For any script that takes more than just a few seconds to run, it’s always a good idea to track the runtime itself. This is especially useful in the development stage, but it can also be a valuable resource for production scripts that are modified over time. You’d want to know if a recent change doubles your runtime, so maybe you can look for an alternative method. Here’s how:
#!/usr/bin/perl -w# This variable holds the current time #local $now = time;# Script processing goes here #sleep 10;# Calculate total runtime (current time minus start time) #$now = time - $now;# Print runtime #printf("
Total running time: %02d:%02d:%02d
", int($now / 3600), int(($now % 3600) / 60), int($now % 60));exit;From here, you can keep a watchful eye on your scripts as they exit, or you can log these times to a file, and only look at them when you’re wondering what’s been taking so long. Knowing your runtimes helps to prevent inefficient code, and allows you to calculate larger batches.
Charlie has over a decade of experience in website administration and technology management. As the site admin, he oversees all technical aspects of running a high-traffic online platform, ensuring optimal performance, security, and user experience.
