On Mon, 28 Dec 1998, joe wrote:
> I'm new to Linux, hving a small problem...Upon connection to
> my ISP, when it does connect, it is severely slow...Thats when it does
> conn., ive been setting it up through X-Windows... I was suggested to
> get irqtune, will this solve my speed issue?...
It might help, but there are other things to watch out for.
1. Make sure that each serial port has a unique IRQ. Unlike DOS/Windows,
sharing IRQs for COM1/3 and COM2/4 is not allowed. This is a frequent
cause of problems for new users coming over from Windows. See the
Serial-HOWTO.
2. Set your port speed to the maximum allowed. This is very site
dependent, but most systems these days have high speed UARTS and hardware
handshaking on the modem line. If so, you should use a speed of 4x the
maximum bps rate of the modem (115200 bps for a 28.8 modem, 230400 bps for
a 56K modem). Otherwise, the highest rate your UART supports. Again, see
the Serial-HOWTO.
3. With hardware handshaking, you can usually get away with 'asyncmap 0'
in your pppd options. This eliminates escaping of control characters.
See the pppd man page.
4. irqtune can tweak the speed up, but you should check the previous
items first. I believe irqtune has some caveats and possible negative
effects.
Geof
DISCLAIMER: The comments above are my own and may not represent the views
of my employer.
+-------------------------------+-------------------------------------------+
: Geoffrey P. Goodrum : US Department of Commerce :
: +1-301-457-5100 : NOAA/NESDIS National Climatic Data Center :
: [EMAIL PROTECTED]: Satellite Services Branch :
+-------------------------------+-------------------------------------------+
-
To unsubscribe from this list: send the line "unsubscribe linux-ppp" in
the body of a message to [EMAIL PROTECTED]
