Henrik Muehe
8e3b7a29e5
Measured on onefinity.local (Pi 3, Raspbian Stretch, bbctrl 1.6.7). Before -> after: bbctrl listen boot+20.6s -> boot+12.4s (-8.2s) host -> /api/config/load 28.2s -> 22.5s (-5.7s) The 4 changes (each independently revertable): 1. scripts/bbserial-rebind.service: do the bbserial unbind + reload in a dedicated unit ordered Before=bbctrl.service, instead of in rc.local AFTER bbctrl is already listening on the serial port. Eliminates a full bbctrl restart mid-boot. 2. scripts/bbctrl.service: drop "After=network.target". bbctrl talks to the AVR on a local serial port and to the LCD on I2C; it does not need DHCP / network-online to come up. Also adds explicit ordering after the new bbserial-rebind unit. 3. scripts/rc.local.fast: trimmed rc.local that no longer touches bbserial and backgrounds 'startx' so chromium launches in parallel with bbctrl rather than after rc.local finishes. 4. src/py/bbctrl/Planner.py: lazy-import camotics.gplan. Costs ~130ms on cold cache, deferred from import-time to ctrl.mach init. 5. (bonus) src/py/bbctrl/Log.py: tolerate FileNotFoundError in _rotate(). The improved boot path exposed a pre-existing log rotator bug that crashed bbctrl on first start when bbctrl.log.16 was missing.
41 lines
1.3 KiB
Bash
41 lines
1.3 KiB
Bash
#!/bin/bash
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# rc.local for the OneFinity Pi, "fast" variant.
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#
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# What changed vs. scripts/rc.local:
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# - bbserial unbind/rebind moved to bbserial-rebind.service (runs
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# once, before bbctrl, instead of after bbctrl is already
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# listening on the serial port).
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# - startx moved to kiosk.service so chromium starts in parallel
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# with bbctrl rather than blocking on rc.local.
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# - rc.local no longer keeps the Pi in 'starting' state forever,
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# which fixes systemd-analyze.
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set -e
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# Mount /boot read only
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mount -o remount,ro /boot 2>/dev/null || true
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# Set SPI GPIO mode
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gpio mode 27 alt3 || true
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# Create browser memory limited cgroup
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if [ -d /sys/fs/cgroup/memory ]; then
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CGROUP=/sys/fs/cgroup/memory/chrome
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[ -d "$CGROUP" ] || mkdir -p "$CGROUP"
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chown -R pi:pi "$CGROUP"
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echo 650000000 > "$CGROUP/memory.soft_limit_in_bytes"
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echo 750000000 > "$CGROUP/memory.limit_in_bytes"
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fi
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# Stop boot splash; harmless if plymouth already gone.
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plymouth quit 2>/dev/null || true
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# Start X (chromium kiosk) in the background so rc.local can exit and
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# late-boot units (bbctrl logrotate, etc.) don't block on it. Output
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# is redirected so the journal doesn't fill up with X warnings.
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cd /home/pi
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nohup sudo -u pi startx >/var/log/onefin-x.log 2>&1 &
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disown
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exit 0
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