netdev - Re: [PATCH net-next 0/6] ipv6: ipv6_dev_get

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Date:   Sun, 08 Oct 2017 21:17:53 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     edumazet@...gle.com
Cc:     netdev@...r.kernel.org, eric.dumazet@...il.com,
        yoshfuji@...ux-ipv6.org
Subject: Re: [PATCH net-next 0/6] ipv6: ipv6_dev_get_saddr() rcu works

From: Eric Dumazet <edumazet@...gle.com>
Date: Sat,  7 Oct 2017 19:30:22 -0700

> Sending IPv6 udp packets on non connected sockets is quite slow,
> because ipv6_dev_get_saddr() is still using an rwlock and silly
> references games on ifa.
> 
> Tested:
> 
> $ ./super_netperf 16 -H 4444::555:0786 -l 2000 -t UDP_STREAM -- -m 100 &
> [1] 12527
> 
> Performance is boosted from 2.02 Mpps to 4.28 Mpps

Awesome, series applied, thanks!