Re: HEADS-UP: IFLIB implementations of sys/dev/e1000 em, lem, igb pending

From: Olivier Cochard-Labbé <olivier_at_freebsd.org>
Date: Tue, 24 Jan 2017 07:31:05 +0100
On Tue, Jan 24, 2017 at 2:40 AM, Sean Bruno <sbruno_at_freebsd.org> wrote:

>
>
> Which set of configs from your test suite are you using for this?
> Specifically, what packet size are you slamming across?
>
> https://github.com/ocochard/netbenches/tree/master/pktgen.configs
>

​Because I'm in the point of view of a Telco, I'm measuring the «worst»
case, this mean with the smallest frame size.
Here is the exact pkt-gen command line I'm using:
- 60 byte Ethernet frame size (excluding the 4 CRC bytes)
- 2000 UDP flows (20 IP sources * 100 IP destinations)

pkt-gen -U -i igb2 -f tx -n 80000000 -l 60 -d
198.19.10.1:2000-198.19.10.20 -D 00:0d:b9:41:ca:3d -s
198.18.10.1:2000-198.18.10.100 -w 4

​Option -U is available on a patched netmap version [1]: It fix the
checksum calculation when using source/destination IP range on NIC that
didn't enable HW CHKSUM in netmap mode and IPv6 support.

[1]
https://github.com/ocochard/BSDRP/blob/master/BSDRPcur/patches/freebsd.pkt-gen.ae-ipv6.patch
Received on Tue Jan 24 2017 - 05:39:08 UTC

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