From: Jesper Dangaard Brouer <jbrouer@redhat.com>
To: "Björn Töpel" <bjorn.topel@intel.com>
Cc: "Toke Høiland-Jørgensen" <toke@redhat.com>,
"Björn Töpel" <bjorn.topel@gmail.com>,
ast@kernel.org, daniel@iogearbox.net, netdev@vger.kernel.org,
bpf@vger.kernel.org, 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 15:27:10 +0100 [thread overview]
Message-ID: <20210226152710.31a6f26e@carbon> (raw)
In-Reply-To: <694101a1-c8e2-538c-fdd5-c23f8e2605bb@intel.com>
On Fri, 26 Feb 2021 12:40:33 +0100
Björn Töpel <bjorn.topel@intel.com> wrote:
> @Jesper Do you have a CPUMAP benchmark that you can point me to? I just
> did functional testing for CPUMAP
I usually just use the xdp_redirect_cpu samples/bpf program.
Your optimization will help the RX enqueue side, but the bottleneck for
CPUMAP is the remote CPU dequeue. You should still be able to see that
RX-side performance improve, and that should be enough (even-though
packets are dropped before reaching remote CPU). I'm not going to ask
you to test scale out to more CPUs.
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
LinkedIn: http://www.linkedin.com/in/brouer
next prev parent reply other threads:[~2021-02-26 14:28 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
2021-02-26 14:28 ` Jesper Dangaard Brouer
2021-02-26 14:27 ` Jesper Dangaard Brouer [this message]
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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