"thefuck" typically loads slower that I manually type the command

[vi]

$ time echo q | python /.../thefuck/f qqq
qrq [enter/↑/↓/ctrl+c]
...

real	0m0.513s
user	0m0.390s
sys	0m0.110s

# echo 1 > /proc/sys/vm/drop_caches

$ time echo q | python /mnt/src/git/thefuck/f qqq
qrq [enter/↑/↓/ctrl+c]
...

real	0m5.646s
user	0m0.490s
sys	0m0.160s

And it is rarely actually in cache and I need it. It's HDD, not SSD.

# echo 1 > /proc/sys/vm/drop_caches

$ time echo q | strace -cw python /mnt/src/git/thefuck/f qqq
qrq [enter/↑/↓/ctrl+c]...
% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
 80.89    3.777269         273     13845           read
  7.53    0.351812        2814       125           getdents
  5.47    0.255403          23     10895       679 stat
  2.14    0.099991           7     15236           fstat
  1.94    0.090694           6     14036         8 lseek
  0.71    0.033002           9      3674      2254 open
  0.52    0.024497       24497         1           execve
...
------ ----------- ----------- --------- --------- ----------------
100.00    4.669910                 61776      3435 total

real	0m5.945s
user	0m0.740s
sys	0m0.950s

Version 60497b9