On Mon, Jun 11, 2018 at 4:27 PM Clemens Ladisch <clem...@ladisch.de> wrote:
> Dominique Devienne wrote: > > My assumption > > was that after the zeroblob(N), there was enough room in the main DBs > > pages, such that the subsequent blob open+write+close did not need to > > generate any "page churn" (i.e. journal activity) and could write > directly > > to the pages created on initial insert. > > It does write to the same pages, but those pages must be copied to the > rollback journal so that they can be restored if the transaction is > rolled back. (Or are the two passes inside the same transaction?) > They are part of the same transactions. So the no-rewrite pages should still apply, no? > Don't insert the zero blobs in the first pass; this still rewrites all > rows, but there is less data that might need to be rolled back. > > Consider moving the blobs to a separate table. > Is that really/still relevant, considering the above? Thanks, --DD _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
