Anna Calveras <[EMAIL PROTECTED]> wrote:
> Now, I'm working with the Open Linux Caldera 1.3 (kernel 2.0.35)
> implementation, and I have detected an abnormal behaviour of TCP over
> the PPP serial link. The
> test environment is a ftp source sending packets through the serial link
>
> (we encapsulate data by PPP), through a NULL modem link. I capture
> traces using the tcpdump.
It looks as if you were using tcpdump on the side which was receiving
the ftp file (147.83.40.121), and that there were some packets dropped
at the ppp level. At a guess, I would say that you have an IDE disk
and that the IDE driver is set to have interrupts masked during IDE
disk I/O operations (hdparm -u0 /dev/hda), and that this is causing
serial overruns. Try using `hdparm -u1 /dev/hda' and see if that
helps.
Paul.
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