8000Hz (8K) USB Polling Rate Architecture and CPU Interrupt Overhead: Edge Cases, Failure Modes, and Root-Cause Debugging

Owen Nelson · 2026-10-26T07:17:18+00:00

Accueil &rsaquo; Forums &rsaquo; Global Gamer Lounge & Matchmaking &rsaquo; Introduce Yourself & Setup Showcases &rsaquo; 8000Hz (8K) USB Polling Rate Architecture and CPU Interrupt Overhead: Edge Cases, Failure Modes, and Root-Cause Debugging This topic has 0 replies, 1 voice, and was last updated 2 hours, 33 minutes ago by Owen Nelson. Viewing 1 post (of 1 total) Author Posts October 26, 2026 at 7:17 am #126930 Owen NelsonMember Running an 8000Hz setup on a Ryzen 7000 and I’m seeing DPC latency spike past 1500µs during burst traffic even with the mouse on a dedicated USB controller. At 8K you’re pushing 8000 interrupts/sec per device, so I’m trying to isolate whether the real bottleneck is xHCI’s transfer handling or "Lag isn’t an excuse, but it definitely wasn’t my fault." Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In

This topic has 0 replies, 1 voice, and was last updated 2 hours, 33 minutes ago by Owen Nelson.

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October 26, 2026 at 7:17 am #126930

Owen Nelson
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Running an 8000Hz setup on a Ryzen 7000 and I’m seeing DPC latency spike past 1500µs during burst traffic even with the mouse on a dedicated USB controller. At 8K you’re pushing 8000 interrupts/sec per device, so I’m trying to isolate whether the real bottleneck is xHCI’s transfer handling or

"Lag isn’t an excuse, but it definitely wasn’t my fault."
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8000Hz (8K) USB Polling Rate Architecture and CPU Interrupt Overhead: Edge Cases, Failure Modes, and Root-Cause Debugging

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