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GIMP performance.

Jan 6, 2012, 18:56 (This post was last modified: Jan 6, 2012 18:59 by heminder.)
Post: #1
GIMP performance.
hey dudes.

GIMP always seems to chug when i draw on a big(ger) canvas. in the system monitor i find that it isn't using my hardware fully. cpu usage averages around 50-60% and the two cores see-saw each other, ie when one core is working the other is idle, and they switch roles periodically.

before you ask, yes i have set GIMP to use 2 processors in the environment preferences, and tile cache is 3gigs so RAM isn't a reason. my system has enough RAM which hasn't ever been maxed out yet, and it never touches the swap space. i'm using Ubuntu Lucid, but same thing happens in Oneiric.

is there a way to get GIMP to use my hardware properly, or am i going to have to go back to using Photoshop/Painter?
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Jan 6, 2012, 19:03
Post: #2
RE: GIMP performance.
AFAIk there aren't that many operations for which Gimp uses several cores in parallel. Most plugins are single-threaded. I suspect only the GEGL stuff is multi-core capable to some extent.

Now it all depends on the canvas size and what you are doing....

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Jan 6, 2012, 19:30
Post: #3
RE: GIMP performance.
that's a shame. are there any plans to adapt to modern hardware?

what i'm doing is maybe 90% painting, 6% transformations, and 4% everything else. canvas size is usually around the 4000 pixels range and it gets bigger as i continue working on the image.
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Jan 6, 2012, 20:06
Post: #4
RE: GIMP performance.
(Jan 6, 2012 19:30)heminder Wrote:  that's a shame. are there any plans to adapt to modern hardware?

what i'm doing is maybe 90% painting, 6% transformations, and 4% everything else. canvas size is usually around the 4000 pixels range and it gets bigger as i continue working on the image.
Yes, there is WIP to use CUDA (ie, use the graphics card processors).

On the other I routinely edit 4000px pictures (from my camera) and it's not slow on my laptop, especially when painting. How many layers do you use?

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Jan 6, 2012, 21:43
Post: #5
RE: GIMP performance.
cool. i'm guessing that's not as useful as true multicore support, but still a step up.
plus i don't think that will be of much benefit to those using integrated graphics?

i meant 4000px wide, 2 or 3 layers max usually.
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