benchmark: include ascii to fs/readfile

PR-URL: #54988 Reviewed-By: Daniel Lemire <[email protected]> Reviewed-By: Raz Luvaton <[email protected]> Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Benjamin Gruenbaum <[email protected]> Reviewed-By: Chemi Atlow <[email protected]>

Author: RafaelGSS

benchmark/fs/readFileSync.js

@@ -4,7 +4,7 @@ const common = require('../common.js');
 constfs=require('fs');
 
 constbench=common.createBenchmark(main,{
-encoding: ['undefined','utf8'],
+encoding: ['undefined','utf8','ascii'],
 path: ['existing','non-existing'],
 hasFileDescriptor: ['true','false'],
 n: [1e4],

benchmark/fs/readfile.js

@@ -12,7 +12,7 @@ const filename = tmpdir.resolve(`.removeme-benchmark-garbage-${process.pid}`);
 
 constbench=common.createBenchmark(main,{
 duration: [5],
-encoding: ['','utf-8'],
+encoding: ['','utf-8','ascii'],
 len: [1024,16*1024*1024],
 concurrent: [1,10],
 });