[Bug 212812] www/chromium: tabs "hang" 10% of the time

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=212812

--- Comment #10 from Ori Bernstein <ori at eigenstate.org> ---
Seems to be an issue talking to the render thread.

If it helps, I have an nvidia gpu.

$ bt
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x0000000807e58aa6 in _thr_umtx_timedwait_uint (mtx=0x808072ed0,
id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
at /usr/src/lib/libthr/thread/thr_umtx.c:
#2  0x0000000807e62510 in cond_wait_user (abstime=0x0, cancel=1, cvp=<optimized
out>, mp=<optimized out>) at /usr/src/lib/libthr/thread/thr_cond.c:294
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x0,
cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:354
#4  0x0000000005790c28 in mojo::edk::Waiter::Wait(unsigned long, unsigned
long*) ()
#5  0x0000000005775f8d in mojo::edk::Core::WaitManyInternal(unsigned int
const*, unsigned int const*, unsigned int, unsigned long, unsigned int*,
mojo::edk::HandleSignalsState*) ()
#6  0x0000000005775c7e in mojo::edk::Core::Wait(unsigned int, unsigned int,
unsigned long, MojoHandleSignalsState*) ()
#7  0x00000000054ba9c9 in mojo::SyncHandleRegistry::WatchAllHandles(bool
const**, unsigned long) ()
#8  0x00000000054af362 in
IPC::SyncChannel::WaitForReply(mojo::SyncHandleRegistry*,
IPC::SyncChannel::SyncContext*, bool) ()
#9  0x00000000054aeeb4 in IPC::SyncChannel::Send(IPC::Message*) ()
#10 0x00000000063e0212 in non-virtual thunk to
gpu::GpuChannel::Send(IPC::Message*) ()
#11 0x0000000007865b86 in content::RenderThreadImpl::Send(IPC::Message*) ()
#12 0x00000000044f076d in
extensions::RuntimeCustomBindings::OpenChannelToExtension(v8::FunctionCallbackInfo<v8::Value>
const&) ()
#13 0x00000000044ecdd6 in
extensions::ObjectBackedNativeHandler::Router(v8::FunctionCallbackInfo<v8::Value>
const&) ()
#14 0x00000000039cb1dc in v8::internal::FunctionCallbackArguments::Call(void
(*)(v8::FunctionCallbackInfo<v8::Value> const&)) ()
#15 0x0000000003a2fdb0 in v8::internal::MaybeHandle<v8::internal::Object>
v8::internal::(anonymous
namespace)::HandleApiCallHelper<false>(v8::internal::Isolate*,
v8::internal::Handle<v8::int
rguments) ()
#16 0x0000000003a2f33d in
v8::internal::Builtin_Impl_HandleApiCall(v8::internal::BuiltinArguments,
v8::internal::Isolate*) ()
#17 0x0000390c31e063a7 in ?? ()
#18 0x0000000003efe480 in ?? ()
#19 0x0000390c31e062e1 in ?? ()
#20 0x00007fffffff9300 in ?? ()
#21 0x0000000300000000 in ?? ()
#22 0x00007fffffff9398 in ?? ()
#23 0x0000390c31f25eca in ?? ()
#24 0x0000021a05f04311 in ?? ()
#25 0x0000084188e290c9 in ?? ()
#26 0x0000000700000000 in ?? ()
#27 0x0000021a05f04421 in ?? ()
#28 0x00000d783b0fefc1 in ?? ()
#29 0x00001309bce09cd9 in ?? ()
#30 0x00001309bce10901 in ?? ()
#31 0x0000084188e290c9 in ?? ()
#32 0x0000021a05f04311 in ?? ()
#33 0x0000021a05f04421 in ?? ()
#34 0x00000d783b0fefc1 in ?? ()
#35 0x00001309bce151c9 in ?? ()
#36 0x00001309bce12189 in ?? ()
#37 0x00007fffffff93d8 in ?? ()
#38 0x0000390c31e4a7c3 in ?? ()
#39 0x000007f92d31c559 in ?? ()
#40 0x00001309bce09cd9 in ?? ()
#41 0x00001309bce12cb1 in ?? ()
#42 0x0000032935db3661 in ?? ()
#43 0x0000390c31e4a6e1 in ?? ()
#44 0x0000000c00000000 in ?? ()
#45 0x00007fffffff9440 in ?? ()
#46 0x0000390c31e2aa81 in ?? ()
#47 0x0000000000000000 in ?? ()

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