请高手帮看下java GC是否需要优化！

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using thread-local object allocation.
Parallel GC with 4 thread(s)

Heap Configuration:
MinHeapFreeRatio = 40
MaxHeapFreeRatio = 70
MaxHeapSize = 2147483648 (2048.0MB)
NewSize = 655360 (0.625MB)
MaxNewSize = 4294901760 (4095.9375MB)
OldSize = 1441792 (1.375MB)
NewRatio = 8
SurvivorRatio = 8
PermSize = 16777216 (16.0MB)
MaxPermSize = 67108864 (64.0MB)

Heap Usage:
PS Young Generation
Eden Space:
capacity = 46530560 (44.375MB)
used = 12718544 (12.129348754882812MB)
free = 33812016 (32.24565124511719MB)
27.333743672975352% used
From Space:
capacity = 1507328 (1.4375MB)
used = 851520 (0.81207275390625MB)
free = 655808 (0.62542724609375MB)
56.49201766304348% used
To Space:
capacity = 1835008 (1.75MB)
used = 0 (0.0MB)
free = 1835008 (1.75MB)
0.0% used
PS Old Generation
capacity = 691273728 (659.25MB)
used = 74837184 (71.37030029296875MB)
free = 616436544 (587.8796997070312MB)
10.825984117249716% used
PS Perm Generation
capacity = 67108864 (64.0MB)
used = 52808984 (50.362571716308594MB)
free = 14299880 (13.637428283691406MB)
78.69151830673218% used


以上是打印出的信息！请教各位……