[jboss-user] [Performance Tuning] - Re: How Can I monitoring java heap with jstat?

[erasmo2 marciano2]

erasmo2 marciano2 [https://community.jboss.org/people/erasmomarciano] created the discussion

"Re: How Can I monitoring java heap with jstat?"

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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 at 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
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