erasmo2 marciano2 [https://community.jboss.org/people/erasmomarciano] created the discussion "Re: How Can I monitoring java heap with jstat?" To view the discussion, visit: https://community.jboss.org/message/777734#777734 -------------------------------------------------------------- Hi thanks for reply I know jconsole and other strument for calcolate the sum Heap. I usally i run kill -3 on the PID [rhusar@rhusar as-master]$ jmap -histo:live 18281 | head num     #instances         #bytes  class name ----------------------------------------------    1:        176916       24493688  <constMethodKlass>    2:        176916       24077408  <methodKlass>    3:         22170       23879160  <constantPoolKlass>    4:         22170       18736416  <instanceKlassKlass>    5:        139987       13574248  [C    6:        198198       12992576  [B    7:         18624       12898400  <constantPoolCacheKlass> For calculate the sum Heap i have additional the point 1 2 ..7 ?  I have a result in byte thank -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/777734#777734] Start a new discussion in Performance Tuning at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]