Comment Use bigger block size! (Score 1) 281
Why don't you use 4 KB block size especially because you're using large files. It's about 10 times faster.
% ls -l bigfile
-rw-rw-r-- 1 root root 1843200000 Nov 7 17:04 bigfile
% time rm bigfile
0.00s usr, 0.28s sys, 4.94s real, 5% CPU
% ls -l bigfile
-rw-rw-r-- 1 root root 1843200000 Nov 7 17:04 bigfile
% time rm bigfile
0.00s usr, 0.28s sys, 4.94s real, 5% CPU