Hi Anna, On Thu, 2012-06-28 at 08:32 +0000, Fischer, Anna wrote: > Hi, I'm running a 10G 82599 controller in PCI SR-IOV mode, and the VF is > assigned to a VM (PCI pass-through). I only enable a single VF (max_vfs=1). > On my machine I run KVM and just a single VM. > The machine has 4 Xeon X5550 cores. > > I've tested RX and TX throughput using iperf (TCP). Basically I want to see > how fast I can send and receive packets to/from the VM.
How many CPU's are provisioned to your VM? Also, what packet size are you using with iperf? In many cases, a single Rx/Tx queue pair is not enough to run 10GbE line rate. -PJ > TX performance comes to about 8.5Gbps. At that point, CPU is maxed out. > > RX performance only comes to about 5.5Gbps. CPU isn't maxed out at all, and I > wonder, if this is the expected RX throughput? I have to say that I only run > a single TX queue and a single RX queue. (I am testing against something else > that also just runs a single queue, so I need to keep it fair.) I haven't > tuned any OS parameters, I run Fedora Core 16 and a 3.4 Linux kernel. > > Thanks, > Anna > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > 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 ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ 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
