Performance Notes

Tests using simulated PLC and simulated EtherCAT yielded the following (times in us):

Host/CPU I/O cycle[1] I/O Publishing Core/Kernel cycle Core Publishing Cache Notes
auriga / Q6600 CPU 400 50 125-145 38 2x4MB (8MB total)  
dolok / Q8200 CPU 400 90 150-200 85 2x2MB (4MB total) pre-gut-swap
delek / Q6600 CPU 400 50 100 38 2x4MB (8MB total) post-gut-swap

  1. - The simulated I/O cycle is intentionally lengthened to match the I/O time of the hardware based EtherCAT module. (Don't use for comparisons.)
  2. - Processor comparison chart at Intel site
  3. - Wikipedia list of Intel CPUs

-- JoeBrandt - 2011-09-27
Topic revision: r3 - 2011-09-28, JoeBrandt
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