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Count the low-latency driver's sleep as pacing on whichever thread acquires, as the other acquire waits are counted since the pacing timing changed: vk_lowlat.c frame_begin runs on the acquiring thread, which need not be the one that presents, and perf_end dropped a wait made there.

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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chrg6
2026-11-13 18:46:49 -05:00
parent a0fd6edc48
commit 52d996d4aa
1 changed files with 1 additions and 1 deletions
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runtime/vk_lowlat.c
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@@ -267,7 +267,7 @@ static void frame_begin(uint64_t id, int at_input) {
uint64_t p0 = perf_begin();
if (L.kind == LL_NV) nv_sleep();
else STORE(&L.staged[id % RING], id), amd_stage(VK_ANTI_LAG_STAGE_INPUT_AMD, id);
perf_end(PERF_PACE, p0);
perf_end_any(PERF_PACE, p0); // the acquiring thread may not be the one that presents
kern_core_back(&away);
__atomic_add_fetch(&L.sleep_ns, kern_now_ns() - t0, __ATOMIC_RELAXED);
__atomic_add_fetch(&L.n_sleep, 1, __ATOMIC_RELAXED);