void* unmapSegment(void * arg)
{
char * freeAddr;
char * mapAddr;
ThreadData * threadData = (ThreadData*) arg;
int start=0;
int total=0;
Uint32 mapSize = threadData->mapSize;
Uint32 chunk = threadData->chunk;
mapAddr = threadData->mapAddr;
freeAddr = mapAddr+mapSize-chunk;
NdbSleep_MilliSleep(100);
for(Uint32 i=0;i<mapSize; i = i+chunk) {
start=getMicro();
if(munmap(freeAddr, chunk) < 0){
ndbout << "munmap failed" << endl;
exit(1);
}
total=(int)(getMicro()-start);
freeAddr = freeAddr - chunk;
NdbSleep_MilliSleep(10);
ndbout << "unmap 4096 bytes : " << total << "microsecs" << endl;
}
return NULL;
}
void malloctest(int loopcount, int memsize, int touch) {
long long start=0;
int total=0;
int i=0, j=0;
int size=memsize*1024*1024; /*bytes*/;
float mean;
char * ptr =0;
printf("Staring malloctest ");
if(touch)
printf("with touch\n");
else
printf("\n");
start=getMicro();
for(i=0; i<loopcount; i++){
ptr=(char *)malloc((size_t)(size));
if(ptr==0) {
printf("failed to malloc!\n");
return;
}
if(touch) {
for(j=0; j<size; j=j+4096)
ptr[j]=1;
}
}
total=(int)(getMicro()-start);
mean=(float)((float)total/(float)loopcount);
printf("Total time malloc %d bytes: %2.3f microsecs loopcount %d touch %d \n",
size, mean,loopcount, touch);
}
void freetest(int loopcount, int memsize) {
long long start=0;
int total=0;
int i=0, j=0;
int size=memsize*1024*1024; /*bytes*/;
float mean;
char * ptr =0;
loopcount = 1;
printf("Staring free test (loopcount = 1 no matter what you prev. set)\n");
for(i=0; i<loopcount; i++){
ptr=(char*)malloc((size_t)(size));
if(ptr==0) {
printf("failed to malloc!\n");
return;
}
for(j=0; j<size; j=j+4096)
ptr[j]='1';
start=getMicro();
free(ptr);
total=(int)(getMicro()-start);
}
mean=(float)((float)total/(float)loopcount);
printf("Total time free %d bytes: %2.3f microsecs loopcount %d \n",
size, mean,loopcount);
}
void unmaptest(loopcount, memsize)
{
long long start=0;
int total=0;
int i=0, j=0;
char * ptr;
int size=memsize*1024*1024; /*bytes*/;
float mean;
printf("Staring munmap test (loopcount = 1 no matter what you prev. set)\n");
loopcount = 1;
for(i=0; i<loopcount; i++){
ptr =(char*) mmap(0,
size,
PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS,
0,
0);
if(ptr<0) {
printf("failed to mmap!\n");
return;
}
for(j=0; j<size; j=j+1)
ptr[j]='1';
start=getMicro();
if(munmap(ptr, size)<0) {
printf("failed to munmap!\n");
return;
}
total=(int)(getMicro()-start);
/*
for(j=8192; j<size; j=j+4096) {
*(ptr+j)='1';
}
for(j=0; j<4096; j=j+4096) {
*(ptr+j)='1';
}
*/
}
mean=(float)((float)total/(float)loopcount);
printf("Total time unmap %d bytes: %2.3f microsecs \n",size, mean);
}
void mmaptest(int loopcount, int memsize, int touch) {
long long start=0;
int total=0;
int i=0, j=0;
char * ptr;
int size=memsize*1024*1024; /*bytes*/;
float mean;
printf("Staring mmaptest ");
if(touch)
printf("with touch \n");
else
printf("\n");
start=getMicro();
for(i=0; i<loopcount; i++){
ptr = mmap(0,
size,
PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS,
0,
0);
if(ptr<0) {
printf("failed to mmap!\n");
return;
}
if(touch) {
for(j=0; j<size; j=j+4096)
ptr[j]=1;
}
}
total=(int)(getMicro()-start);
mean=(float)((float)total/(float)loopcount);
printf("Total time mmap %d bytes: %2.3f microsecs \n",size, mean);
}
void* mapSegment(void * arg) {
ThreadData * threadArgs;
long long start=0;
int total=0;
int id = *(int *)arg;
threadArgs = new ThreadData [1];
Uint32 size=5*1024*1024;
struct NdbThread* unmapthread_var;
void *status = 0;
int run = 1;
int max=0, min =100000000, sum=0;
while(run < 1001) {
start=getMicro();
char * ptr =(char*) mmap(0,
size,
PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS,
0,
0);
total=(int)(getMicro()-start);
ndbout << "T" << id << ": mmap took : " << total << " microsecs. "
<< " Run: " << run ;
ndbout_c(" mapped @ %p \n", ptr);
if(total>max)
max = total;
if(total<min)
min=total;
sum+=total;
if(ptr<0) {
ndbout << "failed to mmap!" << endl;
exit(1);
}
threadArgs[0].mapAddr = (char *)ptr;
threadArgs[0].mapSize = size;
threadArgs[0].chunk = 4096;
threadArgs[0].idx = 0;
for(Uint32 j=0; j<size; j=j+4096)
ptr[j]='1';
unmapthread_var = NdbThread_Create(unmapSegment, // Function
(void**)&threadArgs[0],// Arg
32768, // Stacksize
(char*)"unmapthread", // Thread name
NDB_THREAD_PRIO_MEAN); // Thread prio
if(NdbThread_WaitFor(unmapthread_var, &status) != 0) {
ndbout << "test failed - exitting " << endl;
exit(1);
}
run++;
}
ndbout << "MAX: " << max << " MIN: " << min;
float mean = (float) ((float)sum/(float)run);
ndbout_c(" AVERAGE: %2.5f\n",mean);
}
