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.
22 lines
665 B
Desktop File
22 lines
665 B
Desktop File
[Unit]
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Description=Unbind ttyAMA0 from pl011 and reload bbserial
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DefaultDependencies=no
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After=systemd-modules-load.service local-fs.target
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Before=bbctrl.service
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ConditionPathExists=/sys/bus/amba/drivers/uart-pl011
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[Service]
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Type=oneshot
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RemainAfterExit=yes
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# Tolerate the device already being bound elsewhere or the module
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# already being loaded — the goal is the end state (bbserial owns
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# ttyAMA0), not running the steps.
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ExecStart=/bin/sh -c '\
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echo 3f201000.serial > /sys/bus/amba/drivers/uart-pl011/unbind 2>/dev/null || true; \
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/sbin/modprobe -r bbserial 2>/dev/null || true; \
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/sbin/modprobe bbserial \
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'
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[Install]
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WantedBy=multi-user.target
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