No it doesn't. You're confusing disk writes with commits which are actually quite different things. I would suggest reading this, this and this articles to gain better understanding of how SQLite transactions and disk writes work.

In this case it doesn't matter anyway because the database is held in memory and there is no delay due to disk. It's a test focused on DBD::SQLite performance rather than SQLite itself.

Regards,
Alex.

In reply to Re^2: DBD::SQLite bulk insert woes by dwalin
in thread DBD::SQLite bulk insert woes by dwalin

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