[qmailtoaster] How to remove cached and buffer memory in Centos server

[ChandranManikandan]

Hi All,
I had used this command and shows below result.
#free
             total       used       free     shared    buffers     cached
Mem:      10370416    9965280     405136          0     226428    8775244
-/+ buffers/cache:     963608    9406808
Swap:      4096564        104    4096460

But if i access the server via ssh it's open slow performance even in local
ip.
Is there any way to clear temporary buffer and cached commands.

-- 
*Thanks & Best Regards,
Manikandan.C
*