From: Waskiewicz J. P. P <pet...@in...> - 2012-06-28 08:45:38
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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 > E10...@li... > https://lists.sourceforge.net/lists/listinfo/e1000-devel > To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired |