C++ Client - Batch Messages - changing group commit time to 10ms (apa…

…che#467)

pulsar-client-cpp/lib/ProducerConfigurationImpl.h

@@ -42,7 +42,7 @@ struct ProducerConfigurationImpl {
               batchingEnabled(false),
               batchingMaxMessages(1000),
               batchingMaxAllowedSizeInBytes(128 * 1024), // 128 KB
-              batchingMaxPublishDelayMs(3000) { // 3 seconds
+              batchingMaxPublishDelayMs(10) { // 10 milli seconds
     }
 };
 }