set key reverse Left invert outside
set grid
loss_scale=3
-plot [:160] \
+plot \
'kernel.dat' using 1:2:($3*loss_scale) title 'kernel', \
'mmap-mmap.dat' using 1:2:($3*loss_scale) title 'mmap-mmap', \
'mmapbusy-mmap.dat' using 1:2:($3*loss_scale) title 'mmapbusy-mmap', \