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DBLE 开启useSqlStat参数后出现内存冲高 #3615

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TommyZC opened this issue Feb 16, 2023 · 1 comment
Open

DBLE 开启useSqlStat参数后出现内存冲高 #3615

TommyZC opened this issue Feb 16, 2023 · 1 comment
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@TommyZC
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TommyZC commented Feb 16, 2023

  • dble version：2.19.03/lts
  • preconditions ：useSqlStat=1

dump信息如下：

topConsumer
topLoader
suspect
dominator_tree2
Histogram
Histogram2
从dump中看到是ConcurrentSkipListMap占用了大部分JVM内存，里边是UserSqlLastStat$sqlLast，开启useSqlStat功能后会使用到，不太理解的是DBLE为什么会有这么多的ConcurrentSkipListMap占用空间，而且map里边看到还有map，帮忙看一下是哪里的逻辑导致生成了这么多的ConcurrentSkipListMap。
源码中是在这里初始化了map和sqlLast
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@LUAgam LUAgam added the memory label Feb 17, 2023
@LUAgam
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LUAgam commented Feb 17, 2023

need to provide a complete memory stack for analysis
questions can be reported in the QQ group 669663113.

@PanternBao PanternBao added the community issue from community label Feb 17, 2023
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@LUAgam @PanternBao @TommyZC