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#10 0x00007fffecaef3fd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#11 0x0000000000000000 in ?? ()

Thread 19 (Thread 0x7fffb9446700 (LWP 8624)):
#0  0x00007fffef0db52d in nanosleep ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007ffff39d60b8 in g_usleep () from /opt/ardour3/lib/libglib-2.0.so.0
#2  0x00007ffff726e170 in ARDOUR::AudioEngine::meter_thread (this=0x1f35510)
    at ../libs/ardour/audioengine.cc:382
---Type <return> to continue, or q <return> to quit---
#3  0x00007ffff727a2df in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x262cc10, p=0x1f35510)
    at /home/harrison/a3/inst/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff7279eae in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (this=0x262cc20, f=..., a=...)
    at /home/harrison/a3/inst/include/boost/bind/bind.hpp:253
#5  0x00007ffff7279787 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (this=0x262cc10)
    at /home/harrison/a3/inst/include/boost/bind/bind_template.hpp:20
#6  0x00007ffff7278f60 in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > > >::operator() (this=0x262cc10)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#7  0x00007ffff727809a in sigc::internal::slot_call0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >, void>::call_it (rep=0x262cbe0)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff4144542 in ?? () from /opt/ardour3/lib/libglibmm-2.4.so.1
#9  0x00007ffff39d49e3 in ?? () from /opt/ardour3/lib/libglib-2.0.so.0
#10 0x00007fffef0d3e9a in start_thread ()
---Type <return> to continue, or q <return> to quit---
   from /lib/x86_64-linux-gnu/libpthread.so.0
#11 0x00007fffecaef3fd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#12 0x0000000000000000 in ?? ()

Thread 18 (Thread 0x7fffd40b5700 (LWP 8623)):
#0  0x00007fffef0da0c1 in sem_timedwait ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007fffe5cdfa42 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#2  0x00007fffe5cc5b6c in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#3  0x00007fffe5cc45c7 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#4  0x00007fffe5f6e14e in ARDOUR::JACKAudioBackend::process_thread (
    this=0x238f430) at ../libs/backends/jack/jack_audiobackend.cc:935
#5  0x00007fffe5f6e0fe in ARDOUR::JACKAudioBackend::_process_thread (
    arg=0x238f430) at ../libs/backends/jack/jack_audiobackend.cc:921
#6  0x00007fffe5cc32a7 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#7  0x00007fffe5cdeb20 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#8  0x00007fffef0d3e9a in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#9  0x00007fffecaef3fd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#10 0x0000000000000000 in ?? ()

Thread 17 (Thread 0x7fffe4fc1700 (LWP 8622)):
#0  0x00007fffef0dad2d in read () from /lib/x86_64-linux-gnu/libpthread.so.0
---Type <return> to continue, or q <return> to quit---
#1  0x00007fffe5ce09eb in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#2  0x00007fffe5ce394a in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#3  0x00007fffe5cdeb20 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#4  0x00007fffef0d3e9a in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fffecaef3fd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 16 (Thread 0x7fffe527a700 (LWP 8621)):
#0  0x00007fffef0d7d84 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007fffe5ce0114 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#2  0x00007fffe5cd6c05 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#3  0x00007fffe5cdeb20 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#4  0x00007fffef0d3e9a in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fffecaef3fd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7fffd7bdf700 (LWP 8595)):
#0  0x00007fffecae3a43 in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff39b896f in g_poll () from /opt/ardour3/lib/libglib-2.0.so.0
