Date: Wed, 20 Jul 2011 21:32:27 +0200 From: Eduardo Morras <nec556@retena.com> To: "Michael W. Lucas" <mwlucas@blackhelicopters.org> Cc: questions@freebsd.org Subject: Re: em0 NIC slow on 8.2-p1 amd64? Message-ID: <4D301C9702145855@> (added by postmaster@resmaa12.ono.com) In-Reply-To: <20110720191640.GA42821@bewilderbeast.blackhelicopters.org> References: <20110720160432.GA41775@bewilderbeast.blackhelicopters.org> <4D6348DC01B1E406@> <20110720191640.GA42821@bewilderbeast.blackhelicopters.org>
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At 21:16 20/07/2011, Michael W. Lucas wrote: >It's at gigabit: > >em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 > >options=219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC> > ether 00:15:17:31:c8:fe > inet xxxxxxx > media: Ethernet autoselect (1000baseT <full-duplex>) > status: active All seems to be ok, try a netstat -I em0 -d (it's a capital 'i') to get statistics. If too much packets are dropped recheck cables. Other options: a) 30 MB/s looks very strange, do you have pf or similar with a filter rule? b) Have you checked your disk i/o performance? c) If you generate the data dinamically, may be your producer app is the problem. About the em specific problem under 8.2 you cite, others can guide better than me. HTH >Thanks, >==ml
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