On 01/21/2013 01:37 PM, Brian Hackett wrote:
need in the future (e.g. parallel arrays). Any configuration in which a threadsafe build is noticeably slower than a non-threadsafe build indicates a bug in the engine, and what we need right now is a better handle on the problem rather than a workaround.
If it's any use, valgrind's callgrind tool can profile global bus events (x86 LOCK, CAS, arm LL/SC) so it's at least possible to see if/where the threadsafe config uses them a lot. If necessary it'd be trivial to backport this to the simpler profiler (cachegrind) that njn used to good effect when tuning TM a couple of years back. J _______________________________________________ dev-tech-js-engine-internals mailing list [email protected] https://lists.mozilla.org/listinfo/dev-tech-js-engine-internals
