Hi, The Rx throughput of 82599 NIC on PCIe Gen1 limits to 6.5 and 7.5Gbps with mtu 1500 and 9000 respectively. On PCIe Gen2 the throughput seems to be ok (reaches line rate). However, I should mention that, I dont have a PCIe Gen2 slot on the same machine but on a different machine with PCIe Gen2 the throughput is good (line rate). Is this a known issue?
Here are the test setup details, Host: Name:dd880-3 CPU: Intel(R) Xeon(R) CPU X7350 @ 2.93GHz, 16 Cores Multithread enabled. Memory: 48GB NIC: 82599 based ninatic card. !!!! dd880-3 YOUR DATA IS IN DANGER !!!! # lspci | grep 82599 15:00.0 Ethernet controller: Intel Corporation 82599EB 10 Gigabit Network Connection (rev 01) 15:00.1 Ethernet controller: Intel Corporation 82599EB 10 Gigabit Network Connection (rev 01) 16:00.0 Ethernet controller: Intel Corporation 82599EB 10 Gigabit Network Connection (rev 01) 16:00.1 Ethernet controller: Intel Corporation 82599EB 10 Gigabit Network Connection (rev 01) Driver: !!!! dd880-3 YOUR DATA IS IN DANGER !!!! # ethtool -i eth2 driver: ixgbe version: 2.0.38.2-NAPI firmware-version: 0.9-3 bus-info: 0000:15:00.0 PCIe: Gen 1, x8 Linux : 2.6.23.17 Client: Name: dd690-108 Mem: 16GB CPU:Intel(R) Xeon(R) CPU X5355 @ 2.66GHz, 8cores, multithread enabled. NIC: non-intel !!!! dd690-108 YOUR DATA IS IN DANGER !!!! # lspci | grep T310 08:00.0 Ethernet controller: Chelsio Communications Inc T310 10GbE Single Port Adapter Driver: !!!! dd690-108 YOUR DATA IS IN DANGER !!!! # ethtool -i eth2 driver: cxgb3 version: 1.2 firmware-version: T 7.1.0 TP 1.1.0 bus-info: 0000:08:00.0 PCIe: Gen1, x8 Linux: 2.6.23.17 I ran perf to get the throughput, iper -s at host (dd880-3) iperf -c at client (dd690-108) TCP window size is 256K at both server and clients. The throughput is as below, streams Throughput(Gbps) mtu 1 6.88 1500 2 6.84 1500 4 6.79 1500 8 6.69 1500 16 1.56 1500 (cpu6 maxouts at 100%softirq) 1 7.56 9000 2 7.55 9000 4 7.50 9000 8 7.45 9000 16 7.41 9000 Does anybody see something similar, am I missing any configuration set up over here.. Any help is greatly appreciated! Thanks, Lakshmana ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ E1000-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/e1000-devel
