Re: Throughput problems on high latency link

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Look here for some useful information.

http://www.csm.ornl.gov/~dunigan/net100/

On Wed, 2005-06-22 at 13:37 -0400, Bill Davidsen wrote:
> I'm trying to find some better docs on getting throughput up on a high 
> latency link. I have multiple machines, and the local link runs at 
> ~7500kB/s all the time. The remote runs about half that on the same 
> hardware. The docs I googled are all over five years old, and may be 
> incomplete for current kernels.
> 
> I increased memory sizes in net/core/*mem* and rmem-* wmem_* in ipv4, as 
> well as changing the thp_adv_win_scale. Looking at the traces, it 
> appears that the number of packets in flight are increasing, but the 
> throughput is still low.
> 
> Any pointers, examples of working changes, or thoughts would be helpful.
> 
-- 
Lawrence MacIntyre     865.574.8696     macintyrelp@xxxxxxxx
               Oak Ridge National Laboratory
Cyber Security and Information Infrastructure Research Group
               AKO: lawrence.macintyre@xxxxxxxxxxx
           SIPRNet: macintyrelp@xxxxxxxxxxxxxxxxx

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