On 12/04/2012 05:27 PM, Skidmore, Donald C wrote: >> -----Original Message----- >> From: Ben Greear [mailto:[email protected]] >> Sent: Tuesday, December 04, 2012 5:19 PM >> To: e1000-devel list >> Subject: [E1000-devel] Question on ixgbe and bus speed/width. >> >> I'm testing a 4 port 10G NIC (ixgbe) in a pci-e gen3 motherboard. >> >> On most boots, all 4 ports show 5GT/s x8 bus, but on at least one boot, two >> of the NICs came up as 5GT/s and x4. It took a long time to notice this was >> the problem that caused poor performance. >> >> Is there a way in ethtool, or another standard-ish way to query the bus >> speed and width? >> >> >> Thanks, >> Ben > > Looking for something like 'lspci -vv'?
That shows some 'Capabilities' mentioning 5GT/s, but is that just what the NIC is theoretically capable of, or it's current negotiated speed? Thanks, Ben > > Thanks, > -Don Skidmore <[email protected]> > -- Ben Greear <[email protected]> Candela Technologies Inc http://www.candelatech.com ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ E1000-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
