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Stress testing memory using malloc in linux ??
12-14-2009
12-14-2009
)...given below is the code for filling the memory in linux ....yes the swap is unavailable. The vendor installed it that way.// blast.cpp - MEMORY STRESS TEST SCRIPT
//
// Note: This allocates huge blocks of memory and fills with 1
//
// MAINTENANCE HISTORY
// DATE AUTHOR AND DETAILS
// 15-12-09 BAS TR - ORIGINAL (modified)
//
//----------------------------------------------------------------------------79
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MEGABYTE 1024*1024
int main(int argc, char *argv[])
{
void *myblock = NULL;
int count = 0;
char ch,*mem;
if ( argv[1] == NULL ) {
printf("usage: blast <memmory space>\n");
exit(0);
}
int memReq = 0;
memReq = strtol (argv[1],&mem,10);
//while (1)
while (count < memReq)
{
myblock = (void *) malloc(MEGABYTE);
if (!myblock) break;
memset(myblock,1, MEGABYTE);
printf("Currently allocating %d MB\n", ++count);
}
do {
printf("Hit 'y' to exit...\n");
scanf("%c",&ch);
} while ( ch == 'y' );
free(myblock);
exit(0);
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