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

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Message-ID: <PAXPR04MB91851D68BDDEAEF25DED506289569@PAXPR04MB9185.eurprd04.prod.outlook.com>
Date:   Fri, 30 Sep 2022 20:08:58 +0000
From:   Shenwei Wang <shenwei.wang@....com>
To:     Andrew Lunn <andrew@...n.ch>
CC:     "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        Wei Fang <wei.fang@....com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "imx@...ts.linux.dev" <imx@...ts.linux.dev>
Subject: RE: [EXT] Re: [PATCH 1/1] net: fec: using page pool to manage RX
 buffers



> -----Original Message-----
> From: Andrew Lunn <andrew@...n.ch>
> Sent: Friday, September 30, 2022 3:02 PM
> To: Shenwei Wang <shenwei.wang@....com>
> Cc: David S . Miller <davem@...emloft.net>; Eric Dumazet
> <edumazet@...gle.com>; Jakub Kicinski <kuba@...nel.org>; Paolo Abeni
> <pabeni@...hat.com>; Alexei Starovoitov <ast@...nel.org>; Daniel Borkmann
> <daniel@...earbox.net>; Jesper Dangaard Brouer <hawk@...nel.org>; John
> Fastabend <john.fastabend@...il.com>; Wei Fang <wei.fang@....com>;
> netdev@...r.kernel.org; linux-kernel@...r.kernel.org; imx@...ts.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@...0:~/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@...0:~/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