mcrouter: provide option to enable event base time measurement

Summary: This is sometimes useful to debug latency issues in bigcache. Reviewed By: andreazevedo Differential Revision: D7004793 fbshipit-source-id: 6f35995223ff1ac8f91581fa32efad785779907d
facebook · Feb 17, 2018 · 247fc42 · 247fc42
1 parent 47e845a
commit 247fc42
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Showing 2 changed files with 7 additions and 2 deletions.
diff --git a/mcrouter/lib/network/AsyncMcServer.cpp b/mcrouter/lib/network/AsyncMcServer.cpp
@@ -155,7 +155,7 @@ class McServerThread {
   explicit McServerThread(AsyncMcServer& server, size_t id)
       : server_(server),
         evb_(std::make_unique<folly::EventBase>(
-            /* enableTimeMeasurement */ false)),
+            server.opts_.worker.enableEventBaseTimeMeasurement)),
         id_(id),
         worker_(server.opts_.worker, *evb_),
         acceptCallback_(this, false),
@@ -169,7 +169,7 @@ class McServerThread {
   McServerThread(AcceptorT, AsyncMcServer& server, size_t id)
       : server_(server),
         evb_(std::make_unique<folly::EventBase>(
-            /* enableTimeMeasurement */ false)),
+            server.opts_.worker.enableEventBaseTimeMeasurement)),
         id_(id),
         worker_(server.opts_.worker, *evb_),
         acceptCallback_(this, false),

diff --git a/mcrouter/lib/network/AsyncMcServerWorkerOptions.h b/mcrouter/lib/network/AsyncMcServerWorkerOptions.h
@@ -34,6 +34,11 @@ struct AsyncMcServerWorkerOptions {
    */
   bool singleWrite{false};
 
+  /**
+   * If true, time measurement in event base is enabled.
+   */
+  bool enableEventBaseTimeMeasurement{false};
+
   /**
    * Maximum number of read system calls per event loop iteration.
    * If 0, there is no limit.