Ryan Malloy
6881489bf6
What the Raspberry Pi time-server guides get wrong on a Pi 4, with the measurements. The headline artifact is a four-line pps-gpio patch: PREEMPT_RT force-threads IRQ handlers, and pps-gpio takes its timestamp inside its handler, so the realtime kernel puts a scheduler between the electrical edge and the clock. IRQF_NO_THREAD takes RMS offset from 2468 ns to 199 ns. - kernel/ the patch - dashboard/ live status page (position hidden by default) - docs-site/ the write-up (Astro/Starlight, brass, no tutorial section)
30 lines
687 B
TOML
30 lines
687 B
TOML
[project]
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name = "gpsntp-dashboard"
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version = "2026.07.12"
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description = "Live status dashboard for a GPS/PPS-disciplined chrony Stratum 1 time server"
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readme = "README.md"
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requires-python = ">=3.11"
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authors = [{name = "Ryan Malloy", email = "ryan@supported.systems"}]
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license = {text = "MIT"}
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dependencies = [
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"fastapi>=0.115",
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"uvicorn[standard]>=0.34",
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]
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[project.scripts]
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gpsntp-dashboard = "gpsntp_dashboard.main:run"
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[build-system]
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requires = ["hatchling"]
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build-backend = "hatchling.build"
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[tool.hatch.build.targets.wheel]
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packages = ["src/gpsntp_dashboard"]
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[tool.ruff]
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line-length = 100
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target-version = "py311"
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[tool.ruff.lint]
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select = ["E", "F", "I", "UP", "B"]
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