Hi,

Is it possible to change the buffer sizes of the /dev/ttySx serial ports? I've looked at the man pages for ioctl() but it doesn't seem to achieve what I want.

Background: I have two Linux PCs, a null-modem cable and an RS232 LED Line Monitor. I'd like to programmatically modify the kernel buffer size to see the effect on hardware flow control. My present understanding is that there will be a small (16 byte?) hardware FIFO on the serial card and then, presumably, a larger (a few kilobyte?) software buffer in the Linux kernel. If at all possible I'd like to experiment with changing the size of this software buffer.

Thanks in advance...