Hi All,
I am facing an issue in file operation, when we read/write continuously to a
large file in our ppc 405 based device , memory usage shown in /proc/meminfo
increases by the number of bytes accessed.And after closing the application
also the memory used is not released and it goes to cached memory .
We are using 2.4.20 kernel in our device.We are not sure whether the
/proc/meminfo shows the erroneous output or the file read/write routines got
any problem.
Can anyone suggest me some idea how to trace out the problem.
I have given the sample code below.
The memory consumption grows and it takes about 10 MB memory space [10000 *
1024] when i run the below given code.
When i look into /proc/meminfo the free memory is reduced by 10 MB and Cache
Memory & Used memory is increased by 10 mb after running this application.
When i run the below given code first time the memory grows,when i run
succesively it doesn't grow again , may be using the already taken memory.
int main()
{
FILE *fp;
unsigned long int i;
unsigned char data[1024];
fp=fopen("test.txt","r");
for(i=0;i<10000;i++)
{
fread(data,1024,1,fp);
}
fclose(fp);
}
With Thanks & Regards,
Deepak S
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