From: "Toke Høiland-Jørgensen" <toke@redhat.com>
To: "Björn Töpel" <bjorn.topel@intel.com>,
"Björn Töpel" <bjorn.topel@gmail.com>,
ast@kernel.org, daniel@iogearbox.net, netdev@vger.kernel.org,
bpf@vger.kernel.org
Cc: maciej.fijalkowski@intel.com, hawk@kernel.org,
magnus.karlsson@intel.com, john.fastabend@gmail.com,
kuba@kernel.org, davem@davemloft.net
Subject: Re: [PATCH bpf-next v4 1/2] bpf, xdp: make bpf_redirect_map() a map operation
Date: Fri, 26 Feb 2021 13:26:22 +0100 [thread overview]
Message-ID: <87h7lzypzl.fsf@toke.dk> (raw)
In-Reply-To: <d4910425-82ae-b1ce-68c3-fb5542f598a5@intel.com>
Björn Töpel <bjorn.topel@intel.com> writes:
> On 2021-02-26 12:40, Björn Töpel wrote:
>> On 2021-02-26 12:37, Toke Høiland-Jørgensen wrote:
>
> [...]
>
>>>
>>> (That last paragraph above is why I asked if you updated the performance
>>> numbers in the cover letter; removing an additional function call should
>>> affect those, right?)
>>>
>>
>> Yeah, it should. Let me spend some more time benchmarking on the DEVMAP
>> scenario.
>>
>
> I did a re-measure using samples/xdp_redirect_map.
>
> The setup is 64B packets blasted to an i40e. As a baseline,
>
> # xdp_rxq_info --dev ens801f1 --action XDP_DROP
>
> gives 24.8 Mpps.
>
>
> Now, xdp_redirect_map. Same NIC, two ports, receive from port A,
> redirect to port B:
>
> baseline: 14.3 Mpps
> this series: 15.4 Mpps
>
> which is almost 8%!
Or 5 ns difference:
10**9/(14.3*10**6) - 10**9/(15.4*10**6)
4.995004995005004
Nice :)
-Toke
next prev parent reply other threads:[~2021-02-26 12:27 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-26 11:23 [PATCH bpf-next v4 0/2] Optimize bpf_redirect_map()/xdp_do_redirect() Björn Töpel
2021-02-26 11:23 ` [PATCH bpf-next v4 1/2] bpf, xdp: make bpf_redirect_map() a map operation Björn Töpel
2021-02-26 11:37 ` Toke Høiland-Jørgensen
2021-02-26 11:40 ` Björn Töpel
2021-02-26 12:04 ` Björn Töpel
2021-02-26 12:26 ` Toke Høiland-Jørgensen [this message]
2021-02-26 14:28 ` Jesper Dangaard Brouer
2021-02-26 14:27 ` Jesper Dangaard Brouer
2021-02-26 14:29 ` Jesper Dangaard Brouer
2021-02-26 15:23 ` kernel test robot
2021-02-26 21:48 ` Daniel Borkmann
2021-02-27 9:04 ` Björn Töpel
2021-02-27 10:22 ` Daniel Borkmann
2021-02-26 11:23 ` [PATCH bpf-next v4 2/2] bpf, xdp: restructure redirect actions Björn Töpel
2021-02-26 11:35 ` [PATCH bpf-next v4 0/2] Optimize bpf_redirect_map()/xdp_do_redirect() Toke Høiland-Jørgensen
2021-02-26 11:38 ` Björn Töpel
2021-02-26 11:43 ` Toke Høiland-Jørgensen
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