Migrating Java Applications to HP-UX

Running HPjconfig in non-GUI mode

The following is the -help information for HPconfig:

usage:

HPjconfig [ options ] -gui

HPjconfig [ options ] <object> <action>

objects: -patches &| -tunables

actions: -listreq | -listmis | -listpres | -apply

options:

-patches operate on java-specific patches

-tunables operate on java-specific tunables

-listreq list all java required patches or tunables that are applicable to this system

-listmis list missing java-specific patches or tunables on the system

-listpres list applied (installed) java-specific patches or tunables on the system

-apply apply (install) missing java-specific patches or tunables on the system

-javavers s java versions for selecting patches e.g 1.2, 1.3, 1.4, 5.0, 6.0

-data s local data file with java-specific list of patches and tunables

-[no]gui run in GUI mode

-logfile s name of log file

-proxyhost s HTTP proxy host name for accessing live data

-proxyport s HTTP proxy port for accessing live data

-help show help string and exit

-version show version string

Examples:

List options available in non-gui mode:

$ java -jar ./HPjconfig.jar -nogui -help

List missing patches:

$ java -jar ./HPjconfig.jar -nogui -patches -listmis

List required tunables:

$ java -jar ./HPjconfig.jar -nogui -tunables -listreq

List present patches and tunables

$ java -jar ./HPjconfig.jar -nogui -tunables -patches listpres

List present patches and tunables and write to specified log file

$ java -jar ./HPjconfig.jar -logfile my.log -nogui -tunables -patches listpres

The log file produced can be used for remote analysis of your machine.

Key Factors Affecting Performance

This section discusses some of the key factors that can affect the performance of your java

application:

• Java Heap Size and Garbage Collection Behavior

• Thread Behavior and Lock Contention

• Deployment of Java Instances and Processor Usage

• Other Factors (OS Scheduler, HT, ForceMmapReserved, Exceptions, System Components)