- "khist2.dat" with lp lt 1 title "Kernel GW, 2 byte messages", \
- "khist8.dat" with lp lt 2 title "Kernel GW, 8 byte messages", \
- "uhist2.dat" with lp lt 1 title "Userspace GW, 2 byte messages", \
- "uhist8.dat" with lp lt 2 title "Userspace GW, 8 byte messages"
+ "kern2-hist.txt" with lp lt 1 title "Kernel GW, 2 byte messages", \
+ "kern8-hist.txt" with lp lt 2 title "Kernel GW, 8 byte messages", \
+ "user2-hist.txt" with lp lt 1 title "Userspace GW, 2 byte messages", \
+ "user8-hist.txt" with lp lt 2 title "Userspace GW, 8 byte messages"