Github user lizhanhui commented on a diff in the pull request:
https://github.com/apache/incubator-rocketmq/pull/61#discussion_r101709294
--- Diff: common/src/main/java/org/apache/rocketmq/common/BrokerConfig.java
---
@@ -47,6 +47,7 @@
private boolean autoCreateSubscriptionGroup = true;
private String messageStorePlugIn = "";
+ //thread counts for sending message, if large number threads are
needed, we suggest setting useReentrantLockWhenPutMessage=true(in
MessageStoreConfig)
--- End diff --
@Jaskey , would you carry out an experiment, figuring out when spin-lock is
better and when the alternative mutex-lock wins out?
You may compose an article based on that experiment, which should be added
to [best
practice](http://rocketmq.incubator.apache.org/docs/best-practice-broker/)
section of RocketMQ official website. It's currently vacant!
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