https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=30789 --- Comment #1 from Nick Clemens <nick@bywatersolutions.com> --- Created attachment 135071 --> https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=135071&action=edit Bug 30789: Improve performance of AddBiblio AddBiblio calls TransformMarcRecordToKoha. We are only interested in getting biblio and biblioitems info, so we can pass 'no_items' to save some field lookups Additionally we can pass the subfield structure we have already fetched into the subroutine TransformMarcToKohaOneField Testing with NYTProf I saw a reduction of ~6 seconds when importing ~400 bibs and ~1000 items i.e. I exported and imported the sample data (after removing duplicate 010 from record 72) To test: 1 - Stage and import some records 2 - Confirm it works the same before and after patch -- You are receiving this mail because: You are the assignee for the bug. You are watching all bug changes.