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Christian Svensson edited this page Apr 8, 2019
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Welcome to the u-bmc wiki!
Things we know add seconds when booting and what can be done.
Verified boot adds about 8 seconds in simulator before the real kernel has been kexec'd.
You can tweak what compression Ubifs is created to use. LZO and Zlib is what linux supports, we're using Zlib right now as it buys about 10% space. At 2019-04-08 the measurement was LZO at 13.35 MiB and Zlib at 12.29 MiB (46% vs 42% free).
It adds 1-2 seconds to the boot time though in the simulator (but the simulator is pretty slow) Loader stage: 6.5 sec (LZO) - > 7.6 sec (Zlib)