netdev - Re: Scaling 'ip addr add' (was Re: What's the right way to use a *large* number of source addresses?)

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Date:	Thu, 29 May 2014 10:19:40 -0600
From:	David Ahern <dsahern@...il.com>
To:	sowmini varadhan <sowmini05@...il.com>,
	Julian Anastasov <ja@....bg>
CC:	Jamal Hadi Salim <jhs@...atatu.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Niels Möller <nisse@...thpole.se>,
	netdev <netdev@...r.kernel.org>, Jonas Bonn <jonas@...thpole.se>
Subject: Re: Scaling 'ip addr add' (was Re: What's the right way to use a
 *large* number of source addresses?)

On 5/29/14, 10:11 AM, sowmini varadhan wrote:
> I'm still not sure I understand*why*  check_lifetime ends
> up being expensive, though. For this particular test, all the
...
>
> fib_sync_up() could also use a magnifying glass - was going to
> look at this later.

Annotation feature of perf should help
     perf record -ga -- <command>

     'perf report' with a TUI and then hit 'a' for annotation mode
     or use 'perf annotate -k vmlinux -s <symbol name>'

David

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