Could not create new article in a big database

Greeting,

I had the matter with SPIP 2.1.13 that contains over 120 000 articles.

I tried to create a new artcile. After pressing « Submit » button , I’ve got a blank screen and nothing more.
I’d checked the error_log and had seen the error

PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 32 bytes) in /ecrire/req/mysql.php on line 500, referer: http://www.domain.com/ecrire/?exec=articles_edit&new=oui

After it I’d comment the following strings in /ecrire/action/editer_article.php in function insert_article

/*
pipeline(‹ post_insertion ›,array(‹ args › => array(‹ table › => ‹ spip_articles ›,‹ id_objet › => $id_article),‹ data › => $champs));
*/

And article creation began to work.

I have the only question - what I’ve done and what will be the result of my code modification? )))

Best regards,
Serge