sending email to 15,000 recipients

[eluser]Unknown[/eluser]
I think your problem is the database query, I had a similar problem dealing with a large data set from the command line. I also had a memory limit of 256mb and it tanked about 11,500. :coolsmile:

CodeIgniter stores all the queries it executes in an array (I think), this is why the memory usage keeps increasing. You can use this:

Code:

$this->database->save_queries = false;

Also check out this _fetch_object discussion: http://ellislab.com/forums/viewthread/129194/

These two changes fixed my problems, good luck!