Merge pull request #134 from mapbox/fixshards

Round the number of threads to use down to a power of 2
2026-10-02 16:35:40 +02:00 · 2015-12-22 10:35:22 -08:00
parent fee18cc31e edd325e338
commit a9ad1d99df
1 changed files with 3 additions and 0 deletions
@@ -70,6 +70,9 @@ void init_cpus() {
 		CPUS = 1;
 	}

+	// Round down to a power of 2
+	CPUS = 1 << (int) (log(CPUS) / log(2));
+
 	TEMP_FILES = 64;
 	struct rlimit rl;
 	if (getrlimit(RLIMIT_NOFILE, &rl) != 0) {