wu-sheng commented on issue #3064: To improve DataCarrier URL: https://github.com/apache/skywalking/issues/3064#issuecomment-511342424 This extra `gc.time` is quiet little, comparing to 3x time OPs. Also, you should know, more GC may be caused by more OPs, think in this way, you do 3x times OPs, how many more `SampleData`s do you create? So, more GC conclusion actually is not quite right. The reason is more likely, Arraylist is always better. If you have change test in JVM 1.6
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