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I have a ubuntu VM of 12.04 server virsion and it is running on centos.

VM have 8GB of RAM and 1 core processor for it.

I amd running following application on it

hadoop 1.0.4
hbase-0.94.12
Intellicus (BI tool)

i observe a strange problem with my system all the application are running very slow.

here is the output of some commands i fired

free -m
         total       used       free     shared    buffers     cached
Mem:          7987       2351       5635          0        166        894
-/+ buffers/cache:       1290       6697
Swap:         4091          0       4091

I have Preload installed on it for performance boost but nothing really working for me and the host is having sufficient memory approx 23 GB free.

how can i increase the ram and run them faster

i have heard that incense the RAM and application will run faster but it isn't true

i have seen the similar question here but not working in my case

share|improve this question
    
RAM is not your problem since there is 6697Mb free. Can you add the output of top to the question? –  Pieter Feb 27 at 15:03
    
Sure but I am not at my work place will update question ASAP –  Vikas Hardia Feb 27 at 15:07

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