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tests/README: Update docs for run-perfbench.py now that it uses -t.
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Follow up to dbbc7d9667
Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George
committed by
Angus Gratton
Angus Gratton
parent
5312614974
commit
616f35f7f8
@@ -67,16 +67,14 @@ for a full list of command line options.
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### Benchmarking a target
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To run tests on a firmware target using `pyboard.py`, run the command line like
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To run tests on a firmware target using a serial port, run the command line like
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this:
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```
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./run-perfbench.py -p -d /dev/ttyACM0 168 100
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./run-perfbench.py -t /dev/ttyACM0 168 100
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```
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* `-p` indicates running on a remote target via pyboard.py, not the host.
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* `-d PORTNAME` is the serial port, `/dev/ttyACM0` is the default if not
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provided.
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* `-t PORTNAME` is the serial port to use (and it supports shorthand like `a0`).
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* `168` is value `N`, the approximate CPU frequency in MHz (in this case Pyboard
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V1.1 is 168MHz). It's possible to choose other values as well: lower values
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like `10` will run much the tests much quicker, higher values like `1000` will
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@@ -136,11 +134,11 @@ Usually you want to know if something is faster or slower than a reference. To
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do this, copy the output of each `run-perfbench.py` run to a text file.
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This can be done multiple ways, but one way on Linux/macOS is with the `tee`
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utility: `./run-perfbench.py -p 168 100 | tee pyb-run1.txt`
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utility: `./run-perfbench.py -t a0 168 100 | tee pyb-run1.txt`
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Once you have two files with output from two different runs (maybe with
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different code or configuration), compare the runtimes with `./run-perfbench.py
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-t pybv-run1.txt pybv-run2.txt` or compare scores with `./run-perfbench.py -s
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-m pybv-run1.txt pybv-run2.txt` or compare scores with `./run-perfbench.py -s
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pybv-run1.txt pybv-run2.txt`:
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```
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