Created
February 15, 2021 18:41
-
-
Save Weiyuan-Lane/2e1a8a29624849a9b9aa8f3f55705a8f to your computer and use it in GitHub Desktop.
Comparison of file writing strategies
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Write all lines to file at once, mode "w" | |
| 1.651B memsize ( 0.000 retained) | |
| 75.008k objects ( 0.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Write all lines to file at once, mode "a" | |
| 1.651B memsize ( 40.000 retained) | |
| 75.008k objects ( 1.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Write all lines to file at once, mode "w+" | |
| 1.651B memsize ( 40.000 retained) | |
| 75.008k objects ( 1.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Write all lines to file at once, mode "a+" | |
| 1.651B memsize ( 40.000 retained) | |
| 75.008k objects ( 1.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Iterate and write per line to file, mode "w" | |
| 2.009M memsize ( 0.000 retained) | |
| 50.007k objects ( 0.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Iterate and write per line to file, mode "a" | |
| 2.009M memsize ( 0.000 retained) | |
| 50.007k objects ( 0.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Iterate and write per line to file, mode "w+" | |
| 2.009M memsize ( 0.000 retained) | |
| 50.007k objects ( 0.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Iterate and write per line to file, mode "a+" | |
| 2.009M memsize ( 0.000 retained) | |
| 50.007k objects ( 0.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Iterate and write per line to file (manual), mode "w" | |
| 2.009M memsize ( 0.000 retained) | |
| 50.007k objects ( 0.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Iterate and write per line to file (manual), mode "a" | |
| 2.009M memsize ( 40.000 retained) | |
| 50.007k objects ( 1.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Iterate and write per line to file (manual), mode "w+" | |
| 2.009M memsize ( 40.000 retained) | |
| 50.007k objects ( 1.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Iterate and write per line to file (manual), mode "a+" | |
| 2.009M memsize ( 40.000 retained) | |
| 50.007k objects ( 1.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Iterate and write per line to file chunks, mode "w" | |
| 2.870M memsize ( 0.000 retained) | |
| 50.703k objects ( 0.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Iterate and write per line to file chunks, mode "a" | |
| 2.870M memsize ( 40.000 retained) | |
| 50.703k objects ( 1.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Iterate and write per line to file chunks, mode "w+" | |
| 2.870M memsize ( 40.000 retained) | |
| 50.703k objects ( 1.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Iterate and write per line to file chunks, mode "a+" | |
| 2.870M memsize ( 40.000 retained) | |
| 50.703k objects ( 1.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Iterate and write per line to file chunks (manual), mode "w" | |
| 2.870M memsize ( 0.000 retained) | |
| 50.703k objects ( 0.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Iterate and write per line to file chunks (manual), mode "a" | |
| 2.870M memsize ( 40.000 retained) | |
| 50.703k objects ( 1.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Iterate and write per line to file chunks (manual), mode "w+" | |
| 2.870M memsize ( 40.000 retained) | |
| 50.703k objects ( 1.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Iterate and write per line to file chunks (manual), mode "a+" | |
| 2.870M memsize ( 40.000 retained) | |
| 50.703k objects ( 1.000 retained) | |
| 50.000 strings ( 0.000 retained) | |
| Comparison: | |
| Iterate and write per line to file (manual), mode "w+": 2008696 allocated | |
| Iterate and write per line to file (manual), mode "a+": 2008696 allocated - same | |
| Iterate and write per line to file (manual), mode "a": 2008696 allocated - same | |
| Iterate and write per line to file (manual), mode "w": 2008696 allocated - same | |
| Iterate and write per line to file, mode "w": 2008696 allocated - same | |
| Iterate and write per line to file, mode "a": 2008696 allocated - same | |
| Iterate and write per line to file, mode "w+": 2008696 allocated - same | |
| Iterate and write per line to file, mode "a+": 2008696 allocated - same | |
| Iterate and write per line to file chunks (manual), mode "w": 2869720 allocated - 1.43x more | |
| Iterate and write per line to file chunks (manual), mode "a": 2869720 allocated - 1.43x more | |
| Iterate and write per line to file chunks, mode "a+": 2869720 allocated - 1.43x more | |
| Iterate and write per line to file chunks (manual), mode "w+": 2869720 allocated - 1.43x more | |
| Iterate and write per line to file chunks, mode "w": 2869720 allocated - 1.43x more | |
| Iterate and write per line to file chunks, mode "a": 2869720 allocated - 1.43x more | |
| Iterate and write per line to file chunks, mode "w+": 2869720 allocated - 1.43x more | |
| Iterate and write per line to file chunks (manual), mode "a+": 2869720 allocated - 1.43x more | |
| Write all lines to file at once, mode "a+": 1650858087 allocated - 821.86x more | |
| Write all lines to file at once, mode "w+": 1650858087 allocated - 821.86x more | |
| Write all lines to file at once, mode "a": 1650858087 allocated - 821.86x more | |
| Write all lines to file at once, mode "w": 1650858087 allocated - 821.86x more |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment