netdev - Re: [PATCH v8 net-next 2/2] bonding: Simplify the xmit function for modes that use xmit

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Date:	Mon, 19 Oct 2015 18:35:56 +0200
From:	Jiri Pirko <jiri@...nulli.us>
To:	Mahesh Bandewar <maheshb@...gle.com>
Cc:	Jay Vosburgh <j.vosburgh@...il.com>,
	Andy Gospodarek <andy@...yhouse.net>,
	Veaceslav Falico <vfalico@...il.com>,
	Nikolay Aleksandrov <nikolay@...hat.com>,
	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	Eric Dumazet <edumazet@...gle.com>,
	Maciej Zenczykowski <maze@...gle.com>
Subject: Re: [PATCH v8 net-next 2/2] bonding: Simplify the xmit function for
 modes that use xmit_hash

Sun, Oct 05, 2014 at 02:45:01AM CEST, maheshb@...gle.com wrote:
>Earlier change to use usable slave array for TLB mode had an additional
>performance advantage. So extending the same logic to all other modes
>that use xmit-hash for slave selection (viz 802.3AD, and XOR modes).
>Also consolidating this with the earlier TLB change.
>
>The main idea is to build the usable slaves array in the control path
>and use that array for slave selection during xmit operation.
>
>Measured performance in a setup with a bond of 4x1G NICs with 200
>instances of netperf for the modes involved (3ad, xor, tlb)
>cmd: netperf -t TCP_RR -H <TargetHost> -l 60 -s 5
>
>Mode        TPS-Before   TPS-After
>
>802.3ad   : 468,694      493,101
>TLB (lb=0): 392,583      392,965
>XOR       : 475,696      484,517

Looking over bonding code now and came across this commit. It gave me a
little headache. Why don't you guys just use team instead of doing
bonding megapatches like this? This is making bonding code even more
complicated (screwed-up) :/ I don't understand.
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