henrypoter commented on issue #1671: what is the rightway to use producer send async messages URL: https://github.com/apache/rocketmq/issues/1671#issuecomment-568833451 > Maybe the performance nest is on the client-side. > In async mode, the client sends messages without waiting for responses from the broker. So, actually the broker has no business with that. Maybe it is the client-side that the defaultAsyncSenderExecutor can not follow the speed of sending messages. Thanks. I reproduce the scene, the producer client node‘s cpu load is too high. Maybe defaultAsyncSenderExecutor exhausts cpu， so the task thread have no to time to send message to broker.
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