On 12 August 2011 16:09, Julian Edwards <julian.edwa...@canonical.com> wrote: > Dear hackers > > I need to add storm statement tracing to one of the scripts we've developed > for Derived Distros so I can see if there's a performance improvement to be > made. I figured it would be a simple case of adding these three lines to the > script (as advised by Rob): > > from canonical.launchpad.webapp.adapter import LaunchpadStatementTracer > from storm.tracer import install_tracer > install_tracer(LaunchpadStatementTracer())
This tracer is installed by the act of importing its module, so the install_tracer() call is a no-op. Next, you'll need to use set_request_started() before LaunchpadStatementTracer will start recording, then you'll need to trigger an oops before calling clear_request_started() at the end of the interesting bit (or just letting the script end). At least, this is how checkwatches does it... which may or may not be a good recommendation ;) See the WorkingBase class in lib/lp/bugs/scripts/checkwatches/base.py for some convenience stuff that should be easy to borrow. Gavin. _______________________________________________ Mailing list: https://launchpad.net/~launchpad-dev Post to : launchpad-dev@lists.launchpad.net Unsubscribe : https://launchpad.net/~launchpad-dev More help : https://help.launchpad.net/ListHelp
