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— 20b:jtag_race_results [2008/07/28 18:31] (current)
newell created
Line 1: Line 1:
 +File transfer speed tests
  
 +OpenOCD r520, parport vs. USB JTAG adapters
 +
 +Downloading 128kB from PC to HP20B
 +
 +^Adapter    ^DCC enabled?     ^jtag_speed       ^Elapsed time^
 +|evb_lm3s811   |no   |0x80    |79.78s |
 +|evb_lm3s811   |no   |0x40    |42.56s |
 +|evb_lm3s811   |no   |0x20    |23.84s |
 +|evb_lm3s811   |no   |0x10    |14.66s |
 +|evb_lm3s811   |no   |0x8    |10.05s |
 +|evb_lm3s811   |no   |0x4    |9.52s |
 +|evb_lm3s811   |no   |0x2    |7.19s |
 +|evb_lm3s811   |no   |0x1    |6.53s |
 +|evb_lm3s811   |no   |0x0    |5.91s |
 +|evb_lm3s811   |yes   |0x80    |20.44s |
 +|evb_lm3s811   |yes   |0x40    |18.61s |
 +|evb_lm3s811   |yes   |0x20    |9.70s |
 +|evb_lm3s811   |yes   |0x10    |5.22s |
 +|evb_lm3s811   |yes   |0x8    |3.03s |
 +|evb_lm3s811   |yes   |0x4    |1.88s |
 +|evb_lm3s811   |yes   |0x2    |1.42s |
 +|evb_lm3s811   |yes   |0x1    |1.23s |
 +|evb_lm3s811   |yes   |0x0    |1.02s |
 +|wiggler      |no    |0x8    |136.69s |
 +|wiggler      |no    |0x4    |76.20s |
 +|wiggler      |no    |0x2    |46.27s |
 +|wiggler      |no    |0x1    |31.48s |
 +|wiggler      |no    |0x0    |16.73s |
 +|wiggler      |yes    |0x8    |70.56s |
 +|wiggler      |yes    |0x4    |39.48s |
 +|wiggler      |yes    |0x2    |23.78s |
 +|wiggler      |yes    |0x1    |16.16s |
 +|wiggler      |yes    |0x0    |8.40s |
 +
 +
 +Uploading 128kB from HP20B to PC
 +
 +^Adapter       ^jtag_speed       ^Elapsed time^
 +|evb_lm3s811   |0x80    |81.12s |
 +|evb_lm3s811   |0x40    |44.52s |
 +|evb_lm3s811   |0x20    |26.08s |
 +|evb_lm3s811   |0x10    |15.52s |
 +|evb_lm3s811   |0x8    |11.61s |
 +|evb_lm3s811   |0x4    |8.91s |
 +|evb_lm3s811   |0x2    |8.36s |
 +|evb_lm3s811   |0x1    |8.19s |
 +|evb_lm3s811   |0x0    |7.78s |
 +|wiggler       |0x1     |33.98s |
 +|wiggler       |0x0     |18.97s |
 +
 +Conclusions?  USB adapters are much quicker, especially on a slow PC such as mine.
 +OpenOCD's DCC download option gives a nice speed boost.
20b/jtag_race_results.txt · Last modified: 2008/07/28 18:31 by newell

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