Graphics.drawImage() in Java is EXTREMELY slow on some computers yet much faster on others

Question

I\'m having a strange problem, basically in Java Graphics.drawImage() is extremely slow on some computers and faster on others. This isn\'t related to the computers power ei

Answer 1

How are you judging the computers' power? A 50x25 K 32-bit image takes more than 4.5 GB RAM to hold in memory (50000 * 25000 * 4 bytes). If one computer has more RAM than another, that can make a huge difference in speed, because it won't have to swap to disk as often. You should consider grabbing subsections of the image and working with those, instead of the whole thing.

Edit: Are you using the latest Java & graphics drivers? If your image is only 5Kx2.5K, the only thing I can think of is that it's doing it without any hardware acceleration.