Re: Network Slowdowns?

["Jonas Trollvik" <jontro@xxxxxxxxx>]

Maybe the tx start threshold should be increased to 240 per default
for the xl driver.
I get this log message for both my two xl cards (internal network and
vdsl network) and it always stops at 240.
-Jonas

On 10/7/06, Sepherosa Ziehau <sepherosa@xxxxxxxxx> wrote:
> On 07 Oct 2006 07:39:21 GMT, Jamie <nospam@xxxxxxxxxxxxx> wrote:
> > In <200610062026.k96KQ8KU060912@xxxxxxxxxxxxxxxxxxxx>,
> > Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx> mentions: >    There are a couple of possibilities.  One is that the driver is broken
> > >    or can't handle that particular card or motherboard device.  Typically
> > >    when that happens you get 'watchdog timeout' messages on the console.
> > >    Run 'dmesg' to see if you get any such messages.
> >
> > Nope, no watchdog messages.
> >
> > I do get several of these though:
> >
> > xl0: transmission error: 90
> > xl0: tx underrun, increasing tx start threshold to 120 bytes
>
> From 3com's DS, 0x90 means your host's feeding packets rate is too low.
>
> How many times you have seen this error?  Let's take it as N
>
> line 433 in /usr/src/sys/dev/netif/xl/if_xlreg.h
> #define XL_MIN_FRAMELEN 60
>
> Say N == 3, then change above line to (3 + 1) * 60, i.e.
> #define XL_MIN_FRAMELEN 240
>
> But keep it less then 1540
>
> See whether the problem still plagues you
>
> Best Regards,
> sephe
>
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