On 4 Jun 2018, at 6:59am, ayagmur <ayagmu...@gmail.com> wrote: > When I try to delete 100 MB data by cascade (1 parent record - 100 child > records) it takes too long time (almost 10 minute) to complete, and the > duration increase/decrease by size of data (100 Mb: 10 minute, 300 MB: 30 > minute,etc)
What medium is your database stored on ? Is it a spinning-rust hard disk ? If so, do you have a way of finding out the rotation speed ? Is your database stored on the same computer running SQLite or is it being accessed across a network ? My other two questions are the ones Olivier Mascia asked, and you can use the SQLite command-line utility to answer them: What is the response to "PRAGMA secure_delete" ? What is the response to "PRAGMA auto_vacuum" ? For speed testing, try changing the settings on these and tell us whether that makes any difference. Simon. _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
