http://people.mozilla.com/~bgirard/cleopatra/?report=88070caedf63c1660c7080a938420c00e4f363e3 This profile shows a fair amount of time being spent in analyzeBytecode. In the onfocus handler of gmail. If I had to guess it seems like we're probably doing more work analyzing than we are running.

We need to analyzeBytecode every script when it first runs, so that we can pick up type information about the results of each property access. In places where scripts get cloned / run across many globals then, yeah, analyzing takes longer than running. This restriction will be removed by bug 804676.

Now that the dependency is resolved, could someone work on this bug please ? opening a new gmail tab still hangs for about a second. Profile : http://people.mozilla.com/~bgirard/cleopatra/#report=2b8b0599fa16ca9740d8a8f87e72006d329ffcc8

(In reply to mayankleoboy1 from comment #2) > Now that the dependency is resolved, could someone work on this bug please ? > opening a new gmail tab still hangs for about a second. > > Profile : > http://people.mozilla.com/~bgirard/cleopatra/ > #report=2b8b0599fa16ca9740d8a8f87e72006d329ffcc8 So that profile shows a bunch of time spent in a bunch of places. There's time spent in js execution and reflow etc.