Optimizing the performance of Princeton University Press’ migration to Drupal 8
Drupal agency EvolvingWeb is back with more performance management expertise. How two lines of code can change the game in migrations.
By Christophe Dujarric, on Dec 04, 2017 Our dear friends @EvolvingWeb really are Blackfire power users. They recently contributed to Blackfire by creating the new Drupal 7 performance recommendations. And now, they saved up to 98% time on content migrations from Drupal 7 to Drupal 8. The Princeton University Press website was their first success there.
Content migration are obviously resources-hungry. Background cron jobs can easily take several hours to complete. Especially if you don’t do it the right way.
That’s where EvolvingWeb has just the right mindset. Don’t trust; measure. And once you get the measurements, don’t just look at high level time consumption. Function/method calls which are executed many times in the same request may be the source of exponential consumption, especially when dealing with large files.
Doing that check may result in a very simple code change, that will save your day.
static $count;
if (is_null($count)) {
$count = $this->doCount();
}
Wonder what that code snippet does? Check out EvolvingWeb’s full article.
Oh, and just for fun, they also found and other 50% improvement. Blackfire helped them realize that using a lower level FTP method would half the import time for a migration.
Have a Drupal site? Subscribe to the Profiler Edition and benefit from EvolvingWeb’s expertise through the Drupal 7 and 8 performance recommendations!
Happy profiling,
