性能问答>g1 大流量下单台机器出现fgc>
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11月前

g1 大流量下单台机器出现fgc



2021-06-01T00:03:38.940+0800: 163264.095: [GC pause (G1 Evacuation Pause) (young) (to-space exhausted), 8.9443481 secs]
[Parallel Time: 7986.1 ms, GC Workers: 8]
[GC Worker Start (ms): Min: 163264097.6, Avg: 163264097.8, Max: 163264097.9, Diff: 0.3]
[Ext Root Scanning (ms): Min: 2.3, Avg: 17.8, Max: 108.8, Diff: 106.5, Sum: 142.6]
[Update RS (ms): Min: 555.0, Avg: 605.2, Max: 627.5, Diff: 72.4, Sum: 4841.9]
[Processed Buffers: Min: 733, Avg: 977.6, Max: 1903, Diff: 1170, Sum: 7821]
[Scan RS (ms): Min: 21.3, Avg: 27.8, Max: 35.4, Diff: 14.1, Sum: 222.2]
[Code Root Scanning (ms): Min: 0.0, Avg: 0.0, Max: 0.0, Diff: 0.0, Sum: 0.0]
[Object Copy (ms): Min: 7280.3, Avg: 7334.4, Max: 7397.0, Diff: 116.7, Sum: 58675.0]
[Termination (ms): Min: 0.0, Avg: 0.1, Max: 0.1, Diff: 0.1, Sum: 0.6]
[Termination Attempts: Min: 1, Avg: 1.0, Max: 1, Diff: 0, Sum: 8]
[GC Worker Other (ms): Min: 0.0, Avg: 0.0, Max: 0.0, Diff: 0.0, Sum: 0.2]
[GC Worker Total (ms): Min: 7985.8, Avg: 7985.9, Max: 7986.0, Diff: 0.2, Sum: 63887.3]
[GC Worker End (ms): Min: 163272083.7, Avg: 163272083.7, Max: 163272083.7, Diff: 0.0]
[Code Root Fixup: 0.2 ms]
[Code Root Purge: 0.0 ms]
[Clear CT: 0.7 ms]
[Other: 957.3 ms]
[Evacuation Failure: 939.1 ms]
[Choose CSet: 0.0 ms]
[Ref Proc: 10.3 ms]
[Ref Enq: 0.3 ms]
[Redirty Cards: 3.8 ms]
[Humongous Register: 0.0 ms]
[Humongous Reclaim: 0.0 ms]
[Free CSet: 0.2 ms]
[Eden: 6432.0M(7456.0M)->0.0B(8000.0M) Survivors: 544.0M->0.0B Heap: 11.7G(11.7G)->11.7G(11.7G)]
Heap after GC invocations=2109 (full 7):
garbage-first heap total 12288000K, used 12271824K [0x00000004f2000000, 0x00000004f4000bb8, 0x00000007e0000000)
region size 32768K, 0 young (0K), 0 survivors (0K)
Metaspace used 297076K, capacity 305479K, committed 309504K, reserved 1323008K
class space used 31787K, capacity 34022K, committed 35072K, reserved 1048576K
}
[Times: user=18.31 sys=5.07, real=8.94 secs]
{Heap before GC invocations=2109 (full 7):
garbage-first heap total 12288000K, used 12271824K [0x00000004f2000000, 0x00000004f4000bb8, 0x00000007e0000000)
region size 32768K, 0 young (0K), 0 survivors (0K)
Metaspace used 297076K, capacity 305479K, committed 309504K, reserved 1323008K
class space used 31787K, capacity 34022K, committed 35072K, reserved 1048576K
2021-06-01T00:03:47.900+0800: 163273.055: [Full GC (Allocation Failure) 11G->1806M(11G), 7.4196351 secs]
[Eden: 0.0B(8000.0M)->0.0B(8000.0M) Survivors: 0.0B->0.0B Heap: 11.7G(11.7G)->1806.5M(11.7G)], [Metaspace: 297076K->296839K(1323008K)]
Heap after GC invocations=2110 (full 8):
garbage-first heap total 12288000K, used 1849807K [0x00000004f2000000, 0x00000004f4000bb8, 0x00000007e0000000)
region size 32768K, 0 young (0K), 0 survivors (0K)
Metaspace used 296839K, capacity 304993K, committed 309504K, reserved 1323008K
class space used 31740K, capacity 33941K, committed 35072K, reserved 1048576K
}
[Times: user=10.17 sys=0.18, real=7.42 secs]

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