G1 日志解析

G1 GC 日志

2020-04-08T13:37:57.402+0800: 317780.856: Application time: 1.7859709 seconds
2020-04-08T13:38:00.137+0800: 317783.591: Application time: 2.7316155 seconds
{Heap before GC invocations=54601 (full 2):
 garbage-first heap   total 12582912K, used 7858402K [0x00000004c0000000, 0x00000004c0803000, 0x00000007c0000000)
  region size 8192K, 122 young (999424K), 16 survivors (131072K)
 Metaspace       used 173730K, capacity 186222K, committed 186368K, reserved 1216512K
  class space    used 17662K, capacity 19184K, committed 19200K, reserved 1048576K
2020-04-08T13:38:00.141+0800: 317783.595: [GC pause (G1 Evacuation Pause) (young)
Desired survivor size 67108864 bytes, new threshold 1 (max 8)
- age   1:  133934832 bytes,  133934832 total
, 0.1140744 secs]
   [Parallel Time: 110.4 ms, GC Workers: 5]
      [GC Worker Start (ms): Min: 317783595.6, Avg: 317783595.6, Max: 317783595.7, Diff: 0.1]
      [Ext Root Scanning (ms): Min: 2.6, Avg: 2.9, Max: 3.3,