jsPerformance.pl is an adaptation by mazielobo@netscape.com of the JS Engine test driver (jsDriver.pl by rginda@netscape.com). Whereas jsDriver.pl runs qualitative tests with pass-fail output, jsPerformance.pl runs performance tests, with timing output. The driver outputs results files as peers to the test driver, and like jsDriver.pl, expects tests to be in a directory structure two levels deep. Additionally, jsPerformance.pl can post to a CGI script for logging, e.g. http://lxr.mozilla.org/mozilla/source/webtools/graph/collect.cgi. For convenience, we have included collect.cgi in mozilla/js/perf/. You can use collect.cgi locally to log performance results over time from one machine. If installed on a web server, many different machines can log results to it. Note that collect.cgi depends on CGI modules available at http://stein.cshl.org/WWW/software/CGI::modules/. Note: the call to send_results_to_server() is currently commented out. If you want to post results to collect.cgi, uncomment it as appropriate.