diff options
| -rw-r--r-- | mojo/edk/system/node_controller.cc | 4 | ||||
| -rw-r--r-- | tools/metrics/histograms/histograms.xml | 9 |
2 files changed, 13 insertions, 0 deletions
diff --git a/mojo/edk/system/node_controller.cc b/mojo/edk/system/node_controller.cc index 698238d..58c87e2 100644 --- a/mojo/edk/system/node_controller.cc +++ b/mojo/edk/system/node_controller.cc @@ -14,6 +14,7 @@ #include "base/message_loop/message_loop.h" #include "base/metrics/histogram_macros.h" #include "base/process/process_handle.h" +#include "base/timer/elapsed_timer.h" #include "crypto/random.h" #include "mojo/edk/embedder/embedder_internal.h" #include "mojo/edk/embedder/platform_channel_pair.h" @@ -143,8 +144,11 @@ void NodeController::ConnectToParent(ScopedPlatformHandle platform_handle) { #if defined(OS_POSIX) && !defined(OS_MACOSX) // On posix, use the bootstrap channel for the broker and receive the node's // channel synchronously as the first message from the broker. + base::ElapsedTimer timer; broker_.reset(new Broker(std::move(platform_handle))); platform_handle = broker_->GetParentPlatformHandle(); + UMA_HISTOGRAM_TIMES("Mojo.System.GetParentPlatformHandleSyncTime", + timer.Elapsed()); #endif io_task_runner_->PostTask( diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml index 02c325c..3a70aa9 100644 --- a/tools/metrics/histograms/histograms.xml +++ b/tools/metrics/histograms/histograms.xml @@ -22237,6 +22237,15 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries. </summary> </histogram> +<histogram name="Mojo.System.GetParentPlatformHandleSyncTime" units="ms"> + <owner>rockot@chromium.org</owner> + <summary> + Measures the time it takes for a child to receive its parent platform handle + synchronously from the broker on startup. This only applies to the subset of + platforms on which the sync broker is used. + </summary> +</histogram> + <histogram name="Mojo.System.Node.ConnectedPeers"> <owner>rockot@chromium.org</owner> <summary> |