IPFW update frequency

[AT Matik]

On Friday 30 March 2007 17:40, Julian Elischer wrote:
> I have been looking at the IPFW code recently, especially
> with respect to locking.
> There are some things that could be done to improve IPFW's
> behaviour when processing packets, but some of these take a
> toll (there is always a toll) on the 'updating' side of things.
>

Hi , 
would you mind to explain your way of "add a toll", do you mean kind of price 
for a benefit or something like that? Sorry I am not native american english 
speaker. 

If I understand this right I would say that it does not matter for adding 
rules, what is of interest is processing time when they exist already

> Is there anyone out there who is adding hundreds (or even dozens) of rules
> per second on a continuous basis, or who wants rule changing to
> be a really efficient operation?

even if ...
I have a system which takes additional custom parms from rc.conf. 
so lets say the admin configures a new IP or port he executes a script which 
flushes the old and executes the new rules

it doesn't matter the time it takes to execute the new rules - what certainly 
depends on machine capacities - what matters at the end is how fast the 
machine can process the rules at run-time ... whatever it is .. as long as it 
is faster ... not building the rule set  but running them under load

> (does it matter to you if it takes a few milliSecs to add a rule?)

absolutely NOT


João 







A mensagem foi scaneada pelo sistema de e-mail e pode ser considerada segura.
Service fornecido pelo Datacenter Matik  https://datacenter.matik.com.br