Trevor, I was able to try this out. Did some small tweaks to your script: https://gist.github.com/arunoda/09a7f154a130e3d04c89/revisions
--- Arunoda Susiripala I curate Meteor Weekly - Check it out! <http://meteorhacks.com/meteor-weekly/?utm_source=email-footer&utm_medium=email&utm_campaign=meteorweekly> On Tue, Jun 17, 2014 at 11:50 AM, Arunoda Susiripala < [email protected]> wrote: > > On Tue, Jun 17, 2014 at 11:00 AM, Trevor Norris <[email protected]> > wrote: > >> > Does it show js stack traces? >> >> Yes. perf has JIT support. When the Node runtime flag is enabled the app >> will produce a .map file which contains the memory address and instruction >> information necessary to fill in the blanks. >> > > That's nice. I'll give this a try today. > > >> >> > Is it possibly to apply this for a already running app? >> >> AFAIK the application must be started with the correct option. Though >> there may be an API that allows the user to toggle this functionality. If >> not, then it would be useful to create a ticket upstream to support it. >> > > I'll check. Anyway, it's okay to run with an option. > > >> >> > Without using perf record ? >> >> This one confuses me. perf record is what allows you to collect the data >> necessary to create the flame graph. Unless you use dtrace. Those are the >> only two options I know of so far. >> >> This is what I asked: is it possible to ask perf to record by simply > giving a PID rather start the node app as follow. > > *perf record -i -g -e cycles:u -- ~/sources/node/node --perf-basic-prof > script.js* > > > -- >> Job board: http://jobs.nodejs.org/ >> New group rules: >> https://gist.github.com/othiym23/9886289#file-moderation-policy-md >> Old group rules: >> https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines >> --- >> You received this message because you are subscribed to the Google Groups >> "nodejs" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/nodejs/01d7745b-a845-4205-ad24-4e3101b1f42d%40googlegroups.com >> . >> For more options, visit https://groups.google.com/d/optout. >> > > -- Job board: http://jobs.nodejs.org/ New group rules: https://gist.github.com/othiym23/9886289#file-moderation-policy-md Old group rules: https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines --- You received this message because you are subscribed to the Google Groups "nodejs" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/nodejs/CAJzNrTGbm-y%2BUR4PqK5W5HSRJDztqm%3DrLfa0uFgj88%2B40NuJtg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
