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-rw-r--r--lib/data_parameters.py14
1 files changed, 8 insertions, 6 deletions
diff --git a/lib/data_parameters.py b/lib/data_parameters.py
index 7f7368d..9a6429f 100644
--- a/lib/data_parameters.py
+++ b/lib/data_parameters.py
@@ -117,7 +117,7 @@ class Protolog:
text_{nop,ser,serdes} : whole-program Text Segment (code/Flash) size
"""
- def _mean_cycles(data, key):
+ def _median_cycles(data, key):
# There should always be more than just one measurement -- otherwise
# something went wrong
if len(data[key]) <= 1:
@@ -130,7 +130,9 @@ class Protolog:
# bogus data
if val > 10_000_000:
return np.nan
- return max(0, int(np.mean(data[key][1:]) - np.mean(data['nop'][1:])))
+ # All measurements in data[key] cover the same instructions, so they
+ # should be identical.
+ return max(0, int(np.median(data[key][1:]) - np.median(data['nop'][1:])))
idem = lambda x: x
datamap = [
@@ -138,10 +140,10 @@ class Protolog:
['bss_ser', 'bss_size_ser', idem],
['bss_serdes', 'bss_size_serdes', idem],
['callcycles_raw', 'callcycles', idem],
- ['cycles_ser', 'cycles', lambda x: Protolog._mean_cycles(x, 'ser')],
- ['cycles_des', 'cycles', lambda x: Protolog._mean_cycles(x, 'des')],
- ['cycles_enc', 'cycles', lambda x: Protolog._mean_cycles(x, 'enc')],
- ['cycles_dec', 'cycles', lambda x: Protolog._mean_cycles(x, 'dec')],
+ ['cycles_ser', 'cycles', lambda x: Protolog._median_cycles(x, 'ser')],
+ ['cycles_des', 'cycles', lambda x: Protolog._median_cycles(x, 'des')],
+ ['cycles_enc', 'cycles', lambda x: Protolog._median_cycles(x, 'enc')],
+ ['cycles_dec', 'cycles', lambda x: Protolog._median_cycles(x, 'dec')],
#['cycles_ser_arr', 'cycles', lambda x: np.array(x['ser'][1:]) - np.mean(x['nop'][1:])],
#['cycles_des_arr', 'cycles', lambda x: np.array(x['des'][1:]) - np.mean(x['nop'][1:])],
#['cycles_enc_arr', 'cycles', lambda x: np.array(x['enc'][1:]) - np.mean(x['nop'][1:])],