From: "Toke Høiland-Jørgensen" <toke@redhat.com>
To: "Björn Töpel" <bjorn.topel@gmail.com>
Cc: "Daniel Borkmann" <daniel@iogearbox.net>,
Netdev <netdev@vger.kernel.org>,
"Alexei Starovoitov" <ast@kernel.org>,
"Björn Töpel" <bjorn.topel@intel.com>, bpf <bpf@vger.kernel.org>,
"Magnus Karlsson" <magnus.karlsson@gmail.com>,
"Karlsson, Magnus" <magnus.karlsson@intel.com>,
"Jonathan Lemon" <jonathan.lemon@gmail.com>
Subject: Re: [RFC PATCH bpf-next 2/4] bpf: introduce BPF dispatcher
Date: Thu, 14 Nov 2019 16:12:55 +0100 [thread overview]
Message-ID: <87zhgymqyw.fsf@toke.dk> (raw)
In-Reply-To: <CAJ+HfNhRKFGOsv5Nbq5T9NHk=ZcHnK40_jR8bpqNC1GYk8ovTA@mail.gmail.com>
Björn Töpel <bjorn.topel@gmail.com> writes:
> On Thu, 14 Nov 2019 at 15:55, Toke Høiland-Jørgensen <toke@redhat.com> wrote:
>>
> [...]
>> I don't really have anything to back it up, but my hunch is that only 4
>> entries will end up being a limit that people are going to end up
>> hitting. And since the performance falls off quite the cliff after
>> hitting that limit, I do fear that this is something we will hear about
>> quite emphatically :)
>>
>
> Hmm, maybe. I have 8 i40e netdevs on my test machine, all running XDP,
> but I don't think that's normal for deployments. ;-)
Well, the fact that products like this exist kinda indicates that this
is something people are doing, no?
https://small-tree.net/products/10gbe-switches/p3e10g-6-sr/
-Toke
next prev parent reply other threads:[~2019-11-14 15:13 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-13 20:47 [RFC PATCH bpf-next 0/4] Introduce xdp_call.h and the BPF dispatcher Björn Töpel
2019-11-13 20:47 ` [RFC PATCH bpf-next 1/4] bpf: teach bpf_arch_text_poke() jumps Björn Töpel
2019-11-13 20:47 ` [RFC PATCH bpf-next 2/4] bpf: introduce BPF dispatcher Björn Töpel
2019-11-13 21:40 ` Edward Cree
2019-11-14 6:29 ` Björn Töpel
2019-11-14 10:18 ` Edward Cree
2019-11-14 11:21 ` Björn Töpel
2019-11-14 13:58 ` Peter Zijlstra
2019-11-14 12:31 ` Toke Høiland-Jørgensen
2019-11-14 13:03 ` Daniel Borkmann
2019-11-14 13:09 ` Toke Høiland-Jørgensen
2019-11-14 13:56 ` Björn Töpel
2019-11-14 14:55 ` Toke Høiland-Jørgensen
2019-11-14 15:03 ` Björn Töpel
2019-11-14 15:12 ` Toke Høiland-Jørgensen [this message]
2019-11-15 0:30 ` Alexei Starovoitov
2019-11-15 7:56 ` Björn Töpel
2019-11-15 21:58 ` Alexei Starovoitov
2019-11-18 10:03 ` Björn Töpel
2019-11-18 19:36 ` Andrii Nakryiko
2019-11-18 20:11 ` Björn Töpel
2019-11-13 20:47 ` [RFC PATCH bpf-next 3/4] xdp: introduce xdp_call Björn Töpel
2019-11-13 20:47 ` [RFC PATCH bpf-next 4/4] i40e: start using xdp_call.h Björn Töpel
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