void
dir_create(int x)
{
int i,j;
int ret;
char buf[100];
stats[_STAT_DIR_CREATE].best=(double)99999.9;
stats[_STAT_DIR_CREATE].worst=(double)0.00000000;
for(i=0; i<x; i++)
{
sprintf(buf,"iozone_L1_%d",i);
stats[_STAT_DIR_CREATE].starttime=time_so_far();
ret=mkdir(buf,0777);
if(ret < 0)
{
printf("Mkdir failed\n");
exit(1);
}
stats[_STAT_DIR_CREATE].endtime=time_so_far();
stats[_STAT_DIR_CREATE].speed=stats[_STAT_DIR_CREATE].endtime-stats[_STAT_DIR_CREATE].starttime;
if(stats[_STAT_DIR_CREATE].speed < (double)0.0)
stats[_STAT_DIR_CREATE].speed=(double)0.0;
stats[_STAT_DIR_CREATE].total_time+=stats[_STAT_DIR_CREATE].speed;
stats[_STAT_DIR_CREATE].counter++;
if(stats[_STAT_DIR_CREATE].speed < stats[_STAT_DIR_CREATE].best)
stats[_STAT_DIR_CREATE].best=stats[_STAT_DIR_CREATE].speed;
if(stats[_STAT_DIR_CREATE].speed > stats[_STAT_DIR_CREATE].worst)
stats[_STAT_DIR_CREATE].worst=stats[_STAT_DIR_CREATE].speed;
chdir(buf);
for(j=0; j<x; j++)
{
sprintf(buf,"iozone_L1_%d_L2_%d",i,j);
stats[_STAT_DIR_CREATE].starttime=time_so_far();
ret=mkdir(buf,0777);
if(ret < 0)
{
printf("Mkdir failed\n");
exit(1);
}
stats[_STAT_DIR_CREATE].endtime=time_so_far();
stats[_STAT_DIR_CREATE].speed=stats[_STAT_DIR_CREATE].endtime-stats[_STAT_DIR_CREATE].starttime;
if(stats[_STAT_DIR_CREATE].speed < (double)0.0)
stats[_STAT_DIR_CREATE].speed=(double) 0.0;
stats[_STAT_DIR_CREATE].total_time+=stats[_STAT_DIR_CREATE].speed;
stats[_STAT_DIR_CREATE].counter++;
if(stats[_STAT_DIR_CREATE].speed < stats[_STAT_DIR_CREATE].best)
stats[_STAT_DIR_CREATE].best=stats[_STAT_DIR_CREATE].speed;
if(stats[_STAT_DIR_CREATE].speed > stats[_STAT_DIR_CREATE].worst)
stats[_STAT_DIR_CREATE].worst=stats[_STAT_DIR_CREATE].speed;
chdir(buf);
chdir("..");
}
chdir("..");
}
}
void
file_readdir(int x)
{
int i,j,ret1;
char buf[100];
DIR *dirbuf;
struct dirent *y;
stats[_STAT_READDIR].best=(double)999999.9;
stats[_STAT_READDIR].worst=(double)0.0;
for(i=0; i<x; i++)
{
sprintf(buf,"iozone_L1_%d",i);
chdir(buf);
for(j=0; j<x; j++)
{
sprintf(buf,"iozone_L1_%d_L2_%d",i,j);
chdir(buf);
dirbuf=opendir(".");
if(dirbuf==0)
{
printf("opendir failed\n");
exit(1);
}
stats[_STAT_READDIR].starttime=time_so_far();
y=readdir(dirbuf);
if(y == 0)
{
printf("readdir failed\n");
exit(1);
}
stats[_STAT_READDIR].endtime=time_so_far();
stats[_STAT_READDIR].speed=stats[_STAT_READDIR].endtime-stats[_STAT_READDIR].starttime;
if(stats[_STAT_READDIR].speed < (double)0.0)
stats[_STAT_READDIR].speed=(double)0.0;
stats[_STAT_READDIR].total_time+=stats[_STAT_READDIR].speed;
stats[_STAT_READDIR].counter++;
if(stats[_STAT_READDIR].speed < stats[_STAT_READDIR].best)
stats[_STAT_READDIR].best=stats[_STAT_READDIR].speed;
if(stats[_STAT_READDIR].speed > stats[_STAT_READDIR].worst)
stats[_STAT_READDIR].worst=stats[_STAT_READDIR].speed;
ret1=closedir(dirbuf);
if(ret1 < 0)
{
printf("closedir failed\n");
exit(1);
}
chdir("..");
}
chdir("..");
}
}
void
file_read(int x)
{
int i,j,k,y,fd;
char buf[100];
stats[_STAT_READ].best=(double)99999.9;
stats[_STAT_READ].worst=(double)0.00000000;
for(i=0; i<x; i++)
{
sprintf(buf,"iozone_L1_%d",i);
chdir(buf);
for(j=0; j<x; j++)
{
sprintf(buf,"iozone_L1_%d_L2_%d",i,j);
chdir(buf);
for(k=0; k<x; k++)
{
sprintf(buf,"iozone_file_%d_%d_%d",i,j,k);
fd=open(buf,O_RDONLY);
if(fd < 0)
{
printf("Open failed\n");
exit(1);
}
stats[_STAT_READ].starttime=time_so_far();
y=read(fd,mbuffer,sz);
if(y < 0)
{
printf("Read failed\n");
exit(1);
}
stats[_STAT_READ].endtime=time_so_far();
close(fd);
stats[_STAT_READ].speed=stats[_STAT_READ].endtime-stats[_STAT_READ].starttime;
