Comment # 35
on bug 82050
from Andy Furniss
(In reply to comment #33) > (In reply to comment #28) > > > I submitted the change reverting the behaviour of PIPE_USAGE_STREAM for > > > review, but it's strange: I couldn't notice any significant difference in > > > stutter in Valley regardless of any of these changes. > > Also, according to > GALLIUM_HUD=requested-VRAM+VRAM-usage,requested-GTT+GTT-usage, Valley only > seems to allocate about 10-20 MB for streaming BOs, so I'm not sure why > putting them in VRAM or not makes such a big difference for you. > > > > > BTW, what CPU are you using? > > > > It's an AMD Phenom II x4 965be. > > I assume the chipset for that doesn't support PCIe 3.0, does it? I wonder if > maybe streaming BOs should be in VRAM with PCIe 3.0 but not with PCIe 2.0. Yea I am PCIE 2.0. Other settings which may or may not be relavent - vblank_mode=0, swapbufferswait off, 1920x1080 fullscreen, quality high, antialiasing off. I tried with hud and see 10-20MB requested with the stream change reverted and 8kb with it. The fps counter on hud does show the pauses - though even the good case looks bad on that - but the biggest pauses it shows are between scenes when the screen has faded to black, I guess you kind of expect something to be loading then. I'll upload a couple of screens.
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