[CentOS] what is the best way to delete so many queue files?

Hello, all.
 
 
I found that so many unnessary queue files are saved at /var/spool/clientmqueue/ directory.
 
 
I tested two way to delete these files. 
 
1. 
# rm -rf /var/spool/clientmqueue/* 
 
2. 
# cd /var/spool/clientmqueue/ ; find . | xargs rm -fv
 
But this makes a few load of the system and took too much time to delete.
 
What is the best way to delete fast without too much load?
 
 
 
Thanks in advance.
 
_________________________________________________________________
암호를 잃어버렸을 때를 대비하여 미리 암호 확인용 메일 설정하세요!
http://im.msn.co.kr/im/main/mainCoverDetail.asp?seq=2251&page=1&BbsCode=bbs01&ser_k=a&ser_v=