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Archive for August, 2013

This is a long post.  Here’s a summary. Valgrind unwinds CFI typically 30 times faster than Breakpad.  Bad though that sounds, it’s really encouraging.  If we can get even half that speedup — that is, 15 times faster than at present — CFI/EXIDX unwinding in SPS will be a lot more useful than it currently […]

SPS profiler backend news, 12 August 2013

In short: more adaptation to real-use cases, and more unwind speedups. Benoit redid time-unit measurements so as to support profiling with sampling intervals of less than one millisecond.  This will help profiling graphics and animation code (820048). Gijs Kruitbosch made it possible to control the size of the profiler’s circular buffer using the MOZ_PROFILER_ENTRIES environment […]