1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
/* This file is part of sp-stress
*
* Copyright (C) 2009 Nokia Corporation.
*
* Contact: Jean-Luc Lamadon <jean-luc.lamadon@nokia.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
int main(int argc, const char* argv[])
{
if (2 == argc)
{
const unsigned size = strtoul(argv[1], NULL, 0) << 20;
const unsigned block_size = 512 << 10;
int big_chunk = size - size * 0.05;
int i = 1, block_nbr = (size - big_chunk) / block_size;
void* data;
printf("%d\n",block_nbr);
printf("%d\n",big_chunk);
printf("%d\n",block_size);
data = malloc (block_size + big_chunk);
for (i = 1 ; i < block_nbr ; i++)
{
data = (char*) realloc (data, i * block_size + big_chunk);
memset(data, '-', i * block_size + big_chunk);
}
printf ("loadmem eats %u MB \n", (i * block_size + big_chunk) >> 20);
while (1)
sleep(5);
}
else
{
printf ("Usage: loadmem <Memory allocation in MB>\n");
printf ("Example: loadmem 100\n");
}
return 0;
} /* main */
|
