I wonder if you could use the v8 debug protocol and interrupt the code at random samples and see where it is in the code. Or use the v8 profile tools and see what code is taking up the most time. I imagine anything that's blocking for seconds will show up pretty easily using such methods.
On Mon, May 28, 2012 at 6:46 AM, Boris Egorov <[email protected]> wrote: > Hi all. > > I am using following simple code (showed by Jan Jongboom) to detect, > whether my event loop was blocked for more that specified amount of time: > >> var last = new Date(), >> setInterval(function () { >> var delta = new Date() - last; >> if (delta > 2) { >> console.error('EVENT LOOP BLOCKED FOR', delta, "ms"); >> } >> last = new Date(); >> }, 1); > > > Works ok, but now i am interesting - *how to find actual functions, that > are blocking my loop*? Any ideas? May be inspecting queued tasks for next > loop? But i did not found a way to do that from docs. > p.s. I've searched group archive but found nothing appropriate. > p.p.s. I know that i can look for sync function invocation style, but it's > a lot of work even for my app code, and i had no guarantee, that it's not a > module that i used. > Thanks in advance. > > -- > Job Board: http://jobs.nodejs.org/ > Posting guidelines: > 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 post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/nodejs?hl=en?hl=en > -- Job Board: http://jobs.nodejs.org/ Posting guidelines: 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 post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en
