Manual:$wgAntiLockFlags/pt-br

Detalhes
Flags anti-bloqueio. Este é um campo de bits. As constantes estão definidas Defines.php.
 * ALF_PRELOAD_LINKS : Links de pré-carga durante a atualização do link para salvar.  (Essa opção não tem efeito desde a versão 1.6.0) 
 * ALF_PRELOAD_EXISTENCE : Preload cur_id during replaceLinkHolders. (This option has no effect since 1.5.0)
 * ALF_NO_LINK_LOCK : Don't use locking reads when updating the link table. This is necessary for wikis with a high edit rate for performance reasons, but may cause link table inconsistency. (This option was introduced in 1.5.0)
 * ALF_NO_BLOCK_LOCK : As for ALF_LINK_LOCK, this flag is a necessity for high-traffic wikis. (This option was introduced in 1.5.0 and has no effect since 1.18.0)

Exemplo
To reduce lock contention, at the expense of introducing occasional inconsistencies, set: