Improve pulse sleep on busy servers (#4853)#4893
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Zephkek wants to merge 1 commit intomultitheftauto:masterfrom
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Improve pulse sleep on busy servers (#4853)#4893Zephkek wants to merge 1 commit intomultitheftauto:masterfrom
Zephkek wants to merge 1 commit intomultitheftauto:masterfrom
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HandlePulseSleep now returns as soon as the sync thread queues work, instead of sleeping busy_sleep_time at the start of every pulse. Mitigates multitheftauto#4853 (high player count chat lag / packet loss with low CPU): with threadnet, the unconditional sleep could cap DoPulse while m_InResultQueue still grew. Replaced with a short 1ms polling loop that exits on PendingWorkToDo. Idle path unchanged (full idle_sleep_time). server_logic_fps_limit remains the hard cap. busy_sleep_time is no longer used on this path (option still parses). Test plan: code review only; needs 600+ player confirmation.
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Summary
HandlePulseSleepreturns as soon as the sync thread queues work, instead of always sleepingbusy_sleep_timefirst.Motivation (#4853)
With threadnet, the old path slept 20 ms (
busy_sleep_time) before checkingPendingWorkToDo. On busy servers (~600 players), this capped the logic thread whilem_InResultQueuekept growing, causing chat lag/loss with CPU still moderate.Change
Replaced the fixed top-of-pulse sleep + tail loop with a ~1 ms polling loop that returns the moment
PendingWorkToDo()is true.idle_sleep_time.server_logic_fps_limitis still the hard cap.idle_sleep_time = 0is now actually 0 (was clamped to 1).busy_sleep_timeis no longer used here. Option still parses and shows in perf info.Test plan
Code review only (
HandlePulseSleep,PendingWorkToDo,GetSleepIntervals). No 600-player test rig, so this needs operator confirmation that logic FPS isn't pinned near1000 / busy_sleep_timeunder sustained inbound queue.Checklist