netdev - Re: rps perfomance WAS(Re: rps: question

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20100415.015005.156280476.davem@davemloft.net>
Date:	Thu, 15 Apr 2010 01:50:05 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	shemminger@...tta.com
Cc:	hadi@...erus.ca, eric.dumazet@...il.com, therbert@...gle.com,
	netdev@...r.kernel.org, robert@...julf.net, xiaosuo@...il.com,
	andi@...stfloor.org
Subject: Re: rps perfomance WAS(Re: rps: question

From: Stephen Hemminger <shemminger@...tta.com>
Date: Wed, 14 Apr 2010 12:44:26 -0700

> On Wed, 14 Apr 2010 14:53:42 -0400
> jamal <hadi@...erus.ca> wrote:
> 
>> Agreed. So to enumerate, the benefits come in if:
>> a) you have many processors
>> b) you have single-queue nic
>> c) at sub-threshold traffic you dont care about a little latency
> 
> There probably needs to be better autotuning for this, there is no reason
> that RPS to be steering packets unless the queue is getting backed up.

I disagree, if the goal is to migrate the bulk of packet processing
to where the app will actually sink and process the data then it should
forward to RPS marked cpus regardless of local queue levels.

--
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