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[bug#33210] Cuirass: Use a SQLite in single-thread mode

From: Clément Lassieur
Subject: [bug#33210] Cuirass: Use a SQLite in single-thread mode
Date: Mon, 05 Nov 2018 09:02:57 +0100
User-agent: mu4e 1.0; emacs 26.1

Ludovic Courtès <address@hidden> writes:

> Hello,
> Clément Lassieur <address@hidden> skribis:
>> These patches are supposed to slightly improve Cuirass' performances,
>> because it doesn't use the multi-threading features.
> Did you notice a measurable difference?

I haven't done any measurement yet, but according to the SQLite

    Setting -DSQLITE_THREADSAFE=0 causes all of the mutex and
    thread-safety logic in SQLite to be omitted. This is the single
    compile-time option that makes the most difference in optimizing the
    performance of SQLite.

So even if the optimization is small, it's the option that has the
biggest impact on performance.

> We could do it, but IMO that should be a last resort because I’d expect
> it to be a micro-optimization.

Lots of micro-optimizations lead to an overall faster application ;-).
And this one doesn't make the code more complicated.  To me it's just a


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