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I know that Univ FileSystem stores all file data in the form of first few direct nodes followed by indirect nodes. But internally some systems implement where , a single block of 4096 isnt allocated...

I am trying to randomly read a file from a simple C program, how can i clear cache from there before each read? any ideas?

Thanks Jim. Well i have to do evaluate buffer size for repeated random file access. im sorry but being a novice.. i dint get what your shell script does here?

I am tryin to evaluate ideal buffer size for file reading? Any input?Ideas?

I have to use rdtsc on ubuntu for performance evaluation. But i am not getting the correct value. I am placing a sleep on 10 seconds, but value i get is some 1 sec... i dont know where im going...