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Debugging via VPN

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The debugger is accessed via Internet/VPN and the performance is very slow. What can be done to improve debug performance?

The main cause for bad debug performance via Internet or VPN are low data throughput and high latency. The ways to improve performance by the debugger are limited:
  • In PRACTICE scripts, use "SCREEN.OFF" at the beginning of the script and "SCREEN.ON" at the end. "SCREEN.OFF" will turn off screen updates. Please note that if your program stops (e.g. on error) without executing "SCREEN.OFF", some windows will not be updated.
  • "SYStem.POLLING SLOW" will set a lower frequency for target state checks (e.g. power, reset, jtag state). It will take longer for the debugger to recognize that the core stopped on a breakpoint.
  • "SETUP.URATE 1.s" will set the default update frequency of Data.List/Data.dump/Variable windows to 1 second (the slowest possible setting).
  • Prevent unneeded memory accesses using "MAP.UPDATEONCE <address_range>" for RAM and "MAP.CONST <address_range>" for ROM/FLASH. Address ranged with "MAP.UPDATEONCE" will read the specified address range only once after the core stopped at a breakpoint or manual break. "MAP.CONST" will read the specified address range only once per SYStem.Mode command (e.g. SYStem.Up).

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Last generated/modified: 20-May-2019