[sebcat]

If I Shift-Esc in Chrome with one tab open, it shows that this tab ("Add Comment") consumes 0 bytes of shared memory and 163 828 kB of private memory.

Current window size is 1280x800. Assuming the render buffer is ARGB32 and assuming one render buffer (which is probably an incorrect assumption) that should be ~40MB. The GPU memory is listed as a separate entry in that view, but I don't know if that is also included in the "private memory" listing.

Going turn off javascript and restart and see what it says then.

EDIT: 164 856 kB w/o JS. So no change (relatively).

[londons_explore]

Zero bytes of shared memory? So you have no other processes running which have libc loaded in?

[sebcat]

    $ ldd chrome | wc -l
         124

Shift-Esc is Chrome's own task manager. I don't know how they count.