diff --git "a/\346\236\227\350\276\211\346\273\241/3.2/1.js" "b/\346\236\227\350\276\211\346\273\241/3.2/1.js"
new file mode 100644
index 0000000000000000000000000000000000000000..91e85d5f94cceabeb2768abfe5250c0872246377
--- /dev/null
+++ "b/\346\236\227\350\276\211\346\273\241/3.2/1.js"
@@ -0,0 +1,17 @@
+let fs = require("fs");
+
+let a = fs.openSync('./Flie/1.txt','w');
+
+for(let i = 0; i<5000000;i++){
+    fs.writeSync(a,'la-')
+}
+fs.closeSync(a);
+
+let os = require("os");
+
+let now = os.freemem();
+
+let writeStream=fs.createWriteStream('./Flie/1.txt','utf-8');
+
+let after = os.freemem(); 
+console.log((now-after));
\ No newline at end of file
diff --git "a/\346\236\227\350\276\211\346\273\241/3.2/Flie/1.txt" "b/\346\236\227\350\276\211\346\273\241/3.2/Flie/1.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391