Comment 13 for bug 1815339

The problem is not really to do with the memory available.

Because of the way the cups device can change color space, and uses "non-standard" color spaces, we have it claim to be a DeviceN device, so ICC profile validation doesn't error out. But that, as it turns out, ends up with trying to use a default DeviceN fill_rectangle method (which returns an error, because of the nature of DeviceN we can't really provide a functional default implementation).

That's what happens with RIP_MAX_CACHE = 128

Using smaller memory size, we go through the clist, and that creates a 32 bit memory device to render the bands, hence bypasses the above problem.

I'll need to discuss this with Michael.