你看懂Elasticsearch Log中的GC日志了吗？

2020-06-01 00:00:00 线程算法对象内存垃圾

如果你关注过 elasticsearch 的日志，可能会看到如下类似的内容：

[2018-06-30T17:57:23,848][WARN ][o.e.m.j.JvmGcMonitorService] [qoo--eS] [gc][228384] overhead, spent [2.2s] collecting in the last [2.3s]



[2018-06-30T17:57:29,020][INFO ][o.e.m.j.JvmGcMonitorService] [qoo--eS] [gc][old][228385][160772] duration [5s], collections [1]/[5.1s], total [5s]/[4.4d], memory [945.4mb]->[958.5mb]/[1007.3mb], all_pools {[young] [87.8mb]->[100.9mb]/[133.1mb]}{[survivor] [0b]->[0b]/[16.6mb]}{[old] [857.6mb]->[857.6mb]/[857.6mb]}

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