base: Move renderer threads to the appropriate cpuset.

content/renderer/render_thread_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <utility>
@@ skipping 840 matching lines @@
   GetInterfaceRegistry()->AddInterface(base::Bind(CreateEmbeddedWorkerSetup));
 
   GetRemoteInterfaces()->GetInterface(
       mojo::GetProxy(&storage_partition_service_));
 
   device::mojom::TimeZoneMonitorPtr time_zone_monitor;
   GetRemoteInterfaces()->GetInterface(mojo::GetProxy(&time_zone_monitor));
   time_zone_monitor->AddClient(
       time_zone_monitor_binding_.CreateInterfacePtrAndBind());
 
+#if defined(OS_LINUX)
+  ChildProcess::current()->SetIOThreadPriority(base::ThreadPriority::DISPLAY);
+  ChildThreadImpl::current()->SetThreadPriority(
+      categorized_worker_pool_->background_worker_thread_id(),

[Nico, 2016/09/19 20:49:30]

Doesn't the worker pool have more than one id?

[reveman, 2016/09/19 21:43:39]

It has a single thread for background work and N number of threads for
foreground work. Reducing the priority of the thread for background work is
useful to ensure that things like prepaint of contents far away from the
viewport doesn't result in unnecessary power usage or missed frames. 

+      base::ThreadPriority::BACKGROUND);
+#endif
+
   is_renderer_suspended_ = false;
 }
 
 RenderThreadImpl::~RenderThreadImpl() {
 }
 
 void RenderThreadImpl::Shutdown() {
   FOR_EACH_OBSERVER(
       RenderThreadObserver, observers_, OnRenderProcessShutdown());
 
@@ skipping 256 matching lines @@
   base::Thread::Options options;
 #if defined(OS_ANDROID)
   options.priority = base::ThreadPriority::DISPLAY;
 #endif
   compositor_thread_.reset(new WebThreadForCompositor(options));
   blink_platform_impl_->SetCompositorThread(compositor_thread_.get());
   compositor_task_runner_ = compositor_thread_->GetTaskRunner();
   compositor_task_runner_->PostTask(
       FROM_HERE,
       base::Bind(base::IgnoreResult(&ThreadRestrictions::SetIOAllowed), false));
+#if defined(OS_LINUX)
+  ChildThreadImpl::current()->SetThreadPriority(compositor_thread_->threadId(),
+                                                base::ThreadPriority::DISPLAY);
+#endif
 
   SynchronousInputHandlerProxyClient* synchronous_input_handler_proxy_client =
       nullptr;
 #if defined(OS_ANDROID)
   if (GetContentClient()->UsingSynchronousCompositing()) {
     sync_compositor_message_filter_ =
         new SynchronousCompositorFilter(compositor_task_runner_);
     AddFilter(sync_compositor_message_filter_.get());
     synchronous_input_handler_proxy_client =
         sync_compositor_message_filter_.get();
@@ skipping 1127 matching lines @@
   if (blink::mainThreadIsolate()) {
     blink::mainThreadIsolate()->MemoryPressureNotification(
         v8::MemoryPressureLevel::kCritical);
     blink::MemoryPressureNotificationToWorkerThreadIsolates(
         v8::MemoryPressureLevel::kCritical);
   }
 }
 
 
 }  // namespace content