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Date: Tue, 09 Nov 2010 22:35:24 +0100 From: Xose Vazquez Perez <xose.vazquez@...il.com> To: netdev@...r.kernel.org, jdb@...x.dk Subject: Re: Loopback performance from kernel 2.6.12 to 2.6.37 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 ? 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/ -- «Allá muevan feroz guerra, ciegos reyes por un palmo más de tierra; que yo aquí tengo por mío cuanto abarca el mar bravío, a quien nadie impuso leyes. Y no hay playa, sea cualquiera, ni bandera de esplendor, que no sienta mi derecho y dé pecho a mi valor.» -- 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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