#2  0x00007ffff39a79f1 in ?? () from /opt/ardour3/lib/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#3  0x00007ffff39a736f in ?? () from /opt/ardour3/lib/libglib-2.0.so.0
#4  0x00007ffff39a7468 in g_main_context_iteration ()
   from /opt/ardour3/lib/libglib-2.0.so.0
#5  0x00007ffff39a8f6f in ?? () from /opt/ardour3/lib/libglib-2.0.so.0
#6  0x00007ffff39d49e3 in ?? () from /opt/ardour3/lib/libglib-2.0.so.0
#7  0x00007fffef0d3e9a in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#8  0x00007fffecaef3fd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fffe724b700 (LWP 8585)):
#0  0x00007fffef0d7d84 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007ffff39f939d in g_cond_wait () from /opt/ardour3/lib/libglib-2.0.so.0
#2  0x00007ffff721c5ab in ARDOUR::Analyser::work ()
    at ../libs/ardour/analyser.cc:81
#3  0x00007ffff721c341 in analyser_work () at ../libs/ardour/analyser.cc:46
#4  0x0000000001330733 in sigc::pointer_functor0<void>::operator()() const ()
#5  0x000000000132dc46 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator()() const ()
#6  0x000000000132a2e9 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x1f78a50)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
---Type <return> to continue, or q <return> to quit---
#7  0x00007ffff4144542 in ?? () from /opt/ardour3/lib/libglibmm-2.4.so.1
#8  0x00007ffff39d49e3 in ?? () from /opt/ardour3/lib/libglib-2.0.so.0
#9  0x00007fffef0d3e9a in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#10 0x00007fffecaef3fd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#11 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fffe7a4c700 (LWP 8584)):
#0  0x00007fffef0d7d84 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007ffff39f939d in g_cond_wait () from /opt/ardour3/lib/libglib-2.0.so.0
#2  0x00007ffff76a6421 in peak_thread_work ()
    at ../libs/ardour/source_factory.cc:68
#3  0x0000000001330733 in sigc::pointer_functor0<void>::operator()() const ()
#4  0x000000000132dc46 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator()() const ()
#5  0x000000000132a2e9 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x1f980b0)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff4144542 in ?? () from /opt/ardour3/lib/libglibmm-2.4.so.1
#7  0x00007ffff39d49e3 in ?? () from /opt/ardour3/lib/libglib-2.0.so.0
#8  0x00007fffef0d3e9a in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
---Type <return> to continue, or q <return> to quit---
#9  0x00007fffecaef3fd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#10 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fffe824d700 (LWP 8583)):
#0  0x00007fffef0d7d84 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007ffff39f939d in g_cond_wait () from /opt/ardour3/lib/libglib-2.0.so.0
#2  0x00007ffff76a6421 in peak_thread_work ()
    at ../libs/ardour/source_factory.cc:68
#3  0x0000000001330733 in sigc::pointer_functor0<void>::operator()() const ()
#4  0x000000000132dc46 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator()() const ()
#5  0x000000000132a2e9 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x1f96990)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff4144542 in ?? () from /opt/ardour3/lib/libglibmm-2.4.so.1
#7  0x00007ffff39d49e3 in ?? () from /opt/ardour3/lib/libglib-2.0.so.0
#8  0x00007fffef0d3e9a in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#9  0x00007fffecaef3fd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fffe8a4e700 (LWP 8582)):
---Type <return> to continue, or q <return> to quit---
#0  0x00007fffecabb08d in nanosleep () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fffecae8eb4 in usleep () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x000000000165c082 in gui_event_loop (ptr=0x0)
    at ../gtk2_ardour/linux_vst_gui_support.cc:380
#3  0x00007fffef0d3e9a in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#4  0x00007fffecaef3fd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ffff7fa6900 (LWP 8537)):
