netdev - Re: nicstat

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Message-ID: <20070714134355.GA11022@infradead.org>
Date:	Sat, 14 Jul 2007 14:43:55 +0100
From:	Christoph Hellwig <hch@...radead.org>
To:	James Morris <jmorris@...ei.org>, Tim.Cook@....com
Cc:	netdev@...r.kernel.org
Subject: Re: nicstat

On Sat, Jul 14, 2007 at 09:28:50AM -0400, James Morris wrote:
> This might be of interest (there's a Linux version):
> 
> http://blogs.sun.com/timc/entry/nicstat_the_solaris_network_monitoring

The code has a comment:

 * CAVEATS
 *	It appears there is no way to determine the speed of an interface
 *	in Linux, so the %Util numbers are bogus at present.

Which is not true.  This is easily retriviable through ethtool for any
driver supporting it.

Aso I'm a bit surprised that a

"extern int errno;"

still works with a modern libc, folks please always include errno.h instead.
Same for the opt* variables for getopt, please always get them through
unistd.h
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