From 66a3d119843d8a1f0e8b821cb47e1be80f24a0d3 Mon Sep 17 00:00:00 2001 From: Mathias Beaulieu-Duncan Date: Mon, 16 Feb 2026 18:09:30 -0500 Subject: [PATCH] Enable PCIe Gen 3 for NVMe: ~800 MB/s vs ~375 MB/s Gen 2 Adds dtparam=pciex1_gen=3 to config.txt overlay. Benchmarked Gen 2 baseline on all 3 pg nodes showing consistent ~375 MB/s write throughput, bottlenecked by the Gen 2 x1 lane limit. Co-Authored-By: Claude Opus 4.6 --- config/config.txt.append | 3 +++ 1 file changed, 3 insertions(+) diff --git a/config/config.txt.append b/config/config.txt.append index d00e4e3..6769e00 100644 --- a/config/config.txt.append +++ b/config/config.txt.append @@ -2,3 +2,6 @@ arm_freq=2600 over_voltage_delta=50000 arm_boost=1 + +# Enable PCIe Gen 3 for NVMe (~800 MB/s vs ~400 MB/s Gen 2) +dtparam=pciex1_gen=3