this post was submitted on 19 Jul 2023
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I decided to yay resolve-davinci but it takes a WHOLE DAY to build(Building CXX object). Why? I have Ryzen 7 1700x and its usage is only up to 25%

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[–] [email protected] 12 points 1 year ago (2 children)

You can set MAKEFLAGS in /etc/makepkg.conf to something like "-j8" (where "8" should be something like the number of cores you have or maybe number of cores minus one or two if you want to leave some CPU capacity available.

However, the build instructions for a specific package can override these defaults. You'd have to look at the resolve-davinci package files to see if it does that for some reason that might be important.

[–] [email protected] 10 points 1 year ago

Better yet, use ~/.makepkg.conf to avoid setting it system wide and use MAKEFLAGS="-j$(nproc)" to have it automatically detect how many processes to use.

[–] [email protected] 7 points 1 year ago (1 children)

Thanks! It was only 2 cores by default :)

[–] [email protected] 3 points 1 year ago

Pretty sure what you were actually compiling was qt5-webkit, which davinci-resolve depends on, and yeah its a bitch of a compile without multi-threading.

[–] [email protected] 9 points 1 year ago (1 children)

We would need to have way more information when we should say you why. But my first guess would be that you're only using one core.

[–] [email protected] 11 points 1 year ago* (last edited 1 year ago) (3 children)

I had the same problem the other day and yes, it was only using one core.

Turns out you just need to set MAKEFLAGS="-j$(nproc)". I didn't test it yet, but the arch wiki says so

[–] [email protected] 4 points 1 year ago
[–] [email protected] 3 points 1 year ago
[–] [email protected] 1 points 1 year ago

Follow this OP.

[–] [email protected] 8 points 1 year ago

There's a file, I can't remember what it is but I have it written on a sticky note on my desk at home, where I edited the makeflag or something to use 10 threads instead of 2 (I have a r5 3600) so maybe you just aren't using all your threads.

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