One of the JVM tuning the parameters - XX: PretenureSizeThreshold, can set more than setting value of large objects, directly into old age, set this value if the production environment, run, some of the object is not a long time, but that can be attributed to set this parameter will directly into old age, to enter the old s only when Full GC to clean up these large objects, more similar request, can produce a lot of such a large object, all the old s that this setting will not lead to more prone to Full GC?