Re: sphinx-build is really slow, any way to improve that?

[Daniel P . Berrangé]

On Mon, Sep 05, 2022 at 10:21:55PM +0100, Peter Maydell wrote:
> On Mon, 5 Sept 2022 at 20:51, Claudio Fontana <cfontana@suse.de> wrote:
> > when I build qemu, there is a lot of time spent at the end of the build 
> > where one cpu goes 100% on sphinx-build.
> >
> > Is there some way to parallelize that? It seems it is the current 
> > bottleneck for rebuilds for me..
> 
> It's a big fat python program, so I suspect not, but
> maybe I'm wrong.

It annoys me too and I've had a look at what it is doing in the past and
failed to find an obvious way to improve it. I fear this could be an
inherant limitation of the way we use sphinx to build the docs as a
complete manual, as compared to say treating each docs source file as
a distinct standalone web page.

With regards,
Daniel
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