3 ms·

Maybe it also writes to (network) serial console? Though I suppose maybe some graphics-mode consoles can still be slow. I'm not sure if there's much point usin

• bayindirh 2y ago
  Nope, I'm sure. I install them. It's the normal boot console. Just KMS changes the resolution during the boot. It's very useful for reading long log lines if the server needs close attention for any reason.
  • _flux 2y ago
    [In Linux] You can use 132 character wide text modes as well, so if the boot slowness disturbs you, you could if they work in your system. (Actually also 160 wide, but I wonder if they are as commonly supported..) In addition there's the netconsole, but I guess sometimes the network interface can be down.
    • bayindirh 2y ago
      Thanks for the info. Actually it doesn't. We seldom reboot our servers. We use the lights-out infrastructure provided by servers if needed (the BMC thingy).
• toast0 2y ago
  IPMI serial console has its own buffer, it doesn't usually do flow control all the way to the other side. I have seen serial console slow things down when configured for flow control on the wrong port though. As well as saving a significant portion of boot up time by reducing logging to vga on servers with particularly slow cards (helped everywhere, but we had a new batch of severs that were much slower than the old ones... too long ago for me to remember details though)