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Posted to dev@rocketmq.apache.org by GitBox <gi...@apache.org> on 2022/10/10 09:43:13 UTC

[GitHub] [rocketmq] zhouquanwei opened a new issue, #5262: 消息队列RocketMQ版客户端消耗的内存过多

zhouquanwei opened a new issue, #5262:
URL: https://github.com/apache/rocketmq/issues/5262

   
   
   1. Please describe the issue you observed:
   
   - What did you do (The steps to reproduce)?
   在使用rocketmq 的过程中，发现当生产者发送过多消息，但是消费端消费过慢会出现
   消费端频繁gc，我认为是消费端 缓存mq数量过多造成的
   
   - What is expected to see?
   我想控制一下消费端缓存消息的数量
   - What did you see instead?
   我看见 阿里云上面有解决方案  调整Consumer的maxCachedMessageSizeInMiB参数至合适的值，
   但是使用这个在master 直接查询，并没有查到这个变量控制 消息缓存的大小
   https://help.aliyun.com/document_detail/85936.html
   
   不知道现在是没有，还是说，我的查询关键字有问题


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[GitHub] [rocketmq] KerryJava commented on issue #5262: 消息队列RocketMQ版客户端消耗的内存过多

Posted by GitBox <gi...@apache.org>.

KerryJava commented on issue #5262:
URL: https://github.com/apache/rocketmq/issues/5262#issuecomment-1284166971

   默认值1000条消息，100M的缓存，貌似也不大啊，为何有GC问题？


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[GitHub] [rocketmq] zhouquanwei commented on issue #5262: 消息队列RocketMQ版客户端消耗的内存过多

Posted by GitBox <gi...@apache.org>.

zhouquanwei commented on issue #5262:
URL: https://github.com/apache/rocketmq/issues/5262#issuecomment-1284182241

   > 默认值1000条消息，100M的缓存，貌似也不大啊，为何有GC问题？
   
   阿里云上面说 每个topic 有16个队列，每个队列1000条，这样就有点大了，我算了算 要缓存1个g


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[GitHub] [rocketmq] nowinkeyy commented on issue #5262: 消息队列RocketMQ版客户端消耗的内存过多

Posted by GitBox <gi...@apache.org>.

nowinkeyy commented on issue #5262:
URL: https://github.com/apache/rocketmq/issues/5262#issuecomment-1273165166

   I found some information In `client/src/main/java/org/apache/rocketmq/client/consumer/DefaultMQPushConsumer.java` .
   
   **In rocketmq 4.4**
   
   ![image](https://user-images.githubusercontent.com/72536832/194854293-ad723545-72d5-4c36-a145-cdbcbec1d49f.png)
   
   **In rocketmq 5.0**
   
   ![1665400760107](https://user-images.githubusercontent.com/72536832/194854761-ac83ed88-6eda-428d-a90e-42922cfdbacf.png)
   
   


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[GitHub] [rocketmq] zhouquanwei commented on issue #5262: 消息队列RocketMQ版客户端消耗的内存过多

Posted by GitBox <gi...@apache.org>.

zhouquanwei commented on issue #5262:
URL: https://github.com/apache/rocketmq/issues/5262#issuecomment-1284178954

   > 
   阿里云说 一个topic有16个队列，每个队列1000条,这样计算就有点大了
   
   
   


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[GitHub] [rocketmq] ni-ze commented on issue #5262: 消息队列RocketMQ版客户端消耗的内存过多

Posted by GitBox <gi...@apache.org>.

ni-ze commented on issue #5262:
URL: https://github.com/apache/rocketmq/issues/5262#issuecomment-1273988975

   开源的和商业参数名称有一些不一样，但是都是可以通过参数控制，可以看看 @nowinkeyy 同学的回复。


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[GitHub] [rocketmq] lizhanhui commented on issue #5262: 消息队列RocketMQ版客户端消耗的内存过多

Posted by GitBox <gi...@apache.org>.

lizhanhui commented on issue #5262:
URL: https://github.com/apache/rocketmq/issues/5262#issuecomment-1273988324

   @aaron-ai  We may make this value heuristic...that is, their default value may be calculated according to the heap size. 


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[GitHub] [rocketmq] zhouquanwei closed issue #5262: 消息队列RocketMQ版客户端消耗的内存过多

Posted by GitBox <gi...@apache.org>.

zhouquanwei closed issue #5262: 消息队列RocketMQ版客户端消耗的内存过多
URL: https://github.com/apache/rocketmq/issues/5262


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