View source
<p>These options affect migration processes:</p>
<dl>
<dt>Display timers when processing</dt>
<dd>When developing large, complex migration processes (where you are implementing
your own hooks), it's important to optimize processing as best you can. To help
diagnose performance problems, enable this checkbox to display cumulative
timers upon completion of an interactive migration. The migrate module's own
hooks use Drupal's timer_start() and timer_stop() functions to track their timing -
you can also add these calls to your own hooks.</dd>
<dt>Cache content set counts</dt>
<dd>With large amounts of data, particularly when your source views join
multiple tables, loading the Dashboard page can become quite slow populating
the <strong>Rows in set</strong> column. Checking this box saves the current
row count in the database, and the dashboard will retrieve this value rather than
recounting the rows every time. To update the counts, return to the settings page,
check the <strong>Refresh cached content set counts</strong> toggle, and Submit.</dd>
<dt>Ignore missing advanced help module</dt>
<dd>Checking this toggle disables messages displayed when the advanced help module
is not active. If you're reading this advanced help page, this toggle is
irrelevant to you.</dd>
</dl>
