atst Reporter
	Description • 8 years ago

User Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0
Build ID: 20150817061040

Steps to reproduce:

need to know if latest nightly builds supports SSE/SSE2 and AVX which still works with e10. multi process is set to 16 on a quad core i7 cpu 3770k, e10 enabled. no way to tell if cpu using sse2/avx


Actual results:

my firefox session have over several hundred tabs. upon restoring session only single thread being used for around 15-20 seconds before multi process kicks in, when multi process kicks in only loads for few seconds on all cores, then back down to 1 thread again for another 20 seconds finally finish loading everything.


Expected results:

need to support SSE2/AVX for better firefox performance with multi process, beginning to end all multi threaded take full advantage of the cpu cores.

	Jeff Muizelaar [:jrmuizel]
	Comment 1 • 8 years ago

Firefox already uses SSE2 and AVX in many places. Without a specific suggestion this bug isn't really actionable.

	atst Reporter
	Comment 2 • 8 years ago

then is there support for avx2 and tsx? and also avx512 when it comes with newer CPU.

	Jeff Muizelaar [:jrmuizel]
	Comment 3 • 8 years ago

(In reply to unityole from comment #2)
> then is there support for avx2 and tsx? 

Yes

> and also avx512 when it comes with
> newer CPU.

We'll evaluate the usefulness of this when it comes out.