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Diffstat (limited to 'NX2_NOTES.md')
| -rw-r--r-- | NX2_NOTES.md | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/NX2_NOTES.md b/NX2_NOTES.md index b23f4195bb..7171982b85 100644 --- a/NX2_NOTES.md +++ b/NX2_NOTES.md @@ -172,6 +172,9 @@ With the patched decoder, games 1/3/4 only leave ~60-110 rare SIMD encodings in | 114 | texture churn: 1,400-2,600 textures deleted and recreated per 600 frames, one purge of 4,300 | ~38% of device memory was empty space in 256 MiB VMA blocks; usage came from the driver, so evictions did not lower it | 64 MiB blocks and usage minus VMA block slack (7b0ff0b): 0-224 per 600 frames, 6.24 of 6.97 GB used | | 115 | main core: ~12% slow-path reads of GPU-tracked pages, GPU thread and CPU fighting over the caches' mutex | `use_reactive_flushing` (on by default on desktop) protects tracked pages against reads too | off in the test config: the slow reads are gone, no visual differences seen in the attract loop. Kernel lock spins before sleeping (5c99031): ~20-25% less time blocked | | 116 | macro interpreter is ~11-13% of the GPU thread | operand fetch is not the cost: a slot-based rewrite matched the old interpreter on 200,000 recorded calls (`EDEN_NX2_MME_RECORD`, `C:\dev\nx2work\mme_test`) but was no faster | open: needs a JIT or pre-built handlers | +| 117 | macro calls: ~1,000,000 a second, 7 instructions each, 96% exact repeats | the per-call interpreter cost was the time, not the instructions | memo of calls that depend only on their parameters and the data RAM words they read (1cd4a3c, b75fdf8, c28ea9a for compute macros): 97% replayed, verified on 200,000 recorded calls | +| 118 | crashes ~26 s in (fencing thread walking a corrupt operation list; query cache Barriers; Vulkan worker SubmitExecution) | `async_presentation=true` (config): 4 crashes in 8 runs with it, 0 in 6 without; a race between the present thread and the Vulkan scheduler | keep it off (test build 3b). The fence manager's SyncOperation also appended to a list SignalFence moved from another thread: own lock now | +| 119 | (tester, RTX 4070 SUPER) 50 MB log; textures evicted with 3 GB VRAM unused | nx2:vi2 104/105 called ~75 times a second through the logging auto stub; collector thresholds from Eden's ~7 GB device memory cap | quiet stubs (649fb56); thresholds from the driver budget (49225dd) | 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), |