-plot "1000x1000.dat" title "isam 1000" with linespoints, \
- "100x10000.dat" title "isam 100" with linespoints, \
- "10x100000.dat" title "isam 10" with linespoints, \
- "1x1000000.dat" title "isam 1" with linespoints
+plot "bench1.1000.dat" title "isam 1000" with linespoints, \
+ "bench1.100.dat" title "isam 100" with linespoints, \
+ "bench1.10.dat" title "isam 10" with linespoints, \
+ "bench1.1.dat" title "isam 1" with linespoints