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linktree Topic: Performance with gigabit connections
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Topic: Performance with gigabit connections  (Read 3245 times)
« on: August 22, 2011, 17:49:12 »
jonny *
Posts: 3
After reading the forums and mailing list I did not find any solid answer to what hardware are required to do NAT routing at full gigabit wirespeed. My connection to the internet is 1000base-TX only capped at 100Mbit/s up. Right now I'm testing with m0n0wall 1.8.0b477 installed on a USB stick. CPU is Pentium D 3GHz with 4GB RAM and two Intel PRO/1000 NICs. When doing tests against the swedish site www.bredbandskollen.se the maximum download rate is about 500 MBit/s, if I connect my client computer directly to the internet (no m0n0wall) I get at least 750 Mbit/s running the exact same test. The CPU on my m0n0wall never goes above 25% according to the CPU graph.

Since it would seem like m0n0wall is the cause of the slowdown I did try a iperf test between two Windows machines with m0n0wall in the middle doing NAT, the performance is the same as when the computers are just connected via a switch in the same subnet (about 940 Mbit/s). Am I missing something obvious?
« Reply #1 on: August 26, 2011, 18:57:34 »
notladstyle **
Posts: 53
Thats perplexing... I have a supermicro 1.6ghz atom with 512mb that can saturate its gigabit connection.
« Reply #2 on: August 27, 2011, 20:16:25 »
jonny *
Posts: 3
Have you made any special configuration changes on that box? What version of m0n0wall are you running?
« Reply #3 on: October 10, 2011, 13:51:57 »
ipogko *
Posts: 1
Hi Notladstyle,

How did you config your box? I have the same problem with jonny.


Thanks
~ipogko
 
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