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Re: [RFC] Use RCU for fib_rules

from [Nivedita Singhvi] [Permanent Link][Original]
To: Stephen Hemminger <shemminger@xxxxxxxx>
Subject: Re: [RFC] Use RCU for fib_rules
From: Nivedita Singhvi <niv@xxxxxxxxxx>
Date: Wed, 31 Mar 2004 12:20:56 -0800
Cc: "David S. Miller" <davem@xxxxxxxxxx>, Paul McKenney <Paul.McKenney@xxxxxxxxxx>, netdev@xxxxxxxxxxx
In-reply-to: <20040331112839.02e8d4c2@dell_ss3.pdx.osdl.net>
References: <20040331112839.02e8d4c2@dell_ss3.pdx.osdl.net>
Sender: netdev-bounce@xxxxxxxxxxx
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.2.1) Gecko/20021130 
Stephen Hemminger wrote:

The IP forwarding rules, uses rwlock when it could use RCU.
Don't know if this would help or hurt the recent discussions about
large rulesets and DOS attacks.

Also, it increases the size of fib_rule slightly. 

Stephen,

Any benchmarks or perf tests that quantify the gain here?

thanks,
Nivedita





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