Re: Linux Stability & cold.system
Alan Cox (alan@lxorguk.ukuu.org.uk)
Tue, 18 Nov 1997 08:35:37 +0000 (GMT)
> > Anyone else have useful sadistic tricks?
> Plug a null-modem-cable between two serial ports (both config'd as
> 16450 at highest baud-rate) and see whether what you put out one of
> them arrives at the other end. Should generate quite a few
> interrupts.
It generates a passable number, but the tend to stay in step TX/RX. Heavy
networking is better for randomness (or sending form another host). When
testing serial drivers I also run a strobing carrier signal into the
serial drivers to check for races. In the 1.2 era this was quite
effective but 2.0.x seems to have to got the races out