On 2/1/18, Nick <haveagoodtime2...@gmail.com> wrote:
> I update sqlite in my Android mobile phone from 3.9.2 to 3.16.2.
>
> There are many test cases in speedtest1.c and case 270 is a DELETE case
> which is the most time-consuming one.
> There is a result.  (different version + different page_size)
>
>                  3.16.2+4096         3.16.2+1024          3.9.2+4096
> 3.9.2+1024
> Case 270:       5.695s                 5.908s                   2.307s
>

We get very different results when comparing the performance of 3.9.2
to 3.16.2.  See the graph at https://www.sqlite.org/cpu.html for
example.

Since in your case, the 3.9.2 was compiled by Google and you compiled
3.16.2 yourself, I suggest that there might be some difference in your
compiler or compiler settings.
-- 
D. Richard Hipp
d...@sqlite.org
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