On 28 June 2013 18:08, Stephan Beal wrote:

> i've seen sqlite3 tests of mine in a 32-bit VM running on
> 64-bit hardware run twice as fast as that same code on the
> 64-bit hardware (outside the VM)

One of our customers uses our product on a VM, and it appears
that the hypervisor lies about having done an fsync.

Performace is the same (as in transactions per second) regardless
of what PRAGMA synchronous is set to.  On real hardware, there's
a big difference.

Paul.
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