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Мужчины!

Как говорил Иисус Христос, если на хвосте у льва висит бирка с надписью
"Хавронья", протри газа свои.

$ head -c $((4<<20)) /dev/urandom |/usr/bin/time xz |wc -c
0.00user 1.13system 0:01.17elapsed 97%CPU (0avgtext+0avgdata 58564maxresident)k
0inputs+0outputs (0major+952minor)pagefaults 0swaps
4194576
$ head -c $((8<<20)) /dev/urandom |/usr/bin/time xz |wc -c
0.00user 2.56system 0:02.65elapsed 96%CPU (0avgtext+0avgdata 94372maxresident)k
0inputs+0outputs (0major+1188minor)pagefaults 0swaps
8389088

Как такое может быть, что user time и system time меняются местами?