Date: Mon, 22 Feb 2016 21:16:04 +0300 From: Slawa Olhovchenkov <slw@zxy.spb.ru> To: Luigi Rizzo <rizzo@iet.unipi.it> Cc: freebsd-current <freebsd-current@freebsd.org> Subject: Re: three new netmap tools: pcap player, link emulator, load distributor Message-ID: <20160222181603.GR68298@zxy.spb.ru> In-Reply-To: <CA%2BhQ2%2Bjdgwo-XqkSza0HNP6yWUoXOOFC2K90y5s%2BG%2BHGrEKsTg@mail.gmail.com> References: <CA%2BhQ2%2Bhma5%2B4a60j1p1bERm6fB0JEY9EKODDfzfMawLjqQhLkA@mail.gmail.com> <20160222121415.GG37895@zxy.spb.ru> <CA%2BhQ2%2Bjdgwo-XqkSza0HNP6yWUoXOOFC2K90y5s%2BG%2BHGrEKsTg@mail.gmail.com>
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On Mon, Feb 22, 2016 at 08:17:06AM -0800, Luigi Rizzo wrote:
> On Monday, February 22, 2016, Slawa Olhovchenkov <slw@zxy.spb.ru> wrote:
>
> > On Sun, Feb 21, 2016 at 10:18:36AM -0800, Luigi Rizzo wrote:
> >
> > > lb
> > > a packet distributor that reads from a netmap port and distributes
> > > traffic to multiple netmap ports, using zero copy and a user-defined
> > > hash function. This will be useful e.g. for people running multiple
> > > instances of traffic monitors such as bro, suricata and the like.
> > > It is not by chance that LB was originally developed by Seth Hall
> > > at Broala, who kindly made it available, and Giuseppe Lettieri who
> > > added a few features.
> >
> > Do you performance test of this tool?
> > In my case, on my hardware similar code can rehash and forward only
> > about 6.5Mpps in one thread.
> >
>
> Well above 15mpps on a Vale switch. The devil is in the details so "similar
> code" may perform wildly differently depending of what you actually do.
Mostly outperformance for me in memory access, for netmap index access
and hashing packet.
> Give this a try and let us know.
I can't compile this.
# cc -o lb lb.c
lb.c:17:10: fatal error: 'ctrs.h' file not found
#include "ctrs.h"
^
1 error generated.
ok, give ctrs.h from netmap/examples/
# cc -o lb lb.c
In file included from lb.c:18:
./lb.h:2:23: error: use of undeclared identifier 'ETH_ALEN'
unsigned char h_dest[ETH_ALEN];
^
./lb.h:3:25: error: use of undeclared identifier 'ETH_ALEN'
unsigned char h_source[ETH_ALEN];
^
2 errors generated.
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