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Message-Id: <1289378956.15004.22.camel@firesoul.comx.local> Date: Wed, 10 Nov 2010 09:49:16 +0100 From: Jesper Dangaard Brouer <jdb@...x.dk> To: Xose Vazquez Perez <xose.vazquez@...il.com> Cc: netdev@...r.kernel.org Subject: Re: Loopback performance from kernel 2.6.12 to 2.6.37 On Tue, 2010-11-09 at 22:35 +0100, Xose Vazquez Perez wrote: > Jesper Dangaard Brouer wrote: > > > To fix this I added "-q 0" to netcat. Thus my working commands are: > > > > netcat -l -p 9999 >/dev/null & > > time dd if=/dev/zero bs=1M count=10000 | netcat -q0 127.0.0.1 9999 > > > > Running this on my "big" 10G testlab system, Dual Xeon 5550 2.67GHz, > > kernel version 2.6.32-5-amd64 (which I usually don't use) > > The results are 7.487 sec: > > netcat flavor ? Debian package netcat-traditional netcat version [v1.10-38] >>From "aptitude show netcat-traditional": This is the "classic" netcat, written by *Hobbit*. It lacks many features found in netcat-openbsd. Didn't know there were that many flavors... > http://nc110.sourceforge.net/ > http://nmap.org/ncat/ > http://www.dest-unreach.org/socat/ > http://cryptcat.sourceforge.net/ > http://netcat.sourceforge.net/ > http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/nc/ -- Med venlig hilsen / Best regards Jesper Brouer ComX Networks A/S Linux Network Kernel Developer Cand. Scient Datalog / MSc.CS Author of http://adsl-optimizer.dk LinkedIn: http://www.linkedin.com/in/brouer -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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