netdev - Re: [RFC PATCH bpf-next 2/4] bpf: introduce BPF dispatcher

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:   Thu, 14 Nov 2019 16:12:55 +0100
From:   Toke Høiland-Jørgensen <toke@...hat.com>
To:     Björn Töpel <bjorn.topel@...il.com>
Cc:     Daniel Borkmann <daniel@...earbox.net>,
        Netdev <netdev@...r.kernel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Björn Töpel <bjorn.topel@...el.com>,
        bpf <bpf@...r.kernel.org>,
        Magnus Karlsson <magnus.karlsson@...il.com>,
        "Karlsson\, Magnus" <magnus.karlsson@...el.com>,
        Jonathan Lemon <jonathan.lemon@...il.com>
Subject: Re: [RFC PATCH bpf-next 2/4] bpf: introduce BPF dispatcher

Björn Töpel <bjorn.topel@...il.com> writes:

> On Thu, 14 Nov 2019 at 15:55, Toke Høiland-Jørgensen <toke@...hat.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