On Thu, Apr 28, 2011 at 09:52:14AM -0700, Jack Vogel wrote: > Adam, > > The TX ring for the legacy driver is small right now compared to em, try > this experiment, > edit if_lem.c, search for "lem_txd" and change EM_DEFAULT_TXD to 1024, see > what > that does, then 2048. > > My real strategy with the legacy code was that it should stable, meaning not > getting > a lot of changes... that really hasn't worked out over time. I suppose I'll > have to try and > give it some tweaks and let you try it. The problem with this code is it > technically supports > a huge range of old stuff we don't test any more, things I do might cause > other regressions :( > > Oh well, let me know if increasing the TX descriptors helps. > > Jack Jack,
Is this the same thing as adjusting these values?: hw.em.rxd=4096 hw.em.txd=4096 If so I've maxed this out and it's not helping. I'll give it a shot on my 8-STABLE box as it has a kernel I can play with. Setting the MTU to 1500 gave lower throughput. -- Adam Stylinski PGP Key: http://pohl.ececs.uc.edu/~adam/publickey.pub Blog: http://technicallyliving.blogspot.com
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