#0  0x00007fffef0d7d84 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007fff93f9706b in ?? () from /usr/lib/vst/jostvst.so
#2  0x00007fff93f62a17 in ?? () from /usr/lib/vst/jostvst.so
#3  0x00007fff93d82bc5 in ?? () from /usr/lib/vst/jostvst.so
#4  0x00007fff93d82ef5 in ?? () from /usr/lib/vst/jostvst.so
#5  0x00007fff93d89c64 in ?? () from /usr/lib/vst/jostvst.so
#6  0x00007fff93d8de6b in VSTPluginMain () from /usr/lib/vst/jostvst.so
#7  0x00007ffff76ed3e9 in vstfx_instantiate (fhandle=0x33fb6d0, 
    amc=0x7ffff76eeb64 <simple_master_callback(AEffect*, int32_t, int32_t, intptr_t, void*, float)>, userptr=0x0) at ../libs/ardour/linux_vst_support.cc:317
#8  0x00007ffff76eecb3 in vstfx_get_info (
    dllpath=0x33bfc98 "/usr/lib/vst/jostvst.so")
---Type <return> to continue, or q <return> to quit---
    at ../libs/ardour/linux_vst_info_file.cc:385
#9  0x00007ffff74f2d10 in ARDOUR::PluginManager::lxvst_discover (
    this=0x1f1d000, path=...) at ../libs/ardour/plugin_manager.cc:706
#10 0x00007ffff74f2b4d in ARDOUR::PluginManager::lxvst_discover_from_path (
    this=0x1f1d000, path=...) at ../libs/ardour/plugin_manager.cc:689
#11 0x00007ffff74f282a in ARDOUR::PluginManager::lxvst_refresh (this=0x1f1d000)
    at ../libs/ardour/plugin_manager.cc:654
#12 0x00007ffff74f0bbf in ARDOUR::PluginManager::refresh (this=0x1f1d000)
    at ../libs/ardour/plugin_manager.cc:187
#13 0x00007ffff73ac247 in ARDOUR::init_post_engine ()
    at ../libs/ardour/globals.cc:354
#14 0x0000000000cee06a in ARDOUR_UI::post_engine (this=0x21492b0)
    at ../gtk2_ardour/ardour_ui.cc:462
#15 0x0000000000cedb65 in ARDOUR_UI::engine_running (this=0x21492b0)
    at ../gtk2_ardour/ardour_ui.cc:402
#16 0x0000000000d301bb in boost::_mfi::mf0<void, ARDOUR_UI>::operator() (
    this=0x262e488, p=0x21492b0)
    at /home/harrison/a3/inst/include/boost/bind/mem_fn_template.hpp:49
#17 0x0000000000d2a366 in boost::_bi::list1<boost::_bi::value<ARDOUR_UI*> >::operator()<boost::_mfi::mf0<void, ARDOUR_UI>, boost::_bi::list0> (this=0x262e498, 
    f=..., a=...) at /home/harrison/a3/inst/include/boost/bind/bind.hpp:253
#18 0x0000000000d23ca9 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR_UI>, boost::_bi::list1<boost::_bi::value<ARDOUR_UI*> > >::operator() (
---Type <return> to continue, or q <return> to quit---
    this=0x262e488)
    at /home/harrison/a3/inst/include/boost/bind/bind_template.hpp:20
#19 0x0000000000d1f094 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR_UI>, boost::_bi::list1<boost::_bi::value<ARDOUR_UI*> > >, void>::invoke (function_obj_ptr=...)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:153
#20 0x0000000000cdd9c3 in boost::function0<void>::operator() (this=0x262e480)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:760
#21 0x0000000000ce104a in boost::_bi::list0::operator()<boost::function<void ()>, boost::_bi::list0>(boost::_bi::type<void>, boost::function<void ()>&, boost::_bi::list0&, int) (this=0x262e4a0, f=...)
    at /home/harrison/a3/inst/include/boost/bind/bind.hpp:192
#22 0x0000000000ce0975 in boost::_bi::bind_t<boost::_bi::unspecified, boost::function<void ()>, boost::_bi::list0>::operator()() (this=0x262e480)
    at /home/harrison/a3/inst/include/boost/bind/bind_template.hpp:20
#23 0x0000000000cdff77 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<boost::_bi::unspecified, boost::function<void ()>, boost::_bi::list0>, void>::invoke(boost::detail::function::function_buffer&) (
    function_obj_ptr=...)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:153
#24 0x0000000000cdd9c3 in boost::function0<void>::operator() (
    this=0x7fffffffaf00)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:760
---Type <return> to continue, or q <return> to quit---
#25 0x00007ffff60f1925 in AbstractUI<Gtkmm2ext::UIRequest>::call_slot(PBD::EventLoop::InvalidationRecord*, boost::function<void ()> const&) (this=0x21492b0, 
    invalidation=0x0, f=...)
