java gc 日志_java GC日志该怎么看？

亦凉 2022-11-01 15:49 178阅读 0赞

\{Heap before GC invocations=70426 (full 39):

par new generation total 917504K, used 849770K \[0x0000000730000000, 0x0000000770000000, 0x0000000770000000)

eden space 786432K, 100% used \[0x0000000730000000, 0x0000000760000000, 0x0000000760000000)

from space 131072K, 48% used \[0x0000000760000000, 0x0000000763dda9d8, 0x0000000768000000)

to space 131072K, 0% used \[0x0000000768000000, 0x0000000768000000, 0x0000000770000000)

concurrent mark-sweep generation total 1050496K, used 735717K \[0x0000000770000000, 0x00000007b01e0000, 0x00000007f0000000)

concurrent-mark-sweep perm gen total 262144K, used 44072K \[0x00000007f0000000, 0x0000000800000000, 0x0000000800000000)

2017-03-11T17:52:34.524+0800: 86930.373: \[GC2017-03-11T17:52:34.524+0800: 86930.373: \[ParNew

Desired survivor size 67108864 bytes, new threshold 15 (max 15)

\- age 1: 7498968 bytes, 7498968 total

\- age 2: 10419016 bytes, 17917984 total

\- age 3: 9045656 bytes, 26963640 total

\- age 4: 3149912 bytes, 30113552 total

\- age 5: 1557968 bytes, 31671520 total

\- age 6: 1181200 bytes, 32852720 total

\- age 7: 900696 bytes, 33753416 total

\- age 8: 1135200 bytes, 34888616 total

\- age 9: 1545448 bytes, 36434064 total

\- age 10: 1038000 bytes, 37472064 total

\- age 11: 1199288 bytes, 38671352 total

\- age 12: 840296 bytes, 39511648 total

\- age 13: 1264520 bytes, 40776168 total

\- age 14: 1005752 bytes, 41781920 total

\- age 15: 1008152 bytes, 42790072 total

: 849770K->62511K(917504K), 0.0296150 secs\] 1585488K->798923K(1968000K), 0.0299000 secs\] \[Times: user=0.11 sys=0.00, real=0.03 secs\]

Heap after GC invocations=70427 (full 39):

par new generation total 917504K, used 62511K \[0x0000000730000000, 0x0000000770000000, 0x0000000770000000)

eden space 786432K, 0% used \[0x0000000730000000, 0x0000000730000000, 0x0000000760000000)

from space 131072K, 47% used \[0x0000000768000000, 0x000000076bd0bf30, 0x0000000770000000)

to space 131072K, 0% used \[0x0000000760000000, 0x0000000760000000, 0x0000000768000000)

concurrent mark-sweep generation total 1050496K, used 736411K \[0x0000000770000000, 0x00000007b01e0000, 0x00000007f0000000)

concurrent-mark-sweep perm gen total 262144K, used 44072K \[0x00000007f0000000, 0x0000000800000000, 0x0000000800000000)

上面是我的一个GC日志，我想问这种日志该怎么看呢？之前只是学过一些理论的东西，头一次接触真正的GC日志

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