rm -rf is too slow on large files and directory structure(Around 30000)

[Bilal mk <bilalhifx@gmail.com>]

Hello,

I tried to remove 5GB directory. In that directory around 30000 files and directory. It will take more than 30 min to complete.
There is no other cpu intensive process running. After sometime it goes to D state and unbale to kii that process. 

I have also tried find with xargs method to remove. It will also take long time to complete
find /directory | xargs rm -rf


USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root      1116  0.1  0.0      0     0 ?        D    09:10   0:25 [kdmflush]
root      1117  0.2  0.0      0     0 ?        D    09:10   0:39 [kdmflush]

There have any method to speed up this process.

Thanks