Date: Fri, 22 Aug 2008 21:01:06 -0700 From: Sam Leffler <sam@freebsd.org> To: pyunyh@gmail.com Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/dev/bfe if_bfe.c if_bfereg.h Message-ID: <48AF8B82.8050509@freebsd.org> In-Reply-To: <20080823023539.GD9758@cdnetworks.co.kr> References: <200808220647.m7M6lAeL097786@repoman.freebsd.org> <48AEE7B5.7090700@freebsd.org> <20080823023539.GD9758@cdnetworks.co.kr>
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Pyun YongHyeon wrote:
> On Fri, Aug 22, 2008 at 09:22:13AM -0700, Sam Leffler wrote:
> > Pyun YongHyeon wrote:
> > >yongari 2008-08-22 06:46:55 UTC
> > >
> > > FreeBSD src repository
> > >
> > > Modified files:
> > > sys/dev/bfe if_bfe.c if_bfereg.h
> > > Log:
> > > SVN rev 181994 on 2008-08-22 06:46:55Z by yongari
> > >
> > > Add a new sysctl node 'dev.bfe.N.stats' that shows various MAC
> > > counters for Rx/Tx statistics. Various counters in ifnet is also
> > > updated with these hardware counters.
> > >
> > >
> > Can we not add stuff like that spews output to the console? I much
> > prefer to see a tool that dumps the stats and if you need to get to them
> > w/o the tool then consider adding a ddb cmd. We're just about to get
> > the ability to add ddb cmds in loadable modules which was the only
> > reason not to leverage ddb for stuff like this.
> >
>
> That would be one of possible approach. Thanks for the pointer.
>
>
John Baldwin corrected my mis-thinking. I was thinking we could use a
ddb command to send output to a terminal but it'll only go to a
console. Another possible approach is to use dtrace but that's probably
less-likely to be configured into a kernel so I'm not sure which way is
best. Ideally we'd have a framework for drivers to report statistics
through a standard interface like netstat but that's not there (yet).
Sam
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