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Sun ONE Portal Server 3.0 Rewriter Configuration and Management Guide

Sep 13, 2002

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Performance

Performance is an important consideration when deploying a high usage multi-user Portal Server. Detailed maximum throughput in a baseline architecture is beyond the scope of this guide, but gateway tuning parameters are discussed, along with some basic guidelines about creating rewriter rules and their affect on the overall performance of the rewriter.

Tuning Recommendations

This section contains several tables with tuning recommendations.

The following are the /etc/system entries:

Entry	Value
tcp_conn_hash_size	8192
rlim_fd_max	16384
rlim_fd_cur	16384

The following are the TCP parameter values that are set on both the Portal Server and gateway components:

Entry	Value
tcp_time_wait_interval	60000 (60 seconds)
tcp_conn_req_max_q	1024
tcp_conn_req_max_q0	4096
tcp_slow_start_initial	2

Use ndd(1M) to check or change the default TCP parameter values to those specified above, as in the following example:

root@ips-gateway: ndd /dev/tcp tcp_time_wait_interval
240000
root@ips-gateway: ndd -set /dev/tcp tcp_time_wait_interval 60000
root@ips-gateway: ndd /dev/tcp tcp_time_wait_interval
60000

The following table contains the performance configuration for the Sun ONE Web Server 4.1 for use with Portal Server.

Parameter Name	Location	Value	Remarks
jvm.minHeapSize	jvm12.conf	134217728	64 Mbytes
jvm.maxHeapSize	jvm12.conf	805306368	768 Mbytes
	jvm12.conf	"-Xgenconfig:32m, 64m, semispaces:32m, 704m, markcompact"	The JDK 1.2.2_09 provides better performance and scalability with the genconfig and optimize options.¹
	obj.conf	Init fn="cache-init" disable="true"	Disable Sun ONE Web Server cache for static pages and images.
RqThrottle	magnus.conf	128	With Web Server SP5, the maximum number of active threads is calculated using the formula RqThrottle + MaxKeepAliveConnections.²
MaxKeepAliveConnections	magnus.conf	72

More gateway-specific performance tuning is discussed in the SP4 Hot Patch 1 release notes.

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