Hi,
I am running the following application.
#include<stdio.h>
#include<stdlib.h>
int main()
{
unsigned char* arr;
system("cat /proc/meminfo");
sleep(25);
arr = (char *)malloc (1048576);
system("cat /proc/meminfo");
sleep(25);
free(arr);
system("cat /proc/meminfo");
sleep(25);
}
I am getting the following meminfo statistics. As I am allocating and
freeing 1024 kb, so I should get the same information through /proc/meminfo:
MemTotal: 14296 kB
MemFree: 912 kB
Buffers: 1448 kB
Cached: 5564 kB
SwapCached: 0 kB
Active: 5480 kB
Inactive: 3664 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 14296 kB
LowFree: 912 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 0 kB
Writeback: 0 kB
Mapped: 5144 kB
Slab: 1560 kB
CommitLimit: 7148 kB
Committed_AS: 6492 kB
PageTables: 188 kB
VmallocTotal: 630784 kB
VmallocUsed: 262560 kB
VmallocChunk: 366588 kB
MemTotal: 14296 kB
MemFree: 920 kB
Buffers: 1448 kB
Cached: 5564 kB
SwapCached: 0 kB
Active: 5492 kB
Inactive: 3660 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 14296 kB
LowFree: 920 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 0 kB
Writeback: 0 kB
Mapped: 5152 kB
Slab: 1544 kB
CommitLimit: 7148 kB
Committed_AS: 7652 kB
PageTables: 188 kB
VmallocTotal: 630784 kB
VmallocUsed: 262560 kB
VmallocChunk: 366588 kB
MemTotal: 14296 kB
MemFree: 924 kB
Buffers: 1448 kB
Cached: 5564 kB
SwapCached: 0 kB
Active: 5488 kB
Inactive: 3660 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 14296 kB
LowFree: 924 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 0 kB
Writeback: 0 kB
Mapped: 5148 kB
Slab: 1544 kB
CommitLimit: 7148 kB
Committed_AS: 6624 kB
PageTables: 188 kB
VmallocTotal: 630784 kB
VmallocUsed: 262560 kB
VmallocChunk: 366588 kB
I think that the values given in first Committed_AS and 3rd Committed_AS
should be same. But the same is not the case. Why its so?
Anticipation and regards,
Abu.