GC log norm

Java HotSpot(TM) Client VM (25.121-b13) for windows-x86 JRE (1.8.0_121-b13), built on Dec 12 2016 18:17:00 by "java_re" with MS VC++ 10.0 (VS2010)
Memory: 4k page, physical 3142848k(754476k free), swap 7854604k(3516228k free)
CommandLine flags: -XX:InitialHeapSize=16777216 -XX:MaxHeapSize=268435456 -XX:+PrintGC -XX:+PrintGCTimeStamps -XX:-UseLargePagesIndividualAllocation
0.279: [GC (Allocation Failure)  4416K->3049K(15872K), 0.0140617 secs]
0.303: [GC (Allocation Failure)  7465K->6588K(15872K), 0.0270880 secs]
0.343: [GC (Allocation Failure)  11004K->10797K(15872K), 0.0244885 secs]
0.378: [GC (Allocation Failure)  13976K->13795K(18304K), 0.0220150 secs]
0.400: [Full GC (Allocation Failure)  13795K->10610K(18304K), 0.0648959 secs]
0.552: [GC (Allocation Failure)  17842K->17563K(25748K), 0.0690632 secs]
0.639: [GC (Allocation Failure)  24795K->24517K(31860K), 0.0303468 secs]
0.670: [Full GC (Allocation Failure)  24517K->19258K(31860K), 0.0931686 secs]
0.859: [GC (Allocation Failure)  32122K->31588K(46564K), 0.0721610 secs]
0.984: [GC (Allocation Failure)  41082K->40482K(53348K), 0.0617150 secs]
1.046: [Full GC (Allocation Failure)  40482K->33998K(53348K), 0.1731444 secs]
1.581: [GC (Allocation Failure)  56718K->55778K(82200K), 0.1008560 secs]
1.776: [GC (Allocation Failure)  78498K->77559K(100308K), 0.0997305 secs]
1.878: [Full GC (Allocation Failure)  77559K->60241K(100308K), 0.2994286 secs]
2.317: [GC (Allocation Failure)  100497K->98833K(145652K), 0.1685865 secs]
2.554: [GC (Allocation Failure)  137359K->135516K(175860K), 0.2623991 secs]
2.819: [Full GC (Allocation Failure)  135516K->112516K(175860K), 0.5576898 secs]
3.491: [GC (Allocation Failure)  182468K->179567K(253440K), 0.3087468 secs]
3.886: [Full GC (Allocation Failure)  249519K->192405K(253440K), 0.9540330 secs]
5.182: [Full GC (Allocation Failure)  253439K->238180K(253440K), 1.3230675 secs]
6.758: [Full GC (Allocation Failure)  253439K->249625K(253440K), 1.2548573 secs]
8.154: [Full GC (Allocation Failure)  253439K->252486K(253440K), 1.1597826 secs]
9.336: [Full GC (Allocation Failure)  252812K->252731K(253440K), 1.1406199 secs]
10.477: [Full GC (Allocation Failure)  252731K->252715K(253440K), 1.3934997 secs]