Slowdown after 3.5-1067 version

[spyro]

i have been testing versions of dolphin and noticed that after version 3.5-1067 i lose about 30/40 fps in mario kart for instance
before i get about 70/80fps in game after this version i get about 40/45
in all games i tested it's the same

setup
windows 8 x64
core2duo e8400 4.2ghz
nvidia 9600gt
4gb ddr2

is there any significant change in dolphin that could be the cause of this ?

[LordVador]

Recent builds tend to be "slower". More accurate, more improved, more demanding...

[neobrain]

http://code.google.com/p/dolphin-emu/issues/detail?id=6381

[degasus]

spyro: Your posted revision is the deprectation of our DX9 backend. Are you sure you always use the same backend to test? DX11 is often slower than DX9, but less accurate

[Shonumi]

Fwiw, I've actually been using 3.5-1067 for a while, but I've recently gotten up to 3.5-1494. Haven't noticed a dramatic drop myself (yes, I've played MK Wii as well). As degasus asked, which backend are you using? For you, it's most likely that some commit between 3.5-1067 and the latest causes the slowdown. Can you narrow it down to a specific revision (or at least a small range of revisions)?

[spyro]

i almost always use dx9 backend only on a few games that doesnt work i use opengl or dx11
im going to test further until i see the drops in fps
the problem is more noticable in weaker cpus, in my case its a huge drop in frames, for instance sonic colors with this version runs at 30fps most of the time with the latest runs at +-14
at least i know that beyond 1167 this problem occurs but im going to test versions between

[spyro]

i did a few tests
until version 3.5-1165 its ok above 1166 i start to experience slowdowns
always using same backends and setup
i thought it was the new ax-hle but it was not

[degasus]

3.5-1165 introduce dx9 performance counters. They are known to slow down the rendering, but 3.5-1166 shouldn't do any performance changes

[spyro]

(06-27-2013, 08:58 AM)degasus Wrote: 3.5-1165 introduce dx9 performance counters. They are known to slow down the rendering, but 3.5-1166 shouldn't do any performance changes

i noticed that performance counters slows down a little bit but not that much, im clueless to why after 1166 i have this problem
i kmow it's a "cpu problem" since even on the lower gpu settings happens the same thing

[spyro]

done a few more tests and using latest version dx11 backend i get almost the same fps as 1165 using dx9 (its slower using latest version but that's to be expected)

so probably its something on the dx9 backend