    at /home/harrison/ardour/3.0/libs/pbd/pbd/abstract_ui.cc:361
#26 0x0000000000cdcbb6 in PBD::Signal0<void, PBD::OptionalLastValue<void> >::compositor(boost::function<void ()>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*) (f=..., event_loop=0x21492b0, ir=0x0)
    at /home/harrison/ardour/3.0/build/libs/pbd/pbd/signals_generated.h:198
#27 0x0000000000ce12e5 in boost::_bi::list3<boost::_bi::value<boost::function<void ()> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*> >::operator()<void (*)(boost::function<void ()>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*), boost::_bi::list0>(boost::_bi::type<void>, void (*&)(boost::function<void ()>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*), boost::_bi::list0&, int) (this=0x262e418, 
    f=@0x262e410: 0xcdcb27 <PBD::Signal0<void, PBD::OptionalLastValue<void> >::compositor(boost::function<void ()>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*)>, a=...) at /home/harrison/a3/inst/include/boost/bind/bind.hpp:392
#28 0x0000000000ce0abd in boost::_bi::bind_t<void, void (*)(boost::function<void ()>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*), boost::_bi::list3<boost::_bi::value<boost::function<void ()> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*> > >::operator()() (
    this=0x262e410)
    at /home/harrison/a3/inst/include/boost/bind/bind_template.hpp:20
---Type <return> to continue, or q <return> to quit---
#29 0x0000000000ce00f2 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, void (*)(boost::function<void ()>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*), boost::_bi::list3<boost::_bi::value<boost::function<void ()> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*> > >, void>::invoke(boost::detail::function::function_buffer&) (function_obj_ptr=...)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:153
#30 0x0000000000cdd9c3 in boost::function0<void>::operator() (this=0x262ed50)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:760
#31 0x0000000000d07ad5 in PBD::Signal0<void, PBD::OptionalLastValue<void> >::operator() (this=0x1f35760)
    at /home/harrison/ardour/3.0/build/libs/pbd/pbd/signals_generated.h:307
#32 0x00007ffff726f656 in ARDOUR::AudioEngine::start (this=0x1f35510, 
    for_latency=false) at ../libs/ardour/audioengine.cc:629
#33 0x00007ffff75b2e61 in ARDOUR::Session::ensure_engine (this=0x293b660, 
    desired_sample_rate=48000) at ../libs/ardour/session.cc:377
#34 0x00007ffff75ae95c in ARDOUR::Session::Session (this=0x293b660, eng=..., 
    fullpath=..., snapshot_name=..., bus_profile=0x0, mix_template=...)
    at ../libs/ardour/session.cc:313
#35 0x0000000000cfe4a7 in ARDOUR_UI::load_session (this=0x21492b0, path=..., 
    snap_name=..., mix_template=...) at ../gtk2_ardour/ardour_ui.cc:2816
#36 0x0000000000cfe00e in ARDOUR_UI::get_session_parameters (this=0x21492b0, 
    quit_on_cancel=false, should_be_new=false, load_template=...)
---Type <return> to continue, or q <return> to quit---
    at ../gtk2_ardour/ardour_ui.cc:2747
#37 0x0000000000cf3939 in ARDOUR_UI::starting (this=0x21492b0)
    at ../gtk2_ardour/ardour_ui.cc:828
#38 0x00007ffff60e5599 in Gtkmm2ext::UI::run (this=0x21492b0, old_receiver=...)
    at ../libs/gtkmm2ext/gtk_ui.cc:268
#39 0x00000000011196e1 in main (argc=1, argv=0x7fffffffd258)
    at ../gtk2_ardour/main.cc:519