[Beowulf] Performance tuning for Jumbo Frames
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Rahul Nabar rpnabar at gmail.comWed Dec 16 08:02:29 PST 2009
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On Tue, Dec 15, 2009 at 10:41 PM, Patrick Geoffray <patrick at myri.com> wrote: > Bogdan Costescu wrote: > So, instead of requiring ~4K per port minimum, you need about ~20K per port. > Add to that up to 8 priorities with DCB and the buffering requirement are > quickly getting out of hand. That's one big drawbacks of large MTUs, along > with contention with wormhole switching. On closer investigation I am seeing TXPause frames and dropped packets. Have to dig deeper into this.Gotta figure out how much RAM per port this switch has. -- Rahul
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