Re: [Gimp-user] Debugging Perf on Linux

[Robert Bieber <gimp biebersprojects com>]

Big thanks to Elle, it turns out the integer precision was the issue.  
On the laptop I was in integer precision, but it was 8 bit because I'd 
loaded the image from a jpeg.  Switching to 32-bit float makes things 
much more usable on the desktop


On 03/27/2018 06:35 PM, Robert Bieber wrote:
> How would I tell?  I just generated my monitor profiles with Ubuntu's 
> color management control panel section: I'm still not as much of a 
> power-user in that area as I'd like to be
>
> > So is there any chance that your monitor profile at home is a LUT 
> > profile? What about the image's assigned profile - was it possibly a 
> > LUT profile? And/or was soft proofing somehow activated?
> How would I tell?  I just generated my monitor profiles with Ubuntu's 
> color management control panel section: I'm still not as much of a 
> power-user in that area as I'd like to be
> > Also, try operating at 32f instead of 16i, which will eliminate some 
> > internal precision changes. And try disabling opencl and setting the 
> > number of threads to "1".
> Interesting.  I'll give that a shot too, although I was definitely in 
> an integer mode when testing on my laptop and didn't experience any 
> noticeable perf degradation, so I'm guessing that's not the culprit
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