Test JS script file

Selected file: fs-sync.js
Compare console.log() outputs in browser and NodeJS.
Notice: Open browser's console in FireBUG!

  1. 05define_functions.js
  2. 10module_basic1.js
  3. 10module_basic2.js
  4. 10module_basic3.js
  5. 11module_nesting.js
  6. file.js
  7. fs-async.js
  8. fs-async2.js
  9. fs-async3.js
  10. fs-sync.js
  11. fs-sync2.js
  12. http.js
  13. index.html
  14. index.js
  15. my_modules
  16. net.js
  17. npm-debug.log
  18. package.json
  19. promises
  20. socket.js
  21. sys.js
  22. testfiles

..:: Source code - fs-sync.js ::..

/*
This example shows synchronous execution, blocking code.
console.log(contents); blocks process and that's why
console.log('Do something else!'); must wait

Max file that didn't crash nodeJS had 350MB
 */

//load modules
var fs = require('fs');

//synchronous file reading
var content = fs.readFileSync('./testfiles/largefile350mb.txt', 'utf8');
console.log(content);

//here process is blocked while file is not read completely. After that next console.log(); continue

console.log('Do something else!');

/*
Conclusion: Due to asynchronous execution, first is file dumped then appear 'Do something else'.
That's because console.log('Do something else!'); waits fs.readFileSync('largefile350mb.txt', 'utf8'); to be finished.
 */
 

..:: NodeJS Console - fs-sync.js ::..

$ node fs-sync.js 

		
		


		
		
$ps -aux | grep node (list all node processes)
sasa        1194  0.5  0.5 1304004 82836 ?       Ssl  Oct24 487:15 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa        1200  1.0  0.8 11723376 138652 ?     Ssl  Oct24 868:50 node /home/sasa/dex8/dex8-api/starter.js
sasa        1208  0.4  0.4 1305000 73736 ?       Ssl  Oct24 351:27 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1224  0.9  0.6 11830176 111660 ?     Ssl  Oct24 829:55 node /home/sasa/dex8/dex8-www/server/index.js
sasa        1236  0.6  0.6 11811596 99560 ?      Ssl  Oct24 553:34 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1255  0.9  0.5 1330860 83724 ?       Ssl  Oct24 750:57 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa        1257  0.4  0.4 1304920 73888 ?       Ssl  Oct24 357:34 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.4  0.4 1298260 67312 ?       Ssl  Oct24 351:11 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  3.9  2.8 12165032 470132 ?     Rsl  Oct24 3329:14 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1449  0.4  0.3 1233384 65444 ?       Ssl  Oct24 369:25 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1529  0.4  0.3 1100900 64292 ?       Ssl  Oct24 368:49 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1606  0.4  0.3 1100900 65060 ?       Ssl  Oct24 369:51 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1607  0.4  0.3 1100900 65264 ?       Ssl  Oct24 368:39 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1705  0.4  0.4 1101928 66552 ?       Ssl  Oct24 368:10 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1706  0.4  0.3 1101668 65100 ?       Ssl  Oct24 367:32 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1805  0.4  0.4 1168224 67248 ?       Ssl  Oct24 368:43 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1807  0.4  0.3 1100640 64300 ?       Ssl  Oct24 360:05 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1885  0.4  0.3 1100136 64280 ?       Ssl  Oct24 361:52 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1886  2.5  1.0 11871844 174832 ?     Ssl  Oct24 2085:46 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa      400948  0.3  0.4 1102172 67192 ?       Ssl  03:02   1:51 node /home/sasa/dex8/dex8-worker/starter.js
www-data  435073  0.0  0.0   2608   596 ?        S    11:52   0:00 sh -c ps -aux | grep node
www-data  435075  0.0  0.0   3304   712 ?        S    11:52   0:00 grep node
sasa     2628167  1.0  0.8 1175656 132760 ?      Ssl  Nov04 684:08 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.7  0.6 11823824 99332 ?      Ssl  Nov06 495:33 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11798920 83428 ?      Ssl  Nov06 340:05 node /home/sasa/@mikosoft/dodo-examples/server/index.js