[H-GEN] bombardment

[ben.carlyle at invensys.com]

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G'day Martin,

If you're noticing slowdowns, particarlly if the network is unresponsive 
for short periods then returns to normal operation, you may have to 
consider kernel bugs or hardware problems. The device driver I use for my 
laptop network card appears to be at fault in a kind of network halt that 
occurs under high traffic conditions but clears its self automatically 
after a timeout. This problem doesn't affect me often as I make use of the 
full bandwidth of the card very rarely, but a more intensive purpose for 
my machine would yield very ugly results. You may find that poor 
performance is not due to any external factor at all...

Benjamin.





Bradley Marshall <zzbramar at uqconnect.net>
Sent by: Majordomo <majordom at caliburn.humbug.org.au>
12/03/02 14:22
Please respond to general

 
        To:     <general at lists.humbug.org.au>
        cc: 
        Subject:        RE: [H-GEN] bombardment


[ Humbug *General* list - semi-serious discussions about Humbug and  ]
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On Tue, 12 Mar 2002, Martin C wrote:

> now how do I fix it :)
> I cant see how this is possible,
>
> my biggest problem is the slow downs, would the kernel rejecting 
requests
> constantly result in slow performance?

It could, perhaps.  If either you open up UDP port 68 on the
server, or change the logging to not match it or reduce the
logging rate, you wouldn't see those messages anymore.

The other option would be to track down what is generating
those packets, and stop it.

There'd have to be quite a few packets being denied for it to
make that much of a difference, however.

Thanks,
Brad
         +=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-+
         | Bradley Marshall    | http://www.uq.net.au/~zzbramar |
         | System/Network Admin|      brad at humbug.org.au        |
         | Plugged In Software |    bmarshal at plugged.net.au     |
                  +-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=+
 ``I'm not ashamed.  Its the computer age.  Nerds are in.'' - Willow 
(BtVS)



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