On Mon, Jun 19, 2017 at 10:21:14PM -0400, Boris Zbarsky wrote:
> On 6/19/17 6:03 PM, Chris Cooper wrote:
> > If you profile on Mac, now is your chance to speak up. What other profiling 
> > tools do you use that we should be aware of?
> 
> Instruments for targeted profiling, though I mostly do that on my own
> builds, not mozilla.org nightlies.  The sampling tool in Activity Monitor
> for opportunistic "my browser just hung" profiling of my nightly.
> 
> The Gecko profiler doesn't work for the "my browser just hung" case,
> obviously, and is so far a much worse user experience than Instruments for
> normal profiling.  I end up using it mostly for "something was just slow,
> what was it?" profiling, mostly.
> 
> The other thing stripping would affect is debugging.  And yes, I've had to
> attach a debugger to a nightly a few times to figure out something when I
> ran into a problem while browsing.  The symbols we have are not great for
> debugging, but they're a lot better than nothing.

You can actually download the full symbols (and that won't change). Use
https://hg.mozilla.org/users/jwatt_jwatt.org/fetch-symbols/raw-file/27a61dd0bcab/fetch-symbols.py
to get them.

Mike
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