[luatex] mkluatexfontdb devours memory

[Arno Trautmann]

Hi,

Élie Roux wrote:
> Hi,
>
>> the output of
>>
>> luaotfload-tool --update --force --verbose=5 --log=stdout
>>
>> is available under
>>
>> http://justpaste.it/2lhr
>>
>> I stopped the program when suddenly the memory ran full. This happend at
>> some step, it did not increase steadily during the whole process. Also,
>> the CPU was at 100% from that point on. The output doesn't seem to
>> report an error, does it?
>
> It doesn't seem to report any error. I've run a valgrind on luatex with
> the attached simple test file calling fontloader.info(); it seems to
> have a memleak of about 80kb+(2kb per font). It's not nothing, but 2kb
> times your 7400 fonts is about 15Mb, we're far from 3Gb... This doesn't
> seem very easy to debug, but I'll continue to make tests about this...
> Maybe you could run dbg or valgrind to see what's happening? (you'll
> have to build luatex from sources if you want to follow this way, but
> it's fairly easy).

I'll happily do this, but unfortunately I don't even know what you are 
talking about …
So far I've never built luatex from source, I don't know what dbg is and 
I've never heard of valgrind … is this something that can be done by a 
few lines of input that you can offer me or do I have to dig into 
building luatex? (If so, I'll try to, but it may take some time …)

cheers
Arno