When asking a customer to enable RSS in their data center to improve network performance (very high UDP packets-per-sec rate), I was told that they generally turn it off, because after various problems in the past, Microsoft and the hardware vendor (which I believe to be HP) would often ask them to turn off RSS, because it may destabilize things.
This tidbit, and the additional observation that although RSS was globally enabled by default in Windows 2008 (I verified this in 2008 R2), in 2012 (verified in 2012 R2) that has been changed to "disabled" by default, lead me to believe there might be some truth to the instability claim. But google doesn't seem to be my friend here. And on the TechNet pages on RSS improvements in Windows 2012, it seems RSS rocks (which my own tests on scaling UDP reception on a very high-spec Win2012R2 system confirmed) and is still the way to scale.
Does anyone here have good/bad experience with RSS and stability to share, or some pointer to problems with it?
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