From 441c58b4f878c9957f588106c3c8bb54c04ff409 Mon Sep 17 00:00:00 2001
From: Eric Arellano <14852634+Eric-Arellano@users.noreply.github.com>
Date: Wed, 21 Oct 2020 15:03:13 -0700
Subject: [PATCH] Increase default `[python-setup].resolver_jobs` to `cpu_count
 / 2` (#11006) (#11011)

[ci skip-rust]
[ci skip-build-wheels]
---
 src/python/pants/python/python_setup.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/python/pants/python/python_setup.py b/src/python/pants/python/python_setup.py
index 9bf5dc79640..751b10a1820 100644
--- a/src/python/pants/python/python_setup.py
+++ b/src/python/pants/python/python_setup.py
@@ -2,6 +2,7 @@
 # Licensed under the Apache License, Version 2.0 (see LICENSE).
 
 import logging
+import multiprocessing
 import os
 import subprocess
 from enum import Enum
@@ -168,11 +169,11 @@ def register_options(cls, register):
         register(
             "--resolver-jobs",
             type=int,
-            default=2,
+            default=multiprocessing.cpu_count() // 2,
             advanced=True,
             help=(
                 "The maximum number of concurrent jobs to build wheels with. Because Pants "
-                "can run multiple subprocesses in parallel, the total parallelism will be "
+                "can run multiple subprocesses in parallel, the maximum total parallelism will be "
                 "`--process-execution-{local,remote}-parallelism x --python-setup-resolver-jobs`. "
                 "Setting this option higher may result in better parallelism, but, if set too "
                 "high, may result in starvation and Out of Memory errors."