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JLS2009: Generic receive offload

JLS2009: Generic receive offload

Posted Nov 5, 2009 8:13 UTC (Thu) by RamiRosen (subscriber, #37330)
Parent article: JLS2009: Generic receive offload

>With packet size capped at 1500 bytes, a 10G network link running at full >speed will be transferring over 800,000 packets per second.

Is it accurate ?

a simple calculation :
1000000000/1500=
666,666

Rami Rosen


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JLS2009: Generic receive offload

Posted Nov 6, 2009 19:33 UTC (Fri) by ollibolli (guest, #61845) [Link]

One 1500 byte packet: 64 bits preamble + 14*8 bits Ethernet header + 1500*8 bits payload + 32 bits FCS + 96 bits interframe gap = 12304 bits
10Gbit/s = 10000000000bits/s
10000000000bits/s / 12304bits/pkt = 812743 pkt/s
Data bits might not translate one-to-one into bits on the media so the actual packet rate might be slightly smaller.


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