Hello, I am trying to configure two identical systems with the following setup.
dom0: Centos 6 OS on Apple Xserve i7 server with PCI cards for 4GB FC (LSI FC949ES) and 10GB Ethernet (Intel 82598EB) dom1: Centos 5 OS with passthru mode of PCI 4GB FC and 10GB Ethernet (ixgbe and mptfc blacklisted in dom0) Everything starts ok, but networking in dom1 using the 10GB interface has extremely high rtt w/ping tests (20-30ms avg). For validation, I have the same card in Dell hosts running Centos 6 natively and they get an avg rtt of .06ms or better. Furthemore the Dell will contact the dom1 but the connection has rtt avg times of about 6ms. With the ethernet interface on the motherboard of the Apple Xserve, I will see rtt times of .06ms within the dom1's, so I think this points to a problem with the Intel card passthru usage, perhaps interrupt handling? or perhaps a problem with the ixgbe driver settings or configuration. I am using the latest available ixgbe driver, version 3.17.3 Do you know if I need to set any special options for the ixgbe driver under libvirt? Does this behaviour sound symptomatic of a specific setting that should be adjusted? TIA, -- Laurence Schuler (Larry) [email protected] Systems Support ADNET Systems, Inc Scientific Visualization Studio http://svs.gsfc.nasa.gov NASA/Goddard Space Flight Center, Code 606.4 phone: 1-301-286-1799 Greenbelt, MD 20771 fax: 1-301-286-1634 Note: I am not a government employee and have no authority to obligate any federal, state or local government to perform any action or payment.FC949ES ------------------------------------------------------------------------------ Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! Discover the easy way to master current and previous Microsoft technologies and advance your career. Get an incredible 1,500+ hours of step-by-step tutorial videos with LearnDevNow. Subscribe today and save! http://pubads.g.doubleclick.net/gampad/clk?id=58040911&iu=/4140/ostg.clktrk _______________________________________________ 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
