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Full Discussion: RHEL Memory issue
Operating Systems Linux Red Hat RHEL Memory issue Post 302977034 by MadeInGermany on Monday 11th of July 2016 11:27:33 AM
Old 07-11-2016
But a "memory sink" would not be "system buffers/cache". It is part of the 13 GB memory in the sample in post#1.
Linux really suffers from the following work-load:
one process keeps I/O writing (until the free memory is shrunk to nearly 0), while another process writes to not yet initialized memory (that has been malloc()ed before).
 

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explain_malloc_or_die(3)				     Library Functions Manual					  explain_malloc_or_die(3)

NAME
explain_malloc_or_die - Allocate and free dynamic memory and report errors SYNOPSIS
#include <libexplain/malloc.h> void *explain_malloc_or_die(size_t size); DESCRIPTION
The explain_malloc_or_die function is used to call the malloc(3) system call. On failure an explanation will be printed to stderr, obtained from explain_malloc(3), and then the process terminates by calling exit(EXIT_FAILURE). This function is intended to be used in a fashion similar to the following example: void *result = explain_malloc_or_die(size); size The size, exactly as to be passed to the malloc(3) system call. Returns: This function only returns on success. On failure, prints an explanation and exits. SEE ALSO
malloc(3) Allocate and free dynamic memory explain_malloc(3) explain malloc(3) errors exit(2) terminate the calling process COPYRIGHT
libexplain version 0.52 Copyright (C) 2009 Peter Miller explain_malloc_or_die(3)
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