Re: [PATCH] tcp: bind() use stronger condition for bind_conflict

From: Alexandru Copot
Date: Thu Mar 29 2012 - 04:22:26 EST

On Wed, Mar 28, 2012 at 11:12 PM, Eric Dumazet <eric.dumazet@xxxxxxxxx> wrote:

> Some performance data would be welcomed, in the case many sockets are
> already bound...

I've done some tests running a program that creates and binds(0) 90000 sockets.
The total running time, on average, is:
* without this patch: 0.352 s
* with the patch: 0.355 s

Also, recording this program with perf shows a small increase of 0.6%
for inet_csk_get_port
relative to inet_bind, after applying the patch.

So the performance is almost the same, even for such a large number of sockets.

Alex Copot
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