Package: gimp Version: 2.8.2-2The gimp slows noticably when I use the rectangle select tool. On my 1.9 GHz Pentium 4 machine, it is quite responsive doing tasks like changing the color balance of a 10 megapixel photo, but after selecting a region using the rectangle tool, it slows markedly. All gimp functions I have tried get slow, for example, opening a menu takes upwards of 5 seconds. Cursor movement remains responsive, although it can take a few seconds for the cursor symbol to update. Examining the running processes, 'gimp' looks okay but 'x' continuously uses about 85% of the CPU. Memory use looks okay. If I switch to another application, for example LibreOffice, that application is responsive.
The gimp remains slow and x remains a CPU hog until I close the image or I dismiss the selection using the 'select none' command.
One peculiar aspect, xcf files seem to preserve whatever causes the problem. If I save a file while the gimp is slow, then the gimp will slow again when I reopen the file. To demonstrate this, I created the attached example by opening the gimp, and created an empty image with the letter template. To make the image a little more interesting, I used the gradient tool to apply a conical gradient. The gimp showed almost no hesitation to any of these commands. Then I selected a small region with the rectangle tool and the gimp slowed. I patiently did a crop to selection to make the image smaller for your convenience. Then saved and closed the gimp.
Then I opened the gimp with this small file. The gimp immediately becomes slow. Patiently open a 10 megapixel JPEG, whose window happens to cover the small image, and the gimp becomes responsive. Bring the window with the small image forward, and the gimp slows. Issue the 'select none' command and the gimp becomes responsive.
Problem started when I upgraded from Debian 6.6 to 7.1. With 6.6, the gimp was responsive even with multiple ten-megapixel images open with multiple regions selected.
I am running Debian 7.1 with pretty much standard desktop installation except xfce instead of gnome.
kernel 3.2.0-4-686-pae libc6 2.13-38 X server-common 2:1.12.4-6 xfce4 4.8.0.3 gimp 2.8.2-2 Asus P4T 533-C Intel Pentium 4 478 1.9 GHz PNY Verto GeForce FX 5900SE AGP
conical_crop_small.xcf
Description: application/xcf
