> > > coreboot-4.5-1079-g613350897d Fri Feb 24 14:59:42 UTC 2017 romstage > > starting... > > Julius, do you have any measurements, how much time printing 100 > characters over the serial console would take? >
Back of the envelope calculation for normal 115200 baud says 1000ms * 100 chars * 9 bits per char (with parity) / 115200 bps = 8ms Certainly not the end of the world, but I just don't like unnecessary inefficiency even if it's small. I also feel like it should be a reasonable use case to say "I want *only* warnings/errors" (e.g. so you can pipe them directly into some firmware error log or something), but maybe that's just me. > Also, does that really matter for production systems? What log level > are they normally shipped with? > If you're talking about Chrome OS production systems, we just set BIOS_SPEW but disable the UART, so from that point I don't care either way.
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