ES GC日志解读

GC日志：

[2020-06-18T10:16:30,090][WARN ][o.e.m.j.JvmGcMonitorService] [es.ngsocnode4.qianxin.cn.0] [gc][8312841] overhead, spent [11.1m] collecting in the last [11.1m]

日志解读：

[gc][这是第8312841次GC 检查] 在最近11.1m 内花了11.1m用来做垃圾收集

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GC日志：

[2020-06-18T10:17:12,181][WARN ][o.e.m.j.JvmGcMonitorService] [es.ngsocnode4.qianxin.cn.0] [gc][old][8312842][19750] duration [42s], collections [3]/[42s], total [42s]/[1.3h], memory [14.2gb]->[14.1gb]/[29.8gb], all_pools {[young] [17.7mb]->[1.7mb]/[1.2gb]}{[survivor] [0b]->[0b]/[153.5mb]}{[old] [14.1gb]->[14.1gb]/[28.5gb]}

日志解读：

[本次GC为old] [是第8312842次GC检查] [从jvm启动是第19750次] [本次检查耗时42s], [从上次检查至今总共发生3次GC]/[从上次检查至今已过去42秒], [本次检查到的GC总耗时为42s秒]/[从 JVM 启动至今发生的 GC 总耗时为1.3h小时],

memory [14.2gb]->[14.1gb]/[29.8gb]
[GC前Heapmemory空间] -> [GC后Heapmemory空间]/[Heapmemory总空间],

 all_pools {[young] [17.7mb]->[1.7mb]/[1.2gb]}{[survivor] [0b]->[0b]/[153.5mb]}{[old] [14.1gb]->[14.1gb]/[28.5gb]}
{[young 区][GC 前 Memory ]->[GC后 Memory]/[young区 Memory 总大小] } {[survivor 区][GC 前 Memory ]->[GC后 Memory]/[survivor区 Memory 总大小] }{[old 区][GC 前 Memory ]->[GC后 Memory]/[old区 Memory 总大小] }
{[young]     [17.7mb]    ->      [1.7mb]/[1.2gb]}                     {[survivor]    [0b]       ->     [0b]/[153.5mb]}                      [old]          [14.1gb]->[14.1gb]/[28.5gb]