nx2: notes 138-139 (async presentation retested, buffer collector on its own size)

1 files changed, 2 insertions, 0 deletions

diff --git a/NX2_NOTES.md b/NX2_NOTES.md
index 98d46d9e78..c5856ab8e3 100644
--- a/NX2_NOTES.md
+++ b/NX2_NOTES.md
@@ -199,6 +199,8 @@ With the patched decoder, games 1/3/4 only leave ~60-110 rare SIMD encodings in
 | 135 | ~6 million 3D register writes a second, ~60% writing the value the register already holds (mostly macro memo replays) | each went through shadow RAM, dirty flags (re-checked at the next draw) and the method switch | state registers (not in execution_mask) written with their value are dropped after shadow RAM processing (f265911, `EDEN_NX2_SKIP_SAME=0` off): macro calls 169 ns instead of 185, draw setup 5.80 us instead of 5.95. For non-executable registers ProcessMethodCall is skipped as well (it acts only on executable ones) |
 | 136 | native compute: ~20% of the GPU thread under KeplerCompute::ProcessNativeMethod (dispatches 8%, inline QMD/uploads 4%) | its compute macros replay ~64 QMD register writes per dispatch, each through the macro/QMD/upload/semaphore checks | plain native registers stored directly from CallMethod (f7a82b2): its own time 2.2% -> 1.6% |
 | 137 | 2D blits (Fermi2D) 3.6% on heavy courses | mip chains 64x64..4x1 copied near the GPU-only regions; neither image is GPU-written, so the software blitter (un)swizzles them on the CPU | open (expected for small copies; many of them) |
+| 138 | `async_presentation=true` crashed 4 of 8 runs ~26 s in (row 118) | retested after the fence-operation race (row 118) and translation cache race (row 125) were fixed: 0 crashes in 4 runs, screenshots correct | on in the dev config (`async_presentation\default=false`, `async_presentation=true`); every later run is a crash test for it |
+| 139 | buffer collector: up to 64 buffers evicted every frame, GPU-written ones downloaded with a GPU wait (~5% of the GPU thread on 8 GB) | it compared the whole device's use (textures, ~6.8 GB) with thresholds from the device size (6.14 GiB reported): aggressive every frame, while the buffers were ~200 MiB | Switch 2 titles collect on the buffers' own size (1 GiB, aggressive 2 GiB) and keep GPU-written buffers outside aggressive mode (c4eaa4b): 0%, presents no longer blocked on those courses (22-26 ms in t23) |
 
 Run settings used (in `build/bin/user/config/sdl2-config.ini`): `memory_layout_mode=4`
 (12 GB). Debug knobs: `EDEN_NX2_TC_EXPECTED_MIB` / `EDEN_NX2_TC_CRITICAL_MIB` (collector thresholds),