[odb-users] "threads-sqlite" test case takes an extraordinary long time to execute

Andrew Cunningham odb at a-cunningham.com
Fri Jul 22 12:43:46 EDT 2016

Hi Boris,
As you said, sending me a zip of test+DLLs would be worth looking at. I
can't imagine what is different to our setup.


On Fri, Jul 22, 2016 at 8:40 AM, Boris Kolpackov <boris at codesynthesis.com>

> Hi Andrew,
> Ok, I've tested the latest ODB pre-release with SQLite 3.13.0 on
> Visual Studio 12/2013. I've built everything 64-bit/Release. On
> my Win7 VM with 2 vCPUs the threads test took 1m40s. CPU utilization
> was ~50% each which makes perfect sense since the test is very write
> heavy (and since writes need exclusive locks, only one CPU can actually
> do anything most of the time).
> My guesses as to what could be going wrong on your side:
> 1. Something wrong with the way you built things.
> 2. Something wrong with your Windows setup.
> 3. Some interaction between your Windows setup and SQLite.
> To eliminate/confirm #1 (most likely) I can zip up the test and
> all the DLLs that I've built and you can try to run it. Let me
> know if you would like to give this a go.
> Boris

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