Particle fun

I have a mesh, and I want it to constantly emit particles, but I just can’t do it. By constantly I mean that all parts should emit particles at once, but now emiting starts from the mesh’s left side, and moves toward the right side, when it reaches it’s end, it starts again from the left. I want to create subtle smoke, but I can’t do it like this, because it seems like a lot of little explosions.
Is there a solution to this?

Select all the mesh in edit mode and press the Hash button in the Editing window (F9). This randomize the vertex order which affects the order in which they will be used to emit particles.