Date: Sun, 21 Jun 2009 22:22:12 +0200 (CEST) From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> To: =?ISO-8859-15?Q?Dag-Erling_Sm=F8rgrav?= <des@des.no> Cc: freebsd-hackers@freebsd.org Subject: Re: is RTL8139 THAT bad? Message-ID: <alpine.BSF.2.00.0906212219190.77226@wojtek.tensor.gdynia.pl> In-Reply-To: <86eitdy4hl.fsf@ds4.des.no> References: <alpine.BSF.2.00.0906211709420.1184@wojtek.tensor.gdynia.pl> <86eitdy4hl.fsf@ds4.des.no>
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> Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> writes: >> Why it's THAT bad? > > http://svn.freebsd.org/base/head/sys/pci/if_rl.c > > Scroll down past the copyright, license and attribution. Read the > 38-line comment that explains just how crappy this chip really is. Well - really "low end". But - this computer can do memcpy at 80MB/s, so at 3.5MB/s it should be 5% CPU for memcpy, and one interrupt per one packet (2500 packets/s). Is something more that make it consume >50% CPU?
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