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Sun Java System Web Server Configuration Notes

SJSW can be used in several ways, like a Servlet/JSP engine and or a Static File serving server and or running traditional NSAPI plug ins.

Unless a lot of caching or huge Java-Heap is needed, the 32bit web server is good for most generic cases.

Given below are some generic tunings applicable to a server capable of serving all of the above for about 8000 connections.

magnus.conf
---------------------
ListenQ: 8192
ConnQueueSize: 8192
RqThrottle: 128
ThreadIncrement: 128
UseNativePoll: 1
KeepAliveTimeout: 30
MaxKeepAliveConnections: 8192
KeepAliveThreads: 2
KeepAliveQueryMeanTime: 50

Init fn="cache-init" disable="true"
Init fn="pool-init" block-size="65536"

nsfc.conf
---------------------
FileCacheEnable=on
CacheFileContent=on
TransmitFile=off
MaxAge=3600
MediumFileSizeLimit=1000001
MediumFileSpace=1
SmallFileSizeLimit=500000
SmallFileSpace=1000000000
MaxFiles=16384
MaxOpenFiles=16384

server.xml
---------------------
Make sure to use the following JVM parameters

<JVMOPTIONS>-server</JVMOPTIONS>
<JVMOPTIONS>-Xbatch</JVMOPTIONS>
<JVMOPTIONS>-Xloggc:/tmp/gc.log</JVMOPTIONS>
<JVMOPTIONS>-Xmx1024m</JVMOPTIONS>
<JVMOPTIONS>-Xms1024m</JVMOPTIONS>
<JVMOPTIONS>-XX:ParallelGCThreads=4</JVMOPTIONS>
<JVMOPTIONS>-XX:+DisableExplicitGC</JVMOPTIONS>
<JVMOPTIONS>-XX:-BindGCTaskThreadsToCPUs</JVMOPTIONS>

Replace
LIBMTMALLOC=/usr/lib/libmtmalloc.so
with
LIBMTMALLOC=/usr/lib/libumem.so