zhxjdwh opened a new issue #3252:
URL: https://github.com/apache/rocketmq/issues/3252
**BUG REPORT**
the rocketmq_client.log file spent to mush cache/buffer !!!!!!!!!
These log files really consume too much cache/buffer. The jvm memory usage
of my container is only 500M, but the log buffer/cache of Rocketmq consumes 2G
of memory.
这几个日志文件实在消耗了太多cache/buffer了，我容器的jvm内存使用才500M，但是rocketmq的日志buffer/cache就消耗了2G的内存
```
[root@node135
f914151fc9ae5ce5f477a8d0d69ed9b0ebbb2ea45be3aec0f0acbde859d3e3b1]#
/usr/local/bin/vmtouch ./diff/root/logs/rocketmqlogs/**rocketmq_client.log**
Files: 1
Directories: 0
**Resident Pages: 198301/198301 774M/774M 100%**
Elapsed: 0.03113 seconds
[root@node135
f914151fc9ae5ce5f477a8d0d69ed9b0ebbb2ea45be3aec0f0acbde859d3e3b1]#
/usr/local/bin/vmtouch ./diff/root/logs/rocketmqlogs/**rocketmq_client.log.1**
Files: 1
Directories: 0
**Resident Pages: 262145/262145 1G/1G 100%**
Elapsed: 0.042067 seconds
[root@node135
f914151fc9ae5ce5f477a8d0d69ed9b0ebbb2ea45be3aec0f0acbde859d3e3b1]#
/usr/local/bin/vmtouch **./diff/root/logs/rocketmqlogs/rocketmq_client.log.2**
Files: 1
Directories: 0
**Resident Pages: 120207/262145 469M/1G 45.9%**
Elapsed: 0.020819 seconds
```
**FEATURE REQUEST**
Reduce the buffer/cache memory usage of log files
减少log文件的buffer/cache内存占用
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