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Date:      Fri, 15 Jun 2018 09:09:05 +0900 (JST)
From:      Mori Hiroki <yamori813@yahoo.co.jp>
To:        Adrian Chadd <adrian.chadd@gmail.com>, "josef.lar@gmail.com" <josef.lar@gmail.com>
Cc:        "freebsd-mips@freebsd.org" <freebsd-mips@freebsd.org>
Subject:   Re: Routing performance (Buffalo WZR-HP-G301NH)
Message-ID:  <161784.64603.qm@web101702.mail.ssk.yahoo.co.jp>
In-Reply-To: <CAJ-Vmo=BMTVVcyTpY8NqcsuLKdGtXnQSbfduWqgejdveNtbukw@mail.gmail.com>
References:  <69b4cfd1-1664-ebbf-5734-7be38a70e938@gmail.com> <CAJ-Vmo=BMTVVcyTpY8NqcsuLKdGtXnQSbfduWqgejdveNtbukw@mail.gmail.com>

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Hi=0A=0AI add iperf3 profile to ZRouter and check network performance.=0A=
=0AThis is result.=0A=0AWZR-HP-G300NH=0A=0AAR9132=0A=0A=0A[=A0 4] =A0 0.00-=
10.04=A0 sec =A0 118 MBytes=A0 98.2 Mbits/sec=A0 =A0 0 =A0 =A0 =A0 =A0 =A0 =
=A0 sender=0A[=A0 4] =A0 0.00-10.04=A0 sec =A0 118 MBytes=A0 98.2 Mbits/sec=
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 receiver=0A=0AWZR-HP-AG300H=0A=0AAR7161=
=0A=0A=0A[=A0 4] =A0 0.00-10.03=A0 sec =A0 222 MBytes =A0 186 Mbits/sec=A0 =
=A0 0 =A0 =A0 =A0 =A0 =A0 =A0 sender=0A[=A0 4] =A0 0.00-10.03=A0 sec =A0 22=
2 MBytes =A0 186 Mbits/sec=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 receiver=0A=
=0AI seem=A0AR9132 is slower than=A0AR7161=0A=0AAlso you can tcp tuning on =
sysctl.=0A=0AHiroki Mori=0A=0A=0A----- Original Message -----=0A> From: Adr=
ian Chadd <adrian.chadd@gmail.com>=0A> To: josef.lar@gmail.com=0A> Cc: "fre=
ebsd-mips@freebsd.org. Robert Pera" <mips@freebsd.org>=0A> Date: 2018/6/12,=
 Tue 06:39=0A> Subject: Re: Routing performance (Buffalo WZR-HP-G301NH)=0A>=
 =0A> Hi!=0A> =0A> Ok, so!=0A> =0A> * the seiral console hurts a lot. Don't=
 print stuff on the console=0A> whilst testing.=0A> * I've done a writeup o=
n this when I dug into it a couple years ago.=0A> https://adrianchadd.blogs=
pot.com/=0A> =0A> =0A> =0A> -adrian=0A> =0A> On Fri, 4 May 2018 at 02:22, J=
osef Larsson <josef.lar@gmail.com> wrote:=0A>> =0A>>  Hi,=0A>> =0A>>  I wou=
ld like to use the Buffalo WZR-HP-G301NH as a router with pf. I use=0A>>  a=
 custom built ZRouter image for this. This works in practice, but I am=0A>>=
  not happy with the performance (I basically can't download faster than=0A=
>>  80 mbit/s).=0A>> =0A>>  I have a couple of concerns:=0A>> =0A>>  1. Acc=
ording to ps aux, there is an interrupt load at about 9 - 10 %=0A>>  during=
 idle conditions. Is this reasonable? It seems high to me.=0A>>  2. When I =
am running "pmcstat -TS instructions -w1", there seems =0A> to be a=0A>>  l=
ot of action going on in uart_ar71xx_probe. Is this reasonable? There=0A>> =
 are some unknown functions, and I am suspect that the function names are=
=0A>>  not resolved correctly. Also, apb_attach is invoked a lot according=
=0A>>  pmcstat. While the sampling percentage for this function is less tha=
n 2=0A>>  %, I still find it odd that an attach function is invoked at idle=
...=0A>>  3. When downloading a large file, the system becomes pretty much=
=0A>>  unresponsive. When a "ps aux" call actually goes through, one can =
=0A> see=0A>>  that the CPU is busy with ~100 % interrupt handling. This is=
 what I=0A>>  would like to profile with pmcstat, but the arge functions do=
 not show=0A>>  up as functions with high load, which is not really what I =
expect at=0A>>  this point, since the interrupt definitely has to do with t=
he LAN load.=0A>>  Any suggestions on how to profile the arge driver?=0A>> =
=0A>>  Best regards,=0A>> =0A>>  Josef Larsson=0A>> =0A>> =0A> ____________=
___________________________________=0A> freebsd-mips@freebsd.org mailing li=
st=0A> https://lists.freebsd.org/mailman/listinfo/freebsd-mips=0A>; To unsub=
scribe, send any mail to =0A> "freebsd-mips-unsubscribe@freebsd.org"=0A> 



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