[netperf-talk] netperf2.4.4 on linux, socket size issue ?

[Andrew Gallatin]

Rick Jones writes:
 > beginning.  So, while in both cases above, netperf is reporting the same 
 > socket buffer sizes, in one case, Linux has gone behind netperf's back 
 > and ended-up using even larger socket buffers.  This is another in a 
 > series of things where Linux wanted to be different from everyone else 
 > and in so doing changed/violated some basic assumptions about stack 
 > behavour implicit in netperf. (and perhaps other benchmarks too)


I'm not generally a Linux fan, but I'd say the benefits of autotuning
far outweigh the drawbacks.  If the application cares, it can set the
buffer sizes itself.  FWIW, the autotuning has spread to FreeBSD, and
even Solaris is talking about doing it.

Drew