Douglas said:
You're right Kennedy.
8 thousand megabytes is 8 gigabytes.
Still doesn't answer why the scanner won't work with less pagefile size.
Probably because of the way it scans the batch - all of the image at one
time then extract the individual frames from the data.
Scanning at 4800ppi with 16bit colour results in a complete page
exceeding 8Gb of data, so it needs that swap size. Microsoft's
recommendations are based on certain assumptions as to how the pagefile
is used, swapping data and program between RAM and file transparently to
the user as they multitask between applications. Based on that
assumption, 1.5x RAM is a reasonable maximum, but not enough for your
purpose.
Most applications which generate large amounts of data would generally
write the data to a scratch file on the disk rather than write it to
memory, and expect Windows to cope with the RAM overflow - that is not
what a pagefile is there for. Photoshop does this itself as do most of
the high resolution scanner drivers, such as Nikon's and, of course,
Vuescan. Epson's scanner software should have been written that way,
using its own scratch file rather than scanning to RAM. They obviously
haven't considered how much data that their scanner is capable of
generating before control returns to the user or how that impacts on
typical sized computers. :-(
