Re: [matplotlib-devel] font problems: fc-list takes up 100% of CPU and runs forever

[Michael D. <md...@st...>]

I haven't heard of this issue before.

fc-list comes from the fontconfig project.  It is used to get a list of 
all of the fonts installed on the system.  It sounds like there is some 
bug there -- the usual culprit is that there is a slightly non-standard 
font installed on the system and fontconfig has a hard time parsing it.  
You could try updating fc-list (it's in all the major package managers).

As for a workaround from our end, we could try to set a timeout on 
fc-list and just skip it if it takes too long.  We can't rely on it 
being there on a Mac at all, so already we gracefully degrade to a less 
thorough search for fonts when fc-list can't be found.

Mike

On 10/01/2013 08:15 PM, Russell E. Owen wrote:
> I distribute a Mac application using matplotlib.
>
> Recent versions that use matplotlib 1.3.0 fail to run on some new
> accounts. The symptoms are that the application never finishes loading
> and a task named "fc-list" takes up 100% of a core -- for as long as
> we've let it run (a good fraction of an hour).
>
> The only solution we've found is to copy ~/.matplotlib from an account
> where it works to the new account.
>
> It is reproducible on some machines, but unfortunately not mine. When I
> create a new account on my machine I do not see the problem. Thus I have
> not yet been able to come up with a minimal case that shows the problem.
> I'll try to get more info.
>
> Is this is a known issue?
>
> -- Russell
>
>
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