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Removed default limit of 4

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This commit is contained in:
Andrew Murray 2025-06-25 22:00:36 +10:00
parent ecd264fffc
commit 23ed906b62
2 changed files with 4 additions and 7 deletions
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5
docs/installation/building-from-source.rst
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@ -276,10 +276,9 @@ Build options
* Config setting: ``-C parallel=n``. Can also be given
with environment variable: ``MAX_CONCURRENCY=n``. Pillow can use
multiprocessing to build the extension. Setting ``-C parallel=n``
multiprocessing to build the extensions. Setting ``-C parallel=n``
sets the number of CPUs to use to ``n``, or can disable parallel building by
using a setting of 1. By default, it uses 4 CPUs, or if 4 are not
available, as many as are present.
using a setting of 1. By default, it uses as many CPUs as are present.
* Config settings: ``-C zlib=disable``, ``-C jpeg=disable``,
``-C tiff=disable``, ``-C freetype=disable``, ``-C raqm=disable``,

6
setup.py
View File

@ -28,7 +28,7 @@ while sys.argv[-1].startswith("--pillow-configuration="):
_, key, value = sys.argv.pop().split("=", 2)
configuration.setdefault(key, []).append(value)
default = int(configuration.get("parallel", ["4"])[-1])
default = int(configuration.get("parallel", ["0"])[-1])
ParallelCompile("MAX_CONCURRENCY", default).install()
@ -394,9 +394,7 @@ class pil_build_ext(build_ext):
cpu_count = os.cpu_count()
if cpu_count is not None:
try:
self.parallel = int(
os.environ.get("MAX_CONCURRENCY", min(4, cpu_count))
)
self.parallel = int(os.environ.get("MAX_CONCURRENCY", cpu_count))
except TypeError:
pass
for x in self.feature: