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GC日誌分析

[GC [PSYoungGen: 4423K->320K(9216K)] 4423K->320K(58880K), 0.0011900 secs] [Times: user=0.01 sys=0.00, real=0.01 secs] 
[Full GC (System) [PSYoungGen: 320K->0K(9216K)] [ParOldGen: 0K->222K(49664K)] 320K->222K(58880K) [PSPermGen: 2458K->2456K(21248K)], 0.0073610 secs] [Times: user=0.01 sys=0.00, real=0.00 secs] 
Heap
 PSYoungGen      total 9216K, used 491K [0x00000000ff600000, 0x0000000100000000, 0x0000000100000000)
  eden space 8192K, 6% used [0x00000000ff600000,0x00000000ff67af50,0x00000000ffe00000)
  from space 1024K, 0% used [0x00000000ffe00000,0x00000000ffe00000,0x00000000fff00000)
  to   space 1024K, 0% used [0x00000000fff00000,0x00000000fff00000,0x0000000100000000)
 ParOldGen       total 49664K, used 222K [0x00000000c5800000, 0x00000000c8880000, 0x00000000ff600000)
  object space 49664K, 0% used [0x00000000c5800000,0x00000000c58378a0,0x00000000c8880000)
 PSPermGen       total 21248K, used 2466K [0x00000000c0600000, 0x00000000c1ac0000, 0x00000000c5800000)
  object space 21248K, 11% used [0x00000000c0600000,0x00000000c0868b48,0x00000000c1ac0000)