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how to estimate the disk access time?
e.g. the time between read one byte and another byte in the
disk.
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Answer Posted / daniele
http://www.linuxinsight.com/how_fast_is_your_disk.html
% sudo hdparm -t /dev/hda
/dev/hda:
Timing buffered disk reads: 140 MB in 3.02 seconds = 46.28
MB/sec
Substitute /dev/hda with the name of your raw disk device,
of course (for example, it might be /dev/sda if you're using
libata, or something else).
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the factorial of non-negative integer n is written n! and is defined as follows: n!=n*(n-1)*(n-2)........1(for values of n greater than or equal to 1 and n!=1(for n=0) Perform the following 1.write a c program that reads a non-negative integer and computes and prints its factorial. 2. write a C program that estimates the value of the mathematical constant e by using the formula: e=1+1/!+1/2!+1/3!+.... 3. write a c program the computes the value ex by using the formula ex=1+x/1!+xsquare/2!+xcube/3!+....
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