Subject: Re: 2.6.17 regression: Very slow net transfer from some hosts

From: Daniel Drake <[email-masked]>
Date: Tue, 11 Apr 2006 21:53:12 +0100

John Heffner wrote:
>> tcp_wmem: 4096    16384   131072
>> tcp_rmem: 4096    87380   174760
>> tcp_mem: 98304   131072  196608
> 
> These are (I assume) with the patch reversed.  What are the values with 
> the patch applied?

Yes- that was on a good kernel, with the patch reversed.

On a bad kernel, with the patch applied (2.6.16-git16):

tcp_wmem: 4096    16384   4194304
tcp_rmem: 4096    87380   4194304
tcp_mem: 98304   131072  196608

They seem to be identical, which makes sense, since most websites work 
just fine.

I am sending tcpdump's privately to you and Stephen. If anyone else 
wants to see them, just ask.

Daniel