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Date: Tue, 28 Oct 2014 22:13:43 -0700 From: Alexei Starovoitov <alexei.starovoitov@...il.com> To: Eric Dumazet <eric.dumazet@...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, Oct 28, 2014 at 9:40 PM, Eric Dumazet <eric.dumazet@...il.com> wrote: > 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. tried 50 parallel netperf -t TCP_RR over ixgbe and perf top were tcp stack bits, qdisc locks and netperf itself. What do you see? -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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