RE: [EXT] Re: [PATCH 1/1] net: fec: using page pool to manage RX buffers

Shenwei Wang
2022-09-30T20:09:09Z

> -----Original Message-----
> From: Andrew Lunn <andrew@lunn.ch>
> Sent: Friday, September 30, 2022 3:02 PM
> To: Shenwei Wang <shenwei.wang@nxp.com>
> Cc: David S . Miller <davem@davemloft.net>; Eric Dumazet
> <edumazet@google.com>; Jakub Kicinski <kuba@kernel.org>; Paolo Abeni
> <pabeni@redhat.com>; Alexei Starovoitov <ast@kernel.org>; Daniel Borkmann
> <daniel@iogearbox.net>; Jesper Dangaard Brouer <hawk@kernel.org>; John
> Fastabend <john.fastabend@gmail.com>; Wei Fang <wei.fang@nxp.com>;
> netdev@vger.kernel.org; linux-kernel@vger.kernel.org; imx@lists.linux.dev
> Subject: Re: [EXT] Re: [PATCH 1/1] net: fec: using page pool to manage RX
> buffers
>
> Caution: EXT Email
>
> > The testing above was on the imx8 platform. The following are the
> > testing result On the imx6sx board:
> >
> > ######### Original implementation ######
> >
> > shenwei@5810:~/pktgen$ iperf -c 10.81.16.245 -w 2m -i 1
> > ------------------------------------------------------------
> > Client connecting to 10.81.16.245, TCP port 5001 TCP window size: 416
> > KByte (WARNING: requested 1.91 MByte)
> > ------------------------------------------------------------
> > [ 1] local 10.81.17.20 port 36486 connected with 10.81.16.245 port 5001
> > [ ID] Interval Transfer Bandwidth
> > [ 1] 0.0000-1.0000 sec 70.5 MBytes 591 Mbits/sec
> > [ 1] 1.0000-2.0000 sec 64.5 MBytes 541 Mbits/sec
> > [ 1] 2.0000-3.0000 sec 73.6 MBytes 618 Mbits/sec
> > [ 1] 3.0000-4.0000 sec 73.6 MBytes 618 Mbits/sec
> > [ 1] 4.0000-5.0000 sec 72.9 MBytes 611 Mbits/sec
> > [ 1] 5.0000-6.0000 sec 73.4 MBytes 616 Mbits/sec
> > [ 1] 6.0000-7.0000 sec 73.5 MBytes 617 Mbits/sec
> > [ 1] 7.0000-8.0000 sec 73.4 MBytes 616 Mbits/sec
> > [ 1] 8.0000-9.0000 sec 73.4 MBytes 616 Mbits/sec
> > [ 1] 9.0000-10.0000 sec 73.9 MBytes 620 Mbits/sec
> > [ 1] 0.0000-10.0174 sec 723 MBytes 605 Mbits/sec
> >
> >
> > ###### Page Pool implémentation ########
> >
> > shenwei@5810:~/pktgen$ iperf -c 10.81.16.245 -w 2m -i 1
> > ------------------------------------------------------------
> > Client connecting to 10.81.16.245, TCP port 5001 TCP window size: 416
> > KByte (WARNING: requested 1.91 MByte)
> > ------------------------------------------------------------
> > [ 1] local 10.81.17.20 port 57288 connected with 10.81.16.245 port 5001
> > [ ID] Interval Transfer Bandwidth
> > [ 1] 0.0000-1.0000 sec 78.8 MBytes 661 Mbits/sec
> > [ 1] 1.0000-2.0000 sec 82.5 MBytes 692 Mbits/sec
> > [ 1] 2.0000-3.0000 sec 82.4 MBytes 691 Mbits/sec
> > [ 1] 3.0000-4.0000 sec 82.4 MBytes 691 Mbits/sec
> > [ 1] 4.0000-5.0000 sec 82.5 MBytes 692 Mbits/sec
> > [ 1] 5.0000-6.0000 sec 82.4 MBytes 691 Mbits/sec
> > [ 1] 6.0000-7.0000 sec 82.5 MBytes 692 Mbits/sec
> > [ 1] 7.0000-8.0000 sec 82.4 MBytes 691 Mbits/sec
> > [ 1] 8.0000-9.0000 sec 82.4 MBytes 691 Mbits/sec
> > ^C[ 1] 9.0000-9.5506 sec 45.0 MBytes 686 Mbits/sec
> > [ 1] 0.0000-9.5506 sec 783 MBytes 688 Mbits/sec
>
> Cool, so it helps there as well.
>
> But you knew i was interested in these numbers. So you should of made them
> part of the commit message so i didn't have to ask...
>

Sorry. I am adding it to the commit v2.

Thanks,
Shenwei

> Andrew