On Thu, Apr 4, 2013 at 8:07 PM, Justin Collum <[email protected]> wrote: > I'm using https://github.com/bnoordhuis/node-profiler to do some profiling. > I've got a chunk of code that pulls in json from a file and performs some > logic on the objects that get loaded. There are 1000s of objects and a > dependency graph, so it takes a good long while. This is a stress test. The > code looks like: > >> var profiler = require('profiler'); >> profiler.resume(); >> ce.buildDepGraph(); >> profiler.pause(); > > > OK so ce.buildDepGraph is a function that loops the objects from the json > and builds a dep graph. It all runs fine, but when I run v8.log through the > linux-tick-processor I get hundreds of lines that look like: > > line 947: unknown code state: undefined > > and hundreds more like: > > Code move event for unknown code: 0x3254c6e0 > > At the end, I get this: > > > Statistical profiling result from v8.log, (9259 ticks, 9259 unaccounted, 0 > excluded). > > [Unknown]: > ticks total nonlib name > 9259 100.0% > > [Shared libraries]: > ticks total nonlib name > > [JavaScript]: > ticks total nonlib name > > [C++]: > ticks total nonlib name > > [GC]: > ticks total nonlib name > 0 0.0% > > [Bottom up (heavy) profile]: > Note: percentage shows a share of a particular caller in the total > amount of its parent calls. > Callers occupying less than 2.0% are not shown. > > ticks parent name > > > Well blech, that's not even remotely useful. > > I did this profiling without node-profiler and got the same results. Do I > have to put the actual buildDepGraph code into this test to get it to > profile correctly?
Does the linux-tick-processor match the version of node / V8 that generated the log file? Are you using the cluster module? If events from multiple processes end up in a single log file, the tick processor output will be bogus. Node.js master understands --logfile=%p.log, where %p is replaced with the process ID. -- -- 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 --- 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]. For more options, visit https://groups.google.com/groups/opt_out.
