perlquestion bessarabov <h1>Module to calculate ETA</h1> <p>I have a task that I'm solving. There is a web page that shows the progress of some long lasting process. The process consists of bunch of small tasks. I need to calculate estimated time of process accomplishment.</p> <p>This sound pretty easy. I have start time, I know the number of small tasks that would be done. After complition each small task I can use the simple formula to calculate ETA:</p> <pre><code>estimated_time = number_of_tasks_left * ( ( current_time - start_time ) / number_of_tasks_done ) </code></pre> <p>But I can't imagine that I'm the first who needs such a thing. I've tried to find CPAN module that can solve this kind of problem, but I found noting.</p> <p>Actually there is a great module <a href="https://metacpan.org/module/Term::ProgressBar">Term::ProgressBar</a> that calculated ETA. I use this module in my console scripts and I'm supper happy with it, but I need to calculate ETA and output it on a web page, and for this task this module doesn't suit.</p> <p>Actually I have written a draft of module Time::ETA that will solve my problem (you can see the <a href="https://github.com/bessarabov/Time-ETA/blob/master/examples/simple.pl">working example</a>). But I can't believe that there is no module for this purpose on CPAN.</p> <p>My question — is there some CPAN module that can help me solve my task, or I should complete Time::ETA and upload it to CPAN?</p> <p><b>UPDATE</b>: I've created and released module <a href="https://metacpan.org/module/Time::ETA">Time::ETA</a></p>