From: Daniel Borkmann <daniel@iogearbox.net>
To: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>,
Patrick McHardy <kaber@trash.net>,
Alexei Starovoitov <alexei.starovoitov@gmail.com>,
netfilter-devel@vger.kernel.org, davem@davemloft.net,
netdev@vger.kernel.org
Subject: Re: [PATCH 6/6] net: move qdisc ingress filtering on top of netfilter ingress hooks
Date: Thu, 30 Apr 2015 21:16:17 +0200 [thread overview]
Message-ID: <55427F81.4080807@iogearbox.net> (raw)
In-Reply-To: <20150430163634.GA3814@salvia>
On 04/30/2015 06:36 PM, Pablo Neira Ayuso wrote:
...
> But where are the barriers? These unfounded performance claims are
> simply absurd, qdisc ingress barely performs a bit better just because
> it executes a bit less code and only in the single CPU scenario with
> no rules at all.
I think we're going in circles a bit. :( You are right in saying that
currently, there's a central spinlock, which is worked on to get rid
of, you've seen the patch on the list floating around already. Single
CPU, artificial micro-benchmark, which were done show that you see on
your machine ~613Kpps to ~545Kpps, others have seen it more amplified
as 22.4Mpps to 18.0Mpps drop from __netif_receive_skb_core() up to an
empty dummy u32_classify() rule, which has already been acknowledged
that this gap needs to be improved. Lets call it unfounded then. I
think we wouldn't even have this discussion if we wouldn't try brute
forcing both worlds behind this single static key, or, have both
invoked from within the same layer/list.
Cheers,
Daniel
next prev parent reply other threads:[~2015-04-30 19:16 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-29 18:53 [PATCH 0/6 RFC] Netfilter ingress support (v2) Pablo Neira Ayuso
2015-04-29 18:53 ` [PATCH 1/6] netfilter: cleanup struct nf_hook_ops indentation Pablo Neira Ayuso
2015-04-29 18:53 ` [PATCH 2/6] netfilter: add hook list to nf_hook_state Pablo Neira Ayuso
2015-04-29 18:53 ` [PATCH 3/6] netfilter: add nf_hook_list_active() Pablo Neira Ayuso
2015-04-29 18:53 ` [PATCH 4/6] netfilter: move generic hook infrastructure into net/core/hooks.c Pablo Neira Ayuso
2015-04-29 23:59 ` Patrick McHardy
2015-04-29 18:53 ` [PATCH 5/6] net: add netfilter ingress hook Pablo Neira Ayuso
2015-04-29 18:53 ` [PATCH 6/6] net: move qdisc ingress filtering on top of netfilter ingress hooks Pablo Neira Ayuso
2015-04-29 20:27 ` Daniel Borkmann
2015-04-29 23:32 ` Pablo Neira Ayuso
2015-04-30 0:10 ` Daniel Borkmann
2015-04-30 0:20 ` Daniel Borkmann
2015-04-30 0:30 ` Patrick McHardy
2015-04-30 0:41 ` Daniel Borkmann
2015-04-30 0:48 ` Patrick McHardy
2015-04-30 1:16 ` Alexei Starovoitov
2015-04-30 1:34 ` Patrick McHardy
2015-04-30 2:22 ` Jamal Hadi Salim
2015-04-30 3:11 ` Patrick McHardy
2015-04-30 11:55 ` Jamal Hadi Salim
2015-04-30 15:33 ` Pablo Neira Ayuso
2015-04-30 16:09 ` Daniel Borkmann
2015-04-30 16:36 ` Pablo Neira Ayuso
2015-04-30 19:16 ` Daniel Borkmann [this message]
2015-04-30 23:01 ` Daniel Borkmann
2015-05-01 1:15 ` Jamal Hadi Salim
2015-04-30 10:12 ` Pablo Neira Ayuso
2015-04-30 19:05 ` Alexei Starovoitov
2015-04-30 0:37 ` Patrick McHardy
2015-04-30 1:04 ` Daniel Borkmann
2015-04-30 1:43 ` Patrick McHardy
2015-04-30 2:35 ` Jamal Hadi Salim
2015-04-30 3:29 ` Patrick McHardy
2015-04-30 4:05 ` Patrick McHardy
2015-04-30 6:02 ` Alexei Starovoitov
2015-04-30 9:24 ` Daniel Borkmann
2015-04-30 10:28 ` Pablo Neira Ayuso
2015-04-29 23:36 ` Patrick McHardy
2015-04-30 0:00 ` Daniel Borkmann
2015-04-30 0:15 ` Patrick McHardy
2015-04-29 21:53 ` Cong Wang
2015-04-29 23:37 ` Patrick McHardy
2015-04-29 23:42 ` Pablo Neira Ayuso
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