>as close to wirespeed as possible, be happy with a C2758. ? >
>Very That C2758 has nice specs and should be able to keep up, however there seems to be a throughput problem on at least one brand of board running the C2758. (I think it’s more a problem with the nics than the cpu) I recently tested various nics and cpus to see if the systems I was building could reach Gigabit Ethernet's max throughput of 1.488Mpps on one port. Tests were run on AMD FM1+ and AM1 APUs, an FX-4100, and an Intel i5-2400 Sandy Bridge. Tests used the BSD Router Project (BSDRP) OS, and a program named 'pkt-gen'. During routing tests, I found that an AMD A8-7600 Kaveri was the only cpu I had that was equal in performance to the Intel i5-2400. (the routing tests involved a 3rd test machine, and aren't covered in the scores below) Anyway, I hope you find this helpful... In these tests, I used the two fastest test machines connected to each other. One sends, and one receives: Realtek 8169sc 32-bit PCI card 266935 pps (283752 pkts in 1063001 usec) Speed: 267.19 Kpps Bandwidth: 128.25 Mbps (raw 179.55 Mbps) Realtek RTL8111DL, Onboard 405708 pps (406113 pkts in 1000998 usec) Speed: 404.78 Kpps Bandwidth: 194.29 Mbps (raw 272.01 Mbps) Intel pro 1000 32-bit PCI card 307102 pps (307586 pkts in 1001577 usec) Speed: 276.49 Kpps Bandwidth: 132.72 Mbps (raw 185.80 Mbps) Intel Pro 1000, x1 PCI-e card (no heatsink) 1367299 pps (1453440 pkts in 1063001 usec) Speed: 1.36 Mpps Bandwidth: 654.85 Mbps (raw 916.79 Mbps) Intel Pro 1000, x1 PCI-e card, server version (with heatsink) 1488012 pps (1490981 pkts in 1001995 usec) Speed: 1.49 Mpps Bandwidth: 714.23 Mbps (raw 999.92 Mbps) Intel PRO/1000 PT, Dual Port, 4x PCI-e, Server Adapter (with heatsink) 1488012 pps (1490981 pkts in 1001995 usec) Speed: 1.49 Mpps Bandwidth: 714.23 Mbps (raw 999.92 Mbps) *************************************************************** These tests were using the lowest TDP(watt) APUs I had. The Intel server nics were the fastest nics tested, and used the least cpu time, so I used those in these tests: AMD 5150 quad core APU @ 1.6GHz Intel PRO/1000 PT, Dual Port, 4x PCI-e, Server Adapter (with heatsink) 1179367 pps (1180530 pkts in 1000986 usec) Speed: 1.17 Mpps Bandwidth: 562.85 Mbps (raw 787.99 Mbps) AMD 5350 quad core APU @ 2GHz Intel PRO/1000 PT, Dual Port, 4x PCI-e, Server Adapter (with heatsink) 1488106 pps (1489615 pkts in 1001014 usec) Speed: 1.48 Mpps Bandwidth: 709.33 Mbps (raw 993.07 Mbps) AMD 5350 quad APU @ 2GHz Onboard RTL8111/8168B PCI Express Gigabit Ethernet controller 560938 pps (561565 pkts in 1001117 usec) Speed: 558.35 Kpps Bandwidth: 268.01 Mbps (raw 375.21 Mbps) AMD A4-6300 dual core APU @ 3.7GHz Intel PRO/1000 PT, Dual Port, 4x PCI-e, Server Adapter (with heatsink) 1129784 pps (1130961 pkts in 1001042 usec) Speed: 1.09 Mpps Bandwidth: 521.00 Mbps (raw 729.39 Mbps)
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