JVM run JVM Scores 1 82256 2 82226 3 83580 4 81961 5 82331 6 83734 7 84158 8 83921 SPECjbb2005 bops = 664167, SPECjbb2005 bops/JVM = 83021

Hardware Hardware Vendor IBM Corporation Vendor URL http://www.ibm.com Model IBM System p 570 (4.7 GHz, 16 core, RHEL) Processor POWER6 MHz 4700 # of Chips 8 # of Cores 16 # of Cores/Chip 2 HW Threading Enabled? yes Procs Avail to Java 32 Memory (MB) 131072 Memory Details 64 x 2GB DDR2 Primary cache 64KBI+64KBD on chip per core Secondary cache 4MB on chip per core Other cache 32MB off chip per chip Filesystem ext3 Disks 2 x 73GB SAS Other hardware

Software Software Vendor IBM Corporation Vendor URL http://www.ibm.com JVM Version J2RE 1.6.0 (32-bit) IBM J9 2.4 Linux (build pxp3260-20071012_01) JVM Command Line numactl --cpunodebind=node_number --localalloc -- -Xlp -Xgcpolicy:gencon -Xgcthreads4 -Xcompactgc -XlockReservation -Xnoloa -Xms2253m -Xmx2253m -Xmn1843m spec.jbb.JBBmain -propfile SPECjbb.props JVM Initial Heap Memory (MB) 2253 JVM Maximum Heap Memory (MB) 2253 JVM Address bits 32 JVM CLASSPATH ./jbb.jar: ./check.jar: JVM BOOTCLASSPATH /java/jre/lib/vm.jar: /java/jre/lib/facilitators.jar: /java/jre/lib/annotation.jar: /java/jre/lib/beans.jar: /java/jre/lib/java.util.jar: /java/jre/lib/jndi.jar: /java/jre/lib/logging.jar: /java/jre/lib/security.jar: /java/jre/lib/sql.jar: /java/jre/lib/ibmorb.jar: /java/jre/lib/ibmorbapi.jar: /java/jre/lib/ibmcfw.jar: /java/jre/lib/rt.jar: /java/jre/lib/ibmclasses.jar: /java/jre/lib/charsets.jar: /java/jre/lib/resources.jar: /java/jre/lib/ibmpkcs.jar: /java/jre/lib/ibmcertpathfw.jar: /java/jre/lib/ibmjgssfw.jar: /java/jre/lib/ibmjssefw.jar: /java/jre/lib/ibmsaslfw.jar: /java/jre/lib/ibmjcefw.jar: /java/jre/lib/ibmjgssprovider.jar: /java/jre/lib/ibmjsseprovider2.jar: /java/jre/lib/ibmcertpathprovider.jar: /java/jre/lib/ibmxmlcrypto.jar: /java/jre/lib/management-agent.jar: /java/jre/lib/xml.jar: /java/jre/lib/jlm.jar: /java/jre/lib/javascript.jar: /java/jre/lib/RACF.jar OS Version Red Hat Enterprise Linux Advanced Platform 5.1 for IBM POWER (2.6.18-53.el5) Other software

Test Information Tested by IBM Corporation SPEC license # 11 Test location Austin TX Test date Oct 26, 2007 H/w available Jun-2007 JVM available Nov-2007 OS available Oct-2007 Other s/w available

AOT Compilation   Tuning Operating system tunings echo 2000 > /proc/sys/vm/nr_hugepages echo 4000000000 > /proc/sys/kernel/shmmax echo 500000 > /proc/sys/kernel/shmall Notes