On AIX systems, Caching Proxy performance can be improved by using system scope threads and allowing multiple heaps to be used by threads. Performance is related to the operating system's multiprocessing ability and the thread scheduling of the underlying operating system. Performance improvement can be achieved by setting the following AIX thread tuning variables as follows:
export AIXTHREAD_SCOPE=S export SPINLOOPTIME=500 export YIELDLOOPTIME=100 export MALLOCMULTIHEAP=1
You can set these environment variables prior to starting /usr/sbin/ibmproxy or add them to /etc/rc.ibmproxy if you use the startsrc -s ibmproxy command to start the proxy server. Performance improvement is most evident on SMP systems but in some cases improvement might also be evident on uniprocessor systems.