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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