Also...here's another part of the benchmark which shows triggers aren't as evil 
as I thought.  Trigger for this example was 2X the manual update.

F:\>d:batch 500000 1000 12
using wal mode
using update trigger
Sqlite Version: 3.7.5
Inserting 500000 rows using a bulk of 1000
commits per second: 71428.6
F:\>d:batch 500000 1000 20
using wal mode
using manual update after insert
Sqlite Version: 3.7.5
Inserting 500000 rows using a bulk of 1000
commits per second: 38461.5

Michael D. Black
Senior Scientist
NG Information Systems
Advanced Analytics Directorate
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