How many temporary files will be deleted on every cron run?

Question

I was just wondering if anyone knew how many files the Drupal cron removes from your tmp/ directory per cron run? Is it limited to 100 at a time? Where can I see this information?

Answer 1

Yes, the query is set to 100 items per cron run. You can see the associated code for it in file_cron().

$fids = Drupal::entityQuery('file')
  ->accessCheck(FALSE)
  ->condition('status', FILE_STATUS_PERMANENT, '<>')
  ->condition('changed', REQUEST_TIME - $age, '<')
  ->range(0, 100)
  ->execute();