Large TCP send socket buffer optimizations

[Andre Guibert de Bruet]

On Mar 1, 2007, at 11:40 AM, Andre Oppermann wrote:
> Andrew Gallatin wrote:
>> Andre Oppermann writes:
>>  > This patch solves the problem by maintaining an offset pointer  
>> in the socket
>>  > buffer to give tcp_output() the closest mbuf right away  
>> avoiding the traversal
>>  > from the beginning.
>>  >  > With this patch we should be able to compete nicely for the  
>> Internet land
>>  > speed record again.
>> Great news.  I will test soon.
>> Have you found the bug which makes a freebsd sender spew
>> duplicate acks?  This will have a negative affect on
>> any benchmarks..
>
> No, not yet.  And my current test environment doesn't lend itself  
> to reproduce
> the bug easily.  I'm very likely to need further input from you and  
> will send
> you some patches for instrumentation in the near future.

Please CC me on the patches. Did you get a chance to check out the  
pcap that I linked to?

Andy

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