benchmark,tools: use os.availableParallelism()

Refs: nodejs/node#45895

Author: deokjinkim

benchmark/_http-benchmarkers.js

@@ -65,7 +65,7 @@ class WrkBenchmarker {
     const args = [
       '-d', duration,
       '-c', options.connections,
-      '-t', Math.min(options.connections, require('os').cpus().length || 8),
+      '-t', Math.min(options.connections, require('os').availableParallelism() || 8),
       `${scheme}://127.0.0.1:${options.port}${options.path}`,
     ];
     for (const field in options.headers) {

tools/build-addons.mjs

@@ -11,7 +11,7 @@ import os from 'node:os';
 
 const execFile = util.promisify(child_process.execFile);
 
-const parallelization = +process.env.JOBS || os.cpus().length;
+const parallelization = +process.env.JOBS || os.availableParallelism();
 const nodeGyp = process.argv[2];
 const directory = process.argv[3];