On Fri, May 29, 2015 at 3:53 PM, Grant Zhang <gzh...@fastly.com> wrote: > Hi Neal, > > I will be more happy to test the patch. Please send it my way.
Great. Thank you so much for being willing to do this. Attached is a patch for testing. I generated it and tested it relative to Linux v3.14.39, since your stack trace seemed to suggest that you were seeing this on some variant of v3.14.39. (Newer kernels would need a slightly different patch, since the reneging code path has changed a little since 3.14.) Can you please try it out and see if it makes that warning go away? Also, I would be interested in seeing the value of your TcpExtTCPSACKReneging counter, and some sense of how fast that value is increasing, on a machine that's seeing this issue: nstat -z -a | grep Reneg Thanks! neal
0001-RFC-for-tests-on-v3.14.39-tcp-resegment-skbs-that-we.patch
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