netdev - Re: [PATCH net-next] net: introduce napi_schedule

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Message-ID: <1414557621.631.52.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Tue, 28 Oct 2014 21:40:21 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:	David Miller <davem@...emloft.net>, netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next] net: introduce napi_schedule_irqoff()

On Tue, 2014-10-28 at 21:17 -0700, Alexei Starovoitov wrote:
> On Tue, Oct 28, 2014 at 8:30 PM, Eric Dumazet <eric.dumazet@...il.com> wrote:
> > On Tue, 2014-10-28 at 18:17 -0700, Alexei Starovoitov wrote:
> >
> >> Interesting! Are you trying to optimize some of such NIC drivers? ;)
> >
> > ??
> >
> >> but all of 10G+ and virtio won't apply, right?
> >
> >
> > Which 10G+ driver could not use this ?
> >
> > mlx4 patch would be :
> 
> right.
> but it's not a critical path for napi drivers. Why bother?

You probably are missing something.

This is a critical path, of course.

Try netperf -t TCP_RR for example.




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