01-24-2011
Memory usage in a Solaris Container
Hi All,
We have a server with Solaris 10 installed. The total memory of the server is 64GB. In order to check the memory info of the server I use "top" utility that gives me total and free memory in real-time.
I have also installed a Sun container (non-global zone) on top of parent operating system (global zone). Now in order to check the memory utilization I use the same "top" utility even here, but the output is something absurd.
So is there any way or a third party utility ( like top) that would give me total memory present and memory free/usage within the container.
Thanks....
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LEARN ABOUT LINUX
malloc_trim
MALLOC_TRIM(3) Linux Programmer's Manual MALLOC_TRIM(3)
NAME
malloc_trim - release free memory from the top of the heap
SYNOPSIS
#include <malloc.h>
int malloc_trim(size_t pad);
DESCRIPTION
The malloc_trim() function attempts to release free memory at the top of the heap (by calling sbrk(2) with a suitable argument).
The pad argument specifies the amount of free space to leave untrimmed at the top of the heap. If this argument is 0, only the minimum
amount of memory is maintained at the top of the heap (i.e., one page or less). A nonzero argument can be used to maintain some trailing
space at the top of the heap in order to allow future allocations to be made without having to extend the heap with sbrk(2).
RETURN VALUE
The malloc_trim() function returns 1 if memory was actually released back to the system, or 0 if it was not possible to release any memory.
ERRORS
No errors are defined.
CONFORMING TO
This function is a GNU extension.
NOTES
This function is automatically called by free(3) in certain circumstances; see the discussion of M_TOP_PAD and M_TRIM_THRESHOLD in mal-
lopt(3).
This function cannot release free memory located at places other than the top of the heap.
This function releases only memory in the main arena.
SEE ALSO
sbrk(2), malloc(3), mallopt(3)
Linux 2014-05-28 MALLOC_TRIM(3)