> Here is a typical outputs from the program running in debug mode:
Debug builds can be substantially slower. I would expect at least some
performance improvement with a release build (optimizations on).
> Notice my constraint is these SQL statements must run one by one, not within
> a transaction.
Alas, this will dramatically reduce write performance. Since each
insert statement will now require an explicit disk flush, it will be
very slow. Is there *really* no way to group multiple writes together?
As you've likely read elsewhere, doing so can provide orders of
magnitude performance improvements-- well worth the effort to reorganize
your architecture a bit.
> 1) are these expected performance on windows?
> 2) if not, what can be done to improve it?
If you really must run the statements individually, you have a few (less
than perfect) alternatives:
- Turn off synchronous writes ("pragma synchronous = OFF"). Though this
will dramatically improve your insert performance, you will be running
without any safety net: If the application crashes or exits during a
write, your database may become (permanently) corrupted.
- The compiler optimizations (above) will likely help somewhat, though
not terribly much.
- A faster (higher RPM) hard drive will help somewhat.
~Eric
_______________________________________________
sqlite-users mailing list
[email protected]
http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
