test

Sun Java System Web Server 7.0 Update 8 Performance Tuning, Sizing, and Scaling Guide

Network Configuration

Since the tests use multiple network interfaces, it is important to make sure that all the network interfaces are not going to the same core. Network interrupts were enabled on one strand and disabled on the remaining three strand of a core using the following script:


allpsr=`/usr/sbin/psrinfo | grep -v off-line | awk '{ print $1 }'`
  set $allpsr
  numpsr=$#
  while [ $numpsr -gt 0 ];
  do
      shift
      numpsr=`expr $numpsr - 1`
      tmp=1
      while [ $tmp -ne 4 ];
      do
          /usr/sbin/psradm -i $1
          shift
          numpsr=`expr $numpsr - 1`
          tmp=`expr $tmp + 1`
      done
  done

The following example shows psrinfo output before running the script:


# psrinfo | more
0       on-line   since 12/06/2006 14:28:34
1       on-line   since 12/06/2006 14:28:35
2       on-line   since 12/06/2006 14:28:35
3       on-line   since 12/06/2006 14:28:35
4       on-line   since 12/06/2006 14:28:35
5       on-line   since 12/06/2006 14:28:35
.................

The following example shows psrinfo output after running the script:


0       on-line   since 12/06/2006 14:28:34
1       no-intr   since 12/07/2006 09:17:04
2       no-intr   since 12/07/2006 09:17:04
3       no-intr   since 12/07/2006 09:17:04
4       on-line   since 12/06/2006 14:28:35
5       no-intr   since 12/07/2006 09:17:04
          .................