Debug the optimal upper-bound performance for swapping (0-cost swapping).

[zhuohan123]

Rerun the experiment comparing 0-cost swapping and recomputation. Recomputation should not be faster in any case. If recomputation is consistently faster, we should debug into this.

[hmellor]

@zhuohan123 is this work still planned or can the issue be closed?

[hmellor]

@WoosukKwon?

[github-actions]

This issue has been automatically marked as stale because it has not had any activity within 90 days. It will be automatically closed if no further activity occurs within 30 days. Leave a comment if you feel this issue should remain open. Thank you!