The current heap snapshots doesn't provide enough data for comfortable leaks hunting, e.g. it's impossible to identify the exact object that retains too much memory, or point out object instances that were created since the last snapshot taken, also it's impossible to determine, what are the names of the properties that hold an object. I'm working on the new version of heap profiler that provides those richer capabilities. We create a detailed snapshot of JS VM heap containing each individual object, and provide processing tools in Inspector. The first commit was this one, providing JSON transport for heap profiles: https://bugs.webkit.org/show_bug.cgi?id=49974
The next one: https://bugs.webkit.org/show_bug.cgi?id=52624
The next one: https://bugs.webkit.org/show_bug.cgi?id=53173
Next one: https://bugs.webkit.org/show_bug.cgi?id=53606
Next: https://bugs.webkit.org/show_bug.cgi?id=54385
Next: https://bugs.webkit.org/show_bug.cgi?id=55563
In this issue I have enabled detailed heap snapshots by default: https://bugs.webkit.org/show_bug.cgi?id=60286 Closing the bug.