[PJUG Javamail] Measuring webapp performance

[Merlyn Albery-Speyer]

Hi all,

How are people going about measuring the performance of their webapps?
I've considered a servlet filter to write HTTP request durations to a
log file. What I'd really like is some live comparative measure of
overall performance. I could dive in and come up with yet another
custom solution to this problem, however it seems wiser to poll for
your opinion. Do you know of a suitable existing tool or library?

Cheers,
Merlyn