[GitHub] iamzhoug37 commented on issue #249: master-slave sync model performance improve

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iamzhoug37 commented on issue #249: master-slave sync model performance improve
URL: https://github.com/apache/rocketmq/issues/249#issuecomment-396801624
 
 
   first question: the flush disk and slave fetch message  are performed concurrently.
   second question: I guess you are using sync_flush,the flush of dis or other in lock operation cost too much time,then causes the other thread wait on lock cost too much.The lock has cost,but this cost is acceptable compared to disk flush.

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