perl 025-1.pl each 10000 >  log
sleep 10;
perl 025-1.pl keys 10000 >> log
sleep 10;
perl 025-1.pl each 100000 >> log
sleep 10;
perl 025-1.pl keys 100000 >>  log
sleep 10;
perl 025-1.pl each 1000000 >> log
sleep 10;
perl 025-1.pl keys 1000000 >> log
sleep 10;
perl 025-1.pl each 2000000 >> log
sleep 10;
perl 025-1.pl keys 2000000 >> log