From: David Miller <davem@davemloft.net>
To: greearb@candelatech.com
Cc: eric.dumazet@gmail.com, simonchennj@gmail.com, netdev@vger.kernel.org
Subject: Re: increase the number of routing tables
Date: Sun, 29 Jan 2012 16:01:52 -0500 (EST) [thread overview]
Message-ID: <20120129.160152.1463516627658543873.davem@davemloft.net> (raw)
In-Reply-To: <4F24B2E9.3010600@candelatech.com>
From: Ben Greear <greearb@candelatech.com>
Date: Sat, 28 Jan 2012 18:46:01 -0800
> On 01/28/2012 06:41 PM, Eric Dumazet wrote:
>> Its is possible, but probably not scalable.
>
> I've run with a few thousand routing tables and probably 5000 or so
> rules. It seems to run OK....
>
>> You really should not have too many "ip rule" entries, since they are
>> evaluated linearly.
>
> For every packet, or maybe just until conn-track gets an entry
> for the connection?
When the routing cache is removed, using a huge number of rules is not
going to be something you want to do any more because the rule table
will be inspected on every route lookup.
next prev parent reply other threads:[~2012-01-29 21:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-29 2:20 increase the number of routing tables Simon Chen
2012-01-29 2:41 ` Eric Dumazet
2012-01-29 2:46 ` Ben Greear
2012-01-29 4:20 ` Simon Chen
2012-01-29 19:26 ` Ben Greear
2012-01-31 3:06 ` Simon Chen
2012-01-29 21:02 ` David Miller
2012-01-29 21:01 ` David Miller [this message]
2012-01-30 17:26 ` Ben Greear
2012-01-30 17:36 ` David Miller
2012-01-30 12:25 ` Thomas Graf
2012-01-30 12:44 ` Eric Dumazet
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