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[Performance Issue] High Consumption Delay with Large Message Volume on Latest Version #4

Description

@ddmg-250

Description:
Hi,

I've noticed a significant increase in consumption delay when processing large volumes of messages using the latest version of RocketMQ . Here are more details:

Environment Setup:
Operating System: Linux Ubuntu 20.04 LTS
JVM Version: OpenJDK 11
Steps to Reproduce:
Start RocketMQ broker and producer.
Send 1 million messages at a rate of 10,000 msgs/sec.
Observe that consumer lags behind significantly after several minutes.
Expected Behavior:
Expected no noticeable delay between message production and consumption under such load conditions.
Actual Behavior:
Consumer experiences delays up to 5 minutes behind the producer.

Could anyone provide insights or suggestions on how to mitigate this performance issue? Thank you!

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