Storage modules

A: Yes, please do !
Rename and edit modules/storage_print.c that is an example for developers.
When your storage module is ready, send it to the perfparse development team who will probably include it in next release.

A: print : for storage modules developers and hackers only
stdout : prints the perfdata on stdout with the same syntax as Nagios
mysql : fills a mysql database with perfdata
file_output : write the perfdata into files. Rotation of files is possible
socket_output : connects to a server (perfparsed) and write the perfdata there

A: They are plugins to output the performance data in different ways, according to your needs.

A: You have to load the mysql storage module. Either edit your config file and update Storage_Modules_Dir? and Storage_Modules_Load?, or use the --storage_modules_dir and --storage_modules_load options on the command line.

On Solaris, this can be not enough. You may have to add the path to the storage modules into LD_LIBRARY_PATH or better, LD_RUN_PATH.

If you compile perfparse with that directory in LD_RUN_PATH, you may not need to set that variable at run time.