I glanced at the SQLite docs, and I couldn't find anything.

Does it matter where it spent its time, as long as you know how long it took? Because you can get a quite high resolution timestamp out of Time::HiRes, and just calculate the differences.

#! perl -w
use Time::HiRes qw(gettimeofday);
use Time::HiRes qw(sleep);   # for this demo only
my @t = scalar gettimeofday;
sleep 3.1415926;
push @t, scalar gettimeofday;
printf "Total time wasted: %.3f seconds\n", $t[-1]-$t[0];
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The array @ serves two purposes: A) it stores the time measurements in a single variable (you can always use two scalars); and B) you can use it to add intermediate time markers, for more detailed reporting.