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/CAJzNrTELLK1RyGWrCUR_dv8sZCKX4%3Duxxz0iFnJpGbVSBW8K-w%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
