[PATCH v2 0/5] minitty: a minimal TTY layer alternative for embedded systems
stuartl at longlandclan.id.au
Sun Apr 2 15:44:04 PDT 2017
On 03/04/17 07:41, Nicolas Pitre wrote:
>> No PTYs seems like a big limitation. This means no sshd?
> Again, my ultimate system target is in the sub-megabyte of RAM. I
> really doubt you'll be able to fit an SSH server in there even if PTYs
> were supported, unless sshd (or dropbear) can be made really tiny.
> Otherwise you most probably have sufficient resources to run the regular
> TTY code.
Are we talking small microcontrollers here? The smallest machine in
terms of RAM I ever recall running Linux on was a 386SX/25 MHz with 4MB
RAM, and that had a MMU.
I recall Slackware requiring that you booted with a mounted floppy (no
ramdisk) and possibly even required that you had a second floppy drive
formatted as swap so you'd be able to get through the install without
oomkiller knocking on your door.
The same machine could also "run" Windows 95. When I say "run", it was
more like a slow crawl. Bull sharks washed onto land by flood waters
Sub-megabyte system support is a noble goal, but I'm wondering how
practical such systems would be, and whether an embedded real-time
kernel might be a better choice than Linux on such systems.
Stuart Longland (aka Redhatter, VK4MSL)
I haven't lost my mind...
...it's backed up on a tape somewhere.
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