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SubjectRe: more than 2048 unix98 ptys?
Richard B. Johnson <> [03/02/19 14:38]:
> Read the comments in .../linux-n.n/include/linux/tty.h and then
> modify NR_PTYS accordingly. You need to add more majors as well.

I was hoping for something like the 32 bit dev_t that I've seen talked
about (but know very little about). I need 16 or 32K ptys. Getting that
many majors does not appear possible.

> Note that ptys are used for interactive terminals, you don't need
> one for every network connection. You may be adding something that
> you don't need and wasting kernel space.

It's for a PPP test client and we need a pty per session.

OK, but I don't want anyone thinking we're robosexuals. - Bender
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