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Date:      Sat, 23 Jan 2016 23:17:13 -0800
From:      Luigi Rizzo <rizzo@iet.unipi.it>
To:        Marcus Cenzatti <cenzatti@hush.com>
Cc:        "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, Navdeep Parhar <nparhar@gmail.com>
Subject:   Re: solved: Re: Chelsio T520-SO-CR low performance (netmap tested) for RX
Message-ID:  <CA%2BhQ2%2Bhk8JRD8JoQcyn%2BiMEPWtS9YMZaUen=AyBwreEfh_9T1A@mail.gmail.com>
In-Reply-To: <20160124070056.4EC5CA0126@smtp.hushmail.com>
References:  <CA%2BhQ2%2Bg7_haaXLFjMuG00ANsUkFdyGzFQyjT4NYVBmPY-vECBg@mail.gmail.com> <20160124042830.3D674A0128@smtp.hushmail.com> <CA%2BhQ2%2BhxOZkGJdRSrmxSqHforLbMWBVQcayrNFNLLkU803hmjA@mail.gmail.com> <20160124070056.4EC5CA0126@smtp.hushmail.com>

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On Sat, Jan 23, 2016 at 11:00 PM, Marcus Cenzatti <cenzatti@hush.com> wrote:
>
>
> On 1/24/2016 at 3:33 AM, "Luigi Rizzo" <rizzo@iet.unipi.it> wrote:
...

> ok here it is
>
> this lowered pps rate to 9.4Mpps on chelsio (we had 11Mpps with defaul len) and lowered rates to 14Mpps on sender (we had 14.8Mpps before).

see the other email from navdeep, he suggests to try -l 62
because the chelsio saves the packet with a 2-byte offset
into the buffer (it puzzles me a bit that it does so also
in netmap mode though).

cheers
luigi



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