lkml.org 
[lkml]   [2002]   [Mar]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Networking with slow CPUs
Robert Schwebel wrote:

> Hi,
>
> in the 2.2 series there was a switch for "CPU is too slow to handle full
> bandwidth" which has gone in 2.4. Can anybody tell me the reason for this?
>
> Is there a possibility to "harden" a small machine (33 MHz embedded
> device) against e.g. flood pings from the outside world?
>

AFAIK, there is a mechanism to switch off the interrupts generated
by the network card, if the load is getting too high. This way the
packets get overwritten on the nic buffers and do not even reach
the CPU.

I don't know if this is implemented (in all drivers?)

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:25    [from the cache]
©2003-2011 Jasper Spaans. Advertise on this site