LingaoM opened a new pull request, #18801:
URL: https://github.com/apache/nuttx/pull/18801
Add CONFIG_SIM_WALLTIME_RATIO Kconfig option and --sim-rt-ratio=
command-line argument to control the ratio of simulated time to real time. A
ratio greater than 1.0 speeds up simulated time while a value less than 1.0
slows it down. The default ratio of 1.0 preserves the existing real-time
behavior.
The implementation applies the ratio in host_gettime(), host_sleepuntil()
and host_settimer() so both SIM_WALLTIME_SLEEP and SIM_WALLTIME_SIGNAL modes
are supported.
Tested on sim:nsh with the following sleep test:
$ echo -e "sleep 2\nexit" | time ./nuttx
real 0m2.0xxs
$ echo -e "sleep 2\nexit" | time ./nuttx --sim-rt-ratio=2.0
real 0m1.0xxs
$ echo -e "sleep 2\nexit" | time ./nuttx --sim-rt-ratio=0.5
real 0m4.0xxs
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