Hi,
I was wondering if it is possible to install or use any online service to measure your website's performance? I've seen many just checking the download speed of images, external files etc. But is it possible to meassure how long asp/php code takes to execute?
I have a site running a bit slowly, and it would be very nice with some app/service guiding where to optimize.
you could profile the code. There are several questions detailing available profilers for many languages. .Net or Php for example. also there are some which deal with asp specifcally, like this one, using a free profiler I believe.
Check out AlertGrid, basically, it is an app tracing app. You can use it to track ANY metrics or statistics but you have to collect them on your own. It provides alerting (alert rule editor) and data visualisation, it's not a classical profiler tool, but still you may find it useful.