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From: Jamal Hadi Salim <jhs@mojatatu.com>
To: Eric Dumazet <eric.dumazet@gmail.com>,
	sowmini varadhan <sowmini05@gmail.com>
Cc: "Niels Möller" <nisse@southpole.se>,
	netdev <netdev@vger.kernel.org>,
	"Jonas Bonn" <jonas@southpole.se>
Subject: Re: What's the right way to use a *large* number of source addresses?
Date: Sat, 24 May 2014 08:06:41 -0400	[thread overview]
Message-ID: <53808B51.4050308@mojatatu.com> (raw)
In-Reply-To: <1400854458.5367.200.camel@edumazet-glaptop2.roam.corp.google.com>

On 05/23/14 10:14, Eric Dumazet wrote:

> Use the batch mode, and it will be much faster than ifconfig, as
> ifconfig does not support this mode (you need one fork()/exec() per IP
> address)
>
> ip -batch filename
>

The address dumping algorithm is a very likely contributor as well.
It tries to remember indices and then skips on the next iteration
all the way to where it left off.... has never been a big deal until
someone tries a substantial number of addresses.

cheers,
jamal

  reply	other threads:[~2014-05-24 12:06 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-23  9:38 What's the right way to use a *large* number of source addresses? Niels Möller
2014-05-23 10:11 ` Florian Westphal
2014-05-23 10:49   ` Lukas Tribus
2014-05-23 12:26   ` Niels Möller
2014-05-23 14:12   ` Niels Möller
2014-05-23 12:53 ` sowmini varadhan
2014-05-23 14:14   ` Eric Dumazet
2014-05-24 12:06     ` Jamal Hadi Salim [this message]
2014-05-23 22:39 ` Cong Wang
2014-05-26  6:39   ` Niels Möller
2014-05-24 11:58 ` Jamal Hadi Salim
2014-05-24 14:44   ` Richard Weinberger
2014-05-24 15:13     ` Jamal Hadi Salim
2014-05-24 16:02       ` Richard Weinberger
2014-05-24 17:54         ` David Miller
2014-05-24 18:30         ` Jamal Hadi Salim

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