Re: Ethernet bridge performance

[Felix Radensky <felix@allot.com>]

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It's 2.4.22-pre8. I have to work with 2.4, 2.6 is not an option
at this point.

Felix.

Stephen Hemminger wrote:

>What kernel version?  2.6 should be faster.
>
>On Thu, 07 Aug 2003 12:12:07 +0300
>Felix Radensky <felix@allot.com> wrote:
>
>  
>
>>Hi,
>>
>>I'm evaluating a performance of a dual port ethernet bridge, and the
>>results are a bit disappointing. I would appreciate any hints on improving
>>the results.
>>
>>I'm using a Dual Xeon 2.66 GHz box based on Intel  5701 chipset with  1G
>>of RAM. NICs are e1000 82546 connected to PCIX bus. Kernel is 2.4.22-pre8,
>>e1000  driver version 5.1.13-k1 with NAPI support. NICs' interrupts are 
>>bound
>>to CPU0.
>>
>>The test consists of sending 200 byte UDP packets from 2 ports of Gigabit
>>IXIA traffic generator to 2 bridge ports. The bridge is capable to sustain
>>the rate of ~170000 pps from each IXIA port without drops. I was
>>expecting it to be able to do at least 250000 pps (our own bridge code 
>> based
>>on 2.2.x kernel sustains ~266000 pps on the same hardware).
>>e1000 driver drops 0 packets, all drops occur at higher level.
>>
>>The output of oprofile attached. I'd be happy to provide any info you may
>>need.
>>
>>Thanks in advance for your help.
>>
>>Felix.
>>
>>    
>>
>
>  
>


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