tar reflink

teknoraver@fedorarm:~/src$ rm -rf software ; time tar xvf software.tar
software/
software/linux-6.1.tar.xz
software/linux-6.5.tar.xz
software/linux-6.8.tar.xz
software/linux-6.6.tar.xz
software/linux-6.9.tar.xz
software/linux-6.7.tar.xz
software/linux-6.3.tar.xz
software/linux-6.4.tar.xz
software/linux-6.0.tar.xz
software/linux-6.2.tar.xz

real	0m2.324s
user	0m0.025s
sys	0m0.745s
teknoraver@fedorarm:~/src$ rm -rf software ; time tar xvf software.tar --reflink
software/
software/linux-6.1.tar.xz
software/linux-6.5.tar.xz
software/linux-6.8.tar.xz
software/linux-6.6.tar.xz
software/linux-6.9.tar.xz
software/linux-6.7.tar.xz
software/linux-6.3.tar.xz
software/linux-6.4.tar.xz
software/linux-6.0.tar.xz
software/linux-6.2.tar.xz

real	0m0.455s
user	0m0.013s
sys	0m0.299s

teknoraver@fedorarm:~/src$ rm -rf software ; perf stat tar xf software.tar

 Performance counter stats for 'tar xf software.tar':

            963.29 msec task-clock:u                     #    0.274 CPUs utilized
                 0      context-switches:u               #    0.000 /sec
                 0      cpu-migrations:u                 #    0.000 /sec
               163      page-faults:u                    #  169.211 /sec
   <not supported>      cycles:u
   <not supported>      instructions:u
   <not supported>      branches:u
   <not supported>      branch-misses:u

       3.511695561 seconds time elapsed

       0.018284000 seconds user
       0.865485000 seconds sys


teknoraver@fedorarm:~/src$ rm -rf software ; perf stat tar xf software.tar --reflink

 Performance counter stats for 'tar xf software.tar --reflink':

            371.10 msec task-clock:u                     #    0.837 CPUs utilized
                 0      context-switches:u               #    0.000 /sec
                 0      cpu-migrations:u                 #    0.000 /sec
               162      page-faults:u                    #  436.540 /sec
   <not supported>      cycles:u
   <not supported>      instructions:u
   <not supported>      branches:u
   <not supported>      branch-misses:u

       0.443200550 seconds time elapsed

       0.004412000 seconds user
       0.322563000 seconds sys