holmes07 commented on pull request #13464:
URL: https://github.com/apache/pulsar/pull/13464#issuecomment-1000692148
> We'd better decrease the weight but should be bigger than 0. Because it
can reflect the heap usage.
###
**some gc detail on my case, it happens about every 10s(this may be
relevant to -XX:MaxGCPauseMillis=500) ，only about 25% memory usage
survivors(maybe 0.25 is one option value). But as eden space is not a stable
zone , the memory usage is depends on both the load report moment and the gc
trigger moment . if the default loadBalancerHistoryResourcePercentage = 0.9
decrease to a more sensitivity value, it may has higher chance to cause some
traffic flow from one broker to other broker frequently . i think maybe cpu
&network& directMemory is enough to refect the real traffic**
[Eden: 9816.0M(9816.0M)->0.0B(9816.0M) Survivors: 8192.0K->8192.0K Heap:
13.4G(16.0G)->3954.4M(16.0G)]
[Eden: 9816.0M(9816.0M)->0.0B(9816.0M) Survivors: 8192.0K->8192.0K Heap:
13.4G(16.0G)->3954.4M(16.0G)]
[Eden: 9816.0M(9816.0M)->0.0B(9816.0M) Survivors: 8192.0K->8192.0K Heap:
13.4G(16.0G)->3954.8M(16.0G)]
[Eden: 9816.0M(9816.0M)->0.0B(9816.0M) Survivors: 8192.0K->8192.0K Heap:
13.4G(16.0G)->3954.6M(16.0G)]
[Eden: 9816.0M(9816.0M)->0.0B(9816.0M) Survivors: 8192.0K->8192.0K Heap:
13.4G(16.0G)->3955.1M(16.0G)]
[Eden: 9816.0M(9816.0M)->0.0B(9816.0M) Survivors: 8192.0K->8192.0K Heap:
13.4G(16.0G)->3955.0M(16.0G)]
[Eden: 9816.0M(9816.0M)->0.0B(9816.0M) Survivors: 8192.0K->8192.0K Heap:
13.4G(16.0G)->3955.4M(16.0G)]
[Eden: 9816.0M(9816.0M)->0.0B(9816.0M) Survivors: 8192.0K->8192.0K Heap:
13.4G(16.0G)->3955.4M(16.0G)]
[Eden: 9816.0M(9816.0M)->0.0B(9816.0M) Survivors: 8192.0K->8192.0K Heap:
13.4G(16.0G)->3955.8M(16.0G)]
[Eden: 9816.0M(9816.0M)->0.0B(9816.0M) Survivors: 8192.0K->8192.0K Heap:
13.4G(16.0G)->3956.1M(16.0G)]
[Eden: 9816.0M(9816.0M)->0.0B(9816.0M) Survivors: 8192.0K->8192.0K Heap:
13.4G(16.0G)->3957.3M(16.0G)]
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