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SAS7BDAT parser: Speed up RLE/RDC decompression #47405

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merged 22 commits into from
Oct 3, 2022
Merged

SAS7BDAT parser: Speed up RLE/RDC decompression #47405

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0e02b8d
Speed up RLE/RDC decompression
jonashaag Jun 15, 2022
eca0db4
Update tests
jonashaag Jun 17, 2022
041a04b
ssize_t -> size_t
jonashaag Jun 20, 2022
0451c31
Merge branch 'main' into sas/decompress3
jonashaag Jun 26, 2022
f2c8b0e
Update sas.pyx
jonashaag Jun 26, 2022
17c72f8
Merge branch 'main' into sas/decompress3
jonashaag Jul 2, 2022
91f8436
Merge branch 'main' into sas/decompress3
jonashaag Jul 5, 2022
221f20c
Merge branch 'main' into sas/decompress3
jonashaag Jul 6, 2022
213b08f
Don't use null byte as except value
jonashaag Jul 7, 2022
4b24773
Nit
jonashaag Jul 7, 2022
263aea6
Simplify condition
jonashaag Jul 9, 2022
785f752
Review feedback
jonashaag Jul 9, 2022
1f36f99
Docstring -> comment
jonashaag Jul 9, 2022
26aea28
Revert "Simplify condition"
jonashaag Jul 9, 2022
afdfc1c
Merge branch 'main' into sas/decompress3
jonashaag Jul 10, 2022
6a3fd55
Merge branch 'main' into sas/decompress3
jonashaag Aug 8, 2022
fc5621b
Merge branch 'main' into sas/decompress3
jonashaag Aug 29, 2022
0d3daa8
Merge branch 'main' into sas/decompress3
jonashaag Sep 2, 2022
0588d18
Merge branch 'main' into sas/decompress3
jonashaag Sep 15, 2022
21ba0b2
Lint
jonashaag Sep 15, 2022
55cceb7
Speed up some Cython `except`
jonashaag Sep 22, 2022
ba9b019
Typo
jonashaag Sep 22, 2022
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37 changes: 15 additions & 22 deletions asv_bench/benchmarks/io/sas.py
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Original file line number Diff line number Diff line change
@@ -1,30 +1,23 @@
import os
from pathlib import Path

from pandas import read_sas

ROOT = Path(__file__).parents[3] / "pandas" / "tests" / "io" / "sas" / "data"
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IIUC this is a style choice orthogonal to the rest of the PR? no real problem with it, but in general best to minimize these to make it easier to focus on the important bits

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@jonashaag jonashaag Jul 7, 2022 •
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The ASV file would’ve been very confusing if I left the old code because my additions can’t use the old code and then we’d end up with two almost identical but different versions.



class SAS:
def time_read_sas7bdat(self):
read_sas(ROOT / "test1.sas7bdat")

params = ["sas7bdat", "xport"]
param_names = ["format"]
def time_read_xpt(self):
read_sas(ROOT / "paxraw_d_short.xpt")

def setup(self, format):
# Read files that are located in 'pandas/tests/io/sas/data'
files = {"sas7bdat": "test1.sas7bdat", "xport": "paxraw_d_short.xpt"}
file = files[format]
paths = [
os.path.dirname(__file__),
"..",
"..",
"..",
"pandas",
"tests",
"io",
"sas",
"data",
file,
]
self.f = os.path.join(*paths)
def time_read_sas7bdat_2(self):
next(read_sas(ROOT / "0x00controlbyte.sas7bdat.bz2", chunksize=11000))

def time_read_sas(self, format):
read_sas(self.f, format=format)
def time_read_sas7bdat_2_chunked(self):
for i, _ in enumerate(
read_sas(ROOT / "0x00controlbyte.sas7bdat.bz2", chunksize=1000)
):
if i == 10:
break
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