[haltode@sexus ~]$ jmap -histo 27604 | head -n 20
 num     #instances         #bytes  class name (module)
-------------------------------------------------------
   1:     556765035   583484484400  [B (java.base@12.0.1)
   2:             2     5047568000  [[B (java.base@12.0.1)
   3:         18772       12136976  [I (java.base@12.0.1)
   4:          1371         249096  java.lang.Class (java.base@12.0.1)
   5:          7675         245600  java.lang.String (java.base@12.0.1)
   6:          1503         195080  [Ljava.lang.Object; (java.base@12.0.1)
   7:          3851         184848  java.util.HashMap$Node (java.base@12.0.1)
   8:          3507         168336  java.util.concurrent.ConcurrentHashMap$Node (java.base@12.0.1)
   9:          1476          94464  sun.util.locale.LocaleObjectCache$CacheEntry (java.base@12.0.1)
  10:           334          91472  [Ljava.util.HashMap$Node; (java.base@12.0.1)
  11:            91          64456  [Ljava.util.concurrent.ConcurrentHashMap$Node; (java.base@12.0.1)
  12:           804          45024  java.lang.ref.SoftReference (java.base@12.0.1)
  13:           737          41272  sun.util.locale.BaseLocale (java.base@12.0.1)
  14:           738          35424  java.util.Locale (java.base@12.0.1)
  15:            19          34192  [C (java.base@12.0.1)
  16:           737          29480  sun.util.locale.BaseLocale$Key (java.base@12.0.1)
  17:           162          25920  java.lang.reflect.Method (java.base@12.0.1)
  18:           366          23424  java.util.HashMap (java.base@12.0.1)
[haltode@sexus ~]$ jstat -gcutil 27604
  S0     S1     E      O      M     CCS    YGC     YGCT    FGC    FGCT    CGC    CGCT     GCT   
  0.00 100.00  94.12  53.70  96.38      -    165 69316.616     0    0.000     4    0.041 69316.657