eclipse下的gc.log记录：
6.784: [gc 6.784: [defnew: 104960k->13056k(118016k), 0.0856665 secs] 104960k->17927k(511232k), 0.0857391 secs] [times: user=0.08 sys=0.00, real=0.08 secs] 8.144: [gc 8.144: [defnew: 118016k->4143k(118016k), 0.0643708 secs] 122887k->21978k(511232k), 0.0644467 secs] [times: user=0.05 sys=0.01, real=0.06 secs] 11.657: [gc 11.657: [defnew: 109103k->12866k(118016k), 0.0700544 secs] 126938k->30701k(511232k), 0.0701338 secs] [times: user=0.08 sys=0.00, real=0.08 secs] 14.137: [gc 14.137: [defnew: 117826k->13056k(118016k), 0.1268122 secs] 135661k->52924k(511232k), 0.1268960 secs]