我有一个jesnkins服务器，我必须每周重新启动它，因为它会增加很多重量，只有重新启动才能帮助减轻重量。昨天，我安装了supportcore插件，并生成了一个主堆直方图来检查什么东西变得如此沉重(仅前30个（按#字节排序）
num #instances #bytes class name
-------------------------------------------------------
1: 3848560 262599088 [B (java.base@11.0.1)
2: 494858 103280768 [I (java.base@11.0.1)
3: 2584844 62036256 java.lang.String (java.base@11.0.1)
4: 157507 45826608 [C (java.base@11.0.1)
5: 684481 41221360 [Ljava.lang.Object; (java.base@11.0.1)
6: 976586 31250752 java.util.HashMap$Node (java.base@11.0.1)
7: 123244 30585456 [J (java.base@11.0.1)
8: 493351 27627656 java.util.LinkedHashMap (java.base@11.0.1)
9: 182176 16853376 [Ljava.util.HashMap$Node; (java.base@11.0.1)
10: 110001 16792080 [S (java.base@11.0.1)
11: 134009 15009008 net.bull.javamelody.internal.model.CounterRequest
12: 251974 14054008 [Ljava.lang.String; (java.base@11.0.1)
13: 368318 11786176 java.lang.StringBuffer (java.base@11.0.1)
14: 444222 10661328 com.thoughtworks.xstream.mapper.AnnotationMapper$UnprocessedTypesSet
15: 265811 10632440 java.util.TreeMap$Entry (java.base@11.0.1)
16: 208416 10003968 java.util.HashMap (java.base@11.0.1)
17: 187835 9016080 java.lang.StackTraceElement (java.base@11.0.1)
18: 276934 6646416 com.thoughtworks.xstream.core.util.FastField
19: 3468 5991696 [F (java.base@11.0.1)
20: 79871 5750712 java.util.regex.Matcher (java.base@11.0.1)
21: 233513 5604312 java.lang.StringBuilder (java.base@11.0.1)
22: 63446 5583248 java.lang.reflect.Method (java.base@11.0.1)
23: 169524 5424768 java.util.concurrent.ConcurrentHashMap$Node (java.base@11.0.1)
24: 112296 5220584 [Z (java.base@11.0.1)
25: 118341 4733640 java.util.LinkedHashMap$Entry (java.base@11.0.1)
26: 146209 3509016 java.util.ArrayList (java.base@11.0.1)
27: 4847 3461080 [D (java.base@11.0.1)
28: 103590 3314880 java.io.ObjectStreamClass$WeakClassKey (java.base@11.0.1)
29: 163470 2615520 hudson.ExpressionFactory2$JellyJexlContext
30: 163470 2615520 hudson.ExpressionFactory2$JellyMap今天再次运行（仅前30个按字节排序）：
num #instances #bytes class name
-------------------------------------------------------
1: 917378 122085992 [B (java.base@11.0.1)
2: 707231 16973544 java.lang.String (java.base@11.0.1)
3: 217642 10446816 java.lang.StackTraceElement (java.base@11.0.1)
4: 52682 9972120 [I (java.base@11.0.1)
5: 223415 8936600 java.util.TreeMap$Entry (java.base@11.0.1)
6: 258798 8281536 java.util.HashMap$Node (java.base@11.0.1)
7: 119488 6925288 [Ljava.lang.Object; (java.base@11.0.1)
8: 53554 4973248 [Ljava.util.HashMap$Node; (java.base@11.0.1)
9: 53833 4737304 java.lang.reflect.Method (java.base@11.0.1)
10: 119504 3824128 java.util.concurrent.ConcurrentHashMap$Node (java.base@11.0.1)
11: 30089 3369968 net.bull.javamelody.internal.model.CounterRequest
12: 27040 3053072 [J (java.base@11.0.1)
13: 3814 3045256 [C (java.base@11.0.1)
14: 20852 2477384 java.lang.Class (java.base@11.0.1)
15: 56792 2271680 java.util.LinkedHashMap$Entry (java.base@11.0.1)
16: 64869 2075808 com.codahale.metrics.WeightedSnapshot$WeightedSample
17: 36525 2045400 java.util.LinkedHashMap (java.base@11.0.1)
18: 77482 1859568 java.util.concurrent.ConcurrentSkipListMap$Node (java.base@11.0.1)
19: 74585 1790040 java.util.LinkedList$Node (java.base@11.0.1)
20: 72474 1739376 java.util.ArrayList (java.base@11.0.1)
21: 4501 1692376 java.lang.Thread (java.base@11.0.1)
22: 33868 1625664 java.util.HashMap (java.base@11.0.1)
23: 99319 1589104 java.lang.Object (java.base@11.0.1)
24: 65384 1569216 java.lang.Double (java.base@11.0.1)
25: 31828 1376928 [Ljava.lang.String; (java.base@11.0.1)
26: 53144 1275456 java.util.concurrent.atomic.AtomicLong (java.base@11.0.1)
27: 39555 1265760 java.util.Hashtable$Entry (java.base@11.0.1)
28: 1508 1175040 [Ljava.util.concurrent.ConcurrentHashMap$Node; (java.base@11.0.1)
29: 33640 1076480 java.lang.ref.ReferenceQueue (java.base@11.0.1)
30: 15436 987904 java.net.URL (java.base@11.0.1)Jenkins·弗尔。2.176.3
我想不出是什么问题。有什么想法吗？
暂无答案！
目前还没有任何答案，快来回答吧！