very slow netconsole

I have u-boot 1.1.6 running on my board based on IXP425 processor (266MhZ).

I trying to use netconsole.
I readed doc/README.NetConsole and make connection with u-boot. On u-boot I do:
setenv nc 'setenv stdout nc;setenv stdin nc' setenv ncip 192.168.1.5:1234
saveenv
run nc
On host PC (192.168.1.5) I run following script:
nc -u -l 1234 < /dev/null &
nc -u 192.168.1.88 1234

Note that in first host command I omitted "-p" flag before port definition. The problem is the communication in vary slow: one character per second!

Any suggestion ?

...

Try current code? 1.3.2?

Best regards,

Wolfgang Denk

DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Tactical? TACTICAL!?!? Hey, buddy, we went from kilotons to  megatons
several  minutes  ago.  We don't need no stinkin' tactical nukes. (By
the way, do you have change for 10 million people?)           - lwall

I just now:
- switched to Intel IXDPG425 board (to have a "standard" board reference);
- downloaded and compiled u-Boot 1.3.2 with NetConsole support;

Even in this scenario the communication is slow !

Best Regards,
Antonello Lombardinilo

Take a look at your ethernet driver (I think cpu/ixp/npe.c). The eth_halt and eth_init functions are called before each transfer, even for single character.

In npe_halt:

        debug("%s\n", __FUNCTION__);

        /* Delay to give time for recovery of mbufs */
        for (i = 0; i < 100; i++) {
                npe_poll(p_npe->eth_id);
                udelay(100);
        }

The delay seems strictly correlated to the slowness you report. Check the npe_init function, too. If the ethernet is reinitialized after each transfer, the result is a very slow connection.

Best regards,
Stefano Babic

=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================