i don't know why gc problem happen recently days,
the log is always this:
: [ParNew: 296662K->34048K(306688K), 0.0294340 secs] 5306677K->5044854K(8248064K), 0.0295360 secs] [Times: user=0.11 sys=0.00, real=0.03 secs]
2017-08-22T02:21:12.013+0000: 11262587.479: [GC2017-08-22T02:21:12.013+0000: 11262587.479: [ParNew: 306688K->34048K(306688K), 0.0370250 secs] 5317494K->5068413K(8248064K), 0.0371240 secs] [Times: user=0.13 sys=0.00, real=0.03 secs]
2017-08-22T02:21:13.035+0000: 11262588.501: [GC2017-08-22T02:21:13.035+0000: 11262588.501: [ParNew: 306688K->33372K(306688K), 0.0373350 secs] 5341053K->5082510K(8248064K), 0.0374430 secs] [Times: user=0.14 sys=0.01, real=0.04 secs]
2017-08-22T02:21:14.489+0000: 11262589.955: [GC2017-08-22T02:21:14.489+0000: 11262589.955: [ParNew: 305988K->34048K(306688K), 0.0428780 secs] 5355126K->5103359K(8248064K), 0.0429900 secs] [Times: user=0.16 sys=0.00, real=0.05 secs]
2017-08-22T02:21:15.347+0000: 11262590.813: [GC2017-08-22T02:21:15.347+0000: 11262590.813: [ParNew: 306688K->31570K(306688K), 0.0470600 secs] 5375999K->5120513K(8248064K), 0.0471600 secs] [Times: user=0.17 sys=0.00, real=0.05 secs]
2017-08-22T02:21:16.249+0000: 11262591.715: [GC2017-08-22T02:21:16.249+0000: 11262591.715: [ParNew: 304210K->23486K(306688K), 0.0359270 secs] 5393153K->5131304K(8248064K), 0.0360280 secs] [Times: user=0.12 sys=0.00, real=0.04 secs]
2017-08-22T02:21:17.097+0000: 11262592.563: [GC2017-08-22T02:21:17.097+0000: 11262592.563: [ParNew: 296126K->28639K(306688K), 0.0344450 secs] 5403944K->5149017K(8248064K), 0.0345440 secs] [Times: user=0.13 sys=0.00, real=0.03 secs]
2017-08-22T02:21:18.416+0000: 11262593.882: [GC2017-08-22T02:21:18.416+0000: 11262593.882: [ParNew: 301279K->27553K(306688K), 0.0329930 secs] 5421657K->5158434K(8248064K), 0.0331100 secs] [Times: user=0.13 sys=0.00, real=0.03 secs]
i don't konw what i should do