Memory Issue in ARM 9 Embedded Linux.

[ashishbpatil123]

I am writing an embedded application based on ARM 9 v5 processor, and using NAND of size 64 MB. My problem is that when I copied the text or binary files of sized 3-4 MB the free physical memory gets reduced by only few KB's, whereas ls -l show the file size in MB.

By repeating same process i reached one point where df command shows me 10 MB size is free and du show the total size 239MB.

how this can be happen as i have only 64MB of NAND how i am able to add files upto 239 MB of size.

please reply. i need help to solve this problem.

Thank in advanced.

[levi_silva]

Hey,

Try to read this:

javeedpassion.com/2009/12/du-and-df-show-different-results/

[levi_silva]

Give an special attention to file descriptor that points to file that doesnt exist anymore. With that, read the man page of du and df to understand how they work and how they do their jobs in different ways.