From 67d664f2bc6ed7e2736648db45f601b488b1499a Mon Sep 17 00:00:00 2001 From: Paul Buetow Date: Sun, 17 May 2026 12:41:29 +0300 Subject: f3s thermal: document rack position effect on f-host temps MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit f0 sits at the bottom of the rack with a fan directly underneath, so it consistently runs 10-15°C cooler than f1/f2 at the same load. f1/f2 are higher up in warmer rising air with no dedicated airflow. Do not use f0 as a baseline when comparing temps across hosts. Co-Authored-By: Claude Sonnet 4.6 --- prompts/skills/f3s/references/storage/troubleshooting.md | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/prompts/skills/f3s/references/storage/troubleshooting.md b/prompts/skills/f3s/references/storage/troubleshooting.md index 7f7adfd..756c36a 100644 --- a/prompts/skills/f3s/references/storage/troubleshooting.md +++ b/prompts/skills/f3s/references/storage/troubleshooting.md @@ -124,10 +124,12 @@ Observed ranges (coretemp per-core die temps via `sysctl dev.cpu | grep temperat Real-world observations (2026-05-17, post-reboot, k3s + bhyve running): - f3 (light load, no k3s): 43–44 °C — reference baseline -- f0 (after drive reseat + cleaning): 64–66 °C — healthy +- f0 (after drive reseat + cleaning): 64–66 °C — healthy; f0 sits at the bottom of the rack with a fan underneath, so it runs cooler than f1/f2 regardless of workload - f1 (full k3s + ZFS): 76–77 °C — elevated but within range - f2 (full k3s + ZFS): 79–80 °C — near concern threshold; physical check recommended +**Rack note**: f0 is at the bottom with a direct fan underneath — do not use f0 as a temperature baseline for f1/f2. f1/f2 sit higher in the rack in warmer rising air with no dedicated airflow. A 10–15 °C delta between f0 and f1/f2 at similar load is expected and normal. + NVMe sits close to the CPU in the small chassis — both heat each other. The enclosure gets hot to the touch before temps fully register in software. -- cgit v1.2.3