Does changing RP2040 clock speed change file read/write times?

[nateinaction]

Summary

It takes about 170 seconds to load the flight software onto the board with make install. Can it be done faster? We reduce the CPU clock speed on the satellite as a power saving feature, let's see what kind of impact it has on development speed.

Suggested testing methodology

1. Delete all files from the board
2. Use screen to drop into the repl on the board:

screen /dev/tty.usbmodem101

3. Set the clock speed high

machine.set_clock(125000000)  # 125Mhz

4. From your computer, test read/write speed

# cd to the board mount
cd /Volumes/PYSQUARED
# Test board write speed
dd if=/dev/zero of=./test bs=5k count=10 oflag=direct

5. Set clock speed low

machine.set_clock(62500000)  # 62.5Mhz

6. From your computer, test read/write speed

# cd to the board mount
cd /Volumes/PYSQUARED
# Test board write speed
dd if=./test of=/dev/zero bs=5k count=10 oflag=direct

7. Post the results in the issue

Board mount location may differ. You can find out how to find the volume in the README.md.