On Wed, 14 Oct 2015 10:23:25 +0000
Poul-Henning Kamp <[email protected]> wrote:

> --------
> In message <[email protected]>, Rafael Zalamena writes:
> 
> 
> >> Did somebody actually try to enable it to see that it works on at least
> >> one machine ?
> >
> >Yes, we have this option enabled in production [...]
> >We are using Linux 3.18.11 and varnish 4.1 (we had 4.0.3 before the 4.1
> >stable release).
> >
> >If you need more information just mail me.
> 
> Is it faster/better ?
> 

It might not be faster (in response time), but it is better in resources
usage.

There is a notable lower cpu usage due to the decreased number of syscalls
in busy workloads with many new connections per second.

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