Re: [mpls-linux-devel] Fedora x86_64 Kernel

[Chris R. <Chr...@nr...>]

Hello James

Yes it has been a very long time but I've been determined to get time to 
continue the MPLS-linux performance testing over 10GE.

Finally I can report some results but they are not very good.  First, I 
switched to netperf as it provides far better results and seems more 
reliable than iperf.

So here is the layout of the test configuration.

1.  Each host configuration: Dell 860 dual PCIe x8-lane/x4-lane with 
Myricom Gen 2 PCIe 10GE NICs (cards are in x8-lane slot)
2.  Kernel version is:  2.6.29.6-217.2.16.f11 with MPLS-Linux patches
3.  IProute version is:  2.6.29-2.f11 with MPLS-Linux patches
4.  netperf command issued:  netperf -L {local LER IP} -H {target LER IP}
      netserver -L {local LER IP}
5.  Network layout, back-to-back hosts acting as LERs such that:  
LER<---->LER
6.  example MPLS configuration commands issued on both LERs
      mpls labelspace set dev eth{interface to nexthop LER} labelspace 0
      mpls nhlfe add key 0 instructions push gen {label} nexthop 
eth{interface to nexthop LER} ipv4 {necthop IP}
      mpls ilm add label gen {label} labelspace 0
      ip route add {nexthop target subnet IP/mask} via {nexthop IP} mpls 
{key}

Test summary results:

1.  Baseline rates for directly attached interfaces:  9.3G
2.  Baseline rates for VLAN Tagged interface using "interface routes":  9.3G
3.  Baseline rates for non-MPLS routed subnets:  5.0G(plus-or-minus 1G)
3.  Routed IP thru MPLS LSP:  0.45G <------------- less than 1G, this is 
not good

Let me know if there is anything particular you'd like looking into on this.

...Chris