Vincent wrote:

BTW if you have setup some tools and have had successes with them to monitor xwiki instances, it would be great if you could add some doc about them at  http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Monitoring

Thanks for the pointers. These sound like useful tools, although I think to cover the situation I encountered (web services looked up) I probably need to get more familiar with the logs, make sure they collect the right stuff, and have a command-line tool to filter it. But yes, I shall certainly contribute any experience I glean back into the wiki.