[Trilug-ontopic] ifconfig question.

Don Jerman djerman at pobox.com
Tue Jan 29 20:06:16 EST 2008

The questions are quick...

Looking at this I'd guess uptime has been a few hours, or else several
months, because the counters reset when they overflow or when you
restart the interface.

Error rate is around 0.027%, so it might not be worth fixing.  Your call.

Overruns are typically caused by the next packet arriving before the
interrupt service routine is done emptying the buffers.  That would
indicate a fast sender at the other end, many senders talking at once,
or a slow driver or malfunctioning card.  Check for duplex mismatch
too.  That's about all I can infer with this information (not that I
know all that much more about it).

On 1/29/08, Jason Watts <jsnonzzr at gmail.com> wrote:
> Guys, hopefully these are two quick questions.
> when I do an ifconfig -a on one of my boxes, I see a fairly large number of
> overruns.
>           RX packets:173319141 errors:0 dropped:0 overruns:46678 frame:0
>           TX packets:194764057 errors:0 dropped:0 overruns:1 carrier:0
>           collisions:0 txqueuelen:100
>           RX bytes:1809166178 (1725.3 Mb)  TX bytes:102562715 (97.8 Mb)
>           Interrupt:11 Base address:0xb800 Memory:ec0c3000-ec0c3038
> My 2 questions.
> 1)  How often do these numbers reset?
> 2)  to me, 47k seems like a large number, especially when all my other boxes
> are showing none, but what would be an acceptable number?  (I realize this
> is relative, but I'm asking for opinions as this is the first time I have
> ever researched this stuff and have little idea.)
> Thanks for any input and advice.
> jsn
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