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optimize scheduler WAN performance

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This commit is contained in:
Alex Vanderveen
2026-08-02 16:12:01 -04:00
parent 2828f3fbbe
commit fb252728a5
4 changed files with 459 additions and 67 deletions
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runtime/src/main.cpp
+6 -7
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@@ -3767,16 +3767,15 @@ static void netplay_hold_last_present_tick(void) {
}
}
/* §47: long Replay catch-up — wall-clock gate for a real VRAM present.
* Returns 1 if this guest vblank should fall through to a live present. */
/* §47/§51 Layer 4: long Replay catch-up — wall-clock gate for a real VRAM
* present. Independent of SPAN chunk boundaries (those are bookkeeping, not
* present events). Returns 1 if this guest vblank should fall through. */
static int netplay_replay_catchup_should_live_present(uint32_t remaining) {
static uint64_t s_catchup_present_ms;
uint64_t now = SDL_GetTicks64();
uint32_t period = (uint32_t)(g_frame_period_ms + 0.5);
if (period < 8u)
period = 8u;
if (period > 33u)
period = 33u;
/* ~6–7 Hz: enough to show progress without flashing every resim frame
* (old period≈frame_ms presented nearly every tick when rem>8). */
uint32_t period = 150u;
if (remaining <= 8u)
return 0;
if (s_catchup_present_ms != 0ull && now >= s_catchup_present_ms &&