[jboss-user] [JBoss Cache: Core Edition] - Re: JBoss Cache performance looks pretty poor :(

phpguy99 do-not-reply at jboss.com
Tue Jul 22 19:41:24 EDT 2008


Reposting my config again now with code-tag:

<?xml version="1.0" encoding="UTF-8"?>

    
        jboss:service=Naming
        jboss:service=TransactionManager
        
            org.jboss.cache.transaction.GenericTransactionManagerLookup
        

      READ_COMMITTED

      false

      REPL_SYNC

      JBossCache-Cluster
     
         
            <UDP mcast_addr="228.1.2.3" mcast_port="48866"
                 ip_ttl="64" ip_mcast="true"
                 mcast_send_buf_size="150000" mcast_recv_buf_size="80000"
                 ucast_send_buf_size="150000" ucast_recv_buf_size="80000"
                 loopback="false"/>
            <PING timeout="2000" num_initial_members="3"/>
            <MERGE2 min_interval="10000" max_interval="20000"/>
            
            <FD_SOCK/>
            <VERIFY_SUSPECT timeout="1500"/>
            <pbcast.NAKACK gc_lag="50" retransmit_timeout="600,1200,2400,4800" />
            
            <pbcast.STABLE desired_avg_gossip="400000"/>
            <FC max_credits="2000000" min_threshold="0.10"/>
            <FRAG2 frag_size="8192"/>
            <pbcast.GMS join_timeout="5000" shun="true" print_local_addr="true"/>
            <pbcast.STATE_TRANSFER/>
         
      

      20000

      20000

      15000
   



$ jmap -histo 14359   ## for 200,000 of my object in the cache.

 num     #instances         #bytes  class name
----------------------------------------------
   1:       6058302      290798496  java.util.concurrent.locks.ReentrantLock$NonfairSync
   2:       6058260      290796480  java.util.concurrent.ConcurrentHashMap$Segment
   3:       6058260      198060352  [Ljava.util.concurrent.ConcurrentHashMap$HashEntry;
   4:        379178       57632968  [Ljava.util.HashMap$Entry;
   5:        378642       57553488  [Ljava.util.concurrent.ConcurrentHashMap$Segment;
   6:        765551       57436024  [C
   7:        378601       33316888  org.jboss.cache.UnversionedNode
   8:        763508       30540320  java.lang.String
   9:        378601       30288080  org.jboss.cache.invocation.NodeInvocationDelegate
  10:        378642       27262224  java.util.concurrent.ConcurrentHashMap
  11:        378600       27259200  org.jboss.cache.lock.NonBlockingWriterLock
  12:        379058       24259712  java.util.HashMap
  13:        383949       18429552  java.util.concurrent.ConcurrentHashMap$HashEntry
  14:        379889       18234672  java.util.HashMap$Entry
  15:        378600       18172800  org.jboss.cache.lock.IdentityLock
  16:        396538       15881688  [Ljava.lang.Object;
  17:        384436       15377440  java.util.ArrayList
  18:        381480       15259200  org.jboss.cache.Fqn
  19:        378599       15143960  com.ssn.jbosscache.Meter
  20:        378600       12115200  org.jboss.cache.lock.LockMap
  21:        378600        9086400  org.jboss.cache.lock.ReadWriteLockWithUpgrade$WriterLock
  22:        378600        9086400  org.jboss.cache.lock.ReadWriteLockWithUpgrade$ReaderLock
  23:        378600        9086400  org.jboss.cache.util.concurrent.ConcurrentHashSet
  24:        378600        9086400  org.jboss.cache.lock.LockStrategyReadCommitted
  25:         21274        2804184  
  26:         21274        2560560  
  27:          1838        2036776  
  28:         33111        1620128  
  29:          1838        1356816  
  30:          1612        1315584  
  31:          2919         552944  [I
  32:          2123         544336  [B
  33:          2989         454328  java.lang.reflect.Method
  34:          2008         369472  java.lang.Class




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