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From: Tom Barbette <barbette@kth.se>
To: Filip Janiszewski <contact@filipjaniszewski.com>,
	"users@dpdk.org" <users@dpdk.org>
Subject: Re: [dpdk-users] Round-robin packet distribution
Date: Sat, 25 Jul 2020 10:35:00 +0200
Message-ID: <cf04f799-a92a-137f-b079-a42e7987dc9e@kth.se> (raw)
In-Reply-To: <9a39c4d5-8248-5223-df10-1c25fa1331c0@filipjaniszewski.com>

Hi Filip,

This is not possible, but you may use the idea of Sprayer 
(http://www.gta.ufrj.br/ftp/gta/TechReports/SCC18d.pdf) to dispatch 
packets randomly (use RSS on the checksum).

However, in our paper RSS++ 
(https://www.diva-portal.org/smash/get/diva2:1371780/FULLTEXT01.pdf) we 
show it's nearly always a bad idea because you'll have to share state, 
and even for "stateless" function, that leads to a very bad locality in 
a firewall as the same rules have to be fetched to L1 to all cores at 
the same time when you receive a burst of similar packets.


Le 24/07/2020 à 12:05, Filip Janiszewski a écrit :
> Hi,
> Is there a way in DPDK to configure the NIC to distribute the incoming
> packets to multiple queues in a round robin fashion? Without taking into
> account the payload/headers or type of packet, just plain round robin
> distribution to multiple queues.
> I'm struggling to obtain a fair mechanism using RSS, perhaps the
> rte_flow API can do the trick? Any other suggestion?
> Thanks

  reply	other threads:[~2020-07-25  8:35 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-24 10:05 Filip Janiszewski
2020-07-25  8:35 ` Tom Barbette [this message]
     [not found] ` <8c8034d8-4cd5-bd0b-0958-14d08f5ae6e3@kth.se>
2020-08-18 12:40   ` Filip Janiszewski
2020-08-18 13:50     ` Pawel Wodkowski
2020-08-18 14:27       ` Filip Janiszewski
2020-08-24 10:08         ` Tom Barbette
     [not found]         ` <09498ac1-672d-a1e5-f917-d5720e1c90a7@kth.se>
2020-08-25 12:17           ` Pawel Wodkowski
2020-08-31 14:56             ` Filip Janiszewski

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