PMASZ

The SQLITE_CONFIG_PMASZ option takes a single parameter which is an unsigned integer and sets the "Minimum PMA Size" for the multithreaded sorter to that integer. The default minimum PMA Size is set by the SQLITE_SORTER_PMASZ compile-time option. New threads are launched to help with sort operations when multithreaded sorting is enabled (using the PRAGMA threads command) and the amount of content to be sorted exceeds the page size times the minimum of the PRAGMA cache_size setting and this value.