if(stats[_STAT_READ].speed < (double)0.0)
stats[_STAT_READ].speed=(double)0.0;
stats[_STAT_READ].total_time+=stats[_STAT_READ].speed;
stats[_STAT_READ].counter++;
if(stats[_STAT_READ].speed < stats[_STAT_READ].best)
stats[_STAT_READ].best=stats[_STAT_READ].speed;
if(stats[_STAT_READ].speed > stats[_STAT_READ].worst)
stats[_STAT_READ].worst=stats[_STAT_READ].speed;
}
chdir("..");
}
chdir("..");
}
}
void
dir_delete(int x)
{
int i,j;
char buf[100];
stats[_STAT_DIR_DELETE].best=(double)99999.9;
stats[_STAT_DIR_DELETE].worst=(double)0.00000000;
for(i=0; i<x; i++)
{
sprintf(buf,"iozone_L1_%d",i);
chdir(buf);
for(j=0; j<x; j++)
{
sprintf(buf,"iozone_L1_%d_L2_%d",i,j);
chdir(buf);
chdir("..");
sprintf(buf,"iozone_L1_%d_L2_%d",i,j);
stats[_STAT_DIR_DELETE].starttime=time_so_far();
rmdir(buf);
stats[_STAT_DIR_DELETE].endtime=time_so_far();
stats[_STAT_DIR_DELETE].speed=stats[_STAT_DIR_DELETE].endtime-stats[_STAT_DIR_DELETE].starttime;
if(stats[_STAT_DIR_DELETE].speed < (double)0.0)
stats[_STAT_DIR_DELETE].speed=(double)0.0;
stats[_STAT_DIR_DELETE].total_time+=stats[_STAT_DIR_DELETE].speed;
stats[_STAT_DIR_DELETE].counter++;
if(stats[_STAT_DIR_DELETE].speed < stats[_STAT_DIR_DELETE].best)
stats[_STAT_DIR_DELETE].best=stats[_STAT_DIR_DELETE].speed;
if(stats[_STAT_DIR_DELETE].speed > stats[_STAT_DIR_DELETE].worst)
stats[_STAT_DIR_DELETE].worst=stats[_STAT_DIR_DELETE].speed;
}
chdir("..");
sprintf(buf,"iozone_L1_%d",i);
stats[_STAT_DIR_DELETE].starttime=time_so_far();
rmdir(buf);
stats[_STAT_DIR_DELETE].endtime=time_so_far();
stats[_STAT_DIR_DELETE].speed=stats[_STAT_DIR_DELETE].endtime-stats[_STAT_DIR_DELETE].starttime;
if(stats[_STAT_DIR_DELETE].speed < (double)0.0)
stats[_STAT_DIR_DELETE].speed=(double)0.0;
stats[_STAT_DIR_DELETE].total_time+=stats[_STAT_DIR_DELETE].speed;
stats[_STAT_DIR_DELETE].counter++;
if(stats[_STAT_DIR_DELETE].speed < stats[_STAT_DIR_DELETE].best)
stats[_STAT_DIR_DELETE].best=stats[_STAT_DIR_DELETE].speed;
if(stats[_STAT_DIR_DELETE].speed > stats[_STAT_DIR_DELETE].worst)
stats[_STAT_DIR_DELETE].worst=stats[_STAT_DIR_DELETE].speed;
}
}
void
file_unlink(int x)
{
int i,j,k,y;
char buf[100];
char bufn[100];
stats[_STAT_UNLINK].best=(double)999999.9;
stats[_STAT_UNLINK].worst=(double)0.0;
for(i=0; i<x; i++)
{
sprintf(buf,"iozone_L1_%d",i);
chdir(buf);
for(j=0; j<x; j++)
{
sprintf(buf,"iozone_L1_%d_L2_%d",i,j);
chdir(buf);
for(k=0; k<x; k++)
{
sprintf(buf,"iozone_file_%d_%d_%d",i,j,k);
sprintf(bufn,"iozone_file_%d_%d_%dL",i,j,k);
stats[_STAT_UNLINK].starttime=time_so_far();
y=unlink(bufn);
if(y < 0)
{
printf("Unlink failed\n");
exit(1);
}
stats[_STAT_UNLINK].endtime=time_so_far();
stats[_STAT_UNLINK].speed=stats[_STAT_UNLINK].endtime-stats[_STAT_UNLINK].starttime;
if(stats[_STAT_UNLINK].speed < (double)0.0)
stats[_STAT_UNLINK].speed=(double)0.0;
stats[_STAT_UNLINK].total_time+=stats[_STAT_UNLINK].speed;
stats[_STAT_UNLINK].counter++;
if(stats[_STAT_UNLINK].speed < stats[_STAT_UNLINK].best)
stats[_STAT_UNLINK].best=stats[_STAT_UNLINK].speed;
if(stats[_STAT_UNLINK].speed > stats[_STAT_UNLINK].worst)
stats[_STAT_UNLINK].worst=stats[_STAT_UNLINK].speed;
}
chdir("..");
}
chdir("..");
}
}
void
file_access(int x)
{
int i,j,k,y;
char buf[100];
stats[_STAT_ACCESS].best=(double)999999.9;
stats[_STAT_ACCESS].worst=(double)0.0;
for(i=0;i<x;i++)
{
sprintf(buf,"fileop_L1_%d",i);
chdir(buf);
for(j=0;j<x;j++)
{
sprintf(buf,"fileop_L1_%d_L2_%d",i,j);
chdir(buf);
for(k=0;k<x;k++)
{
sprintf(buf,"fileop_file_%d_%d_%d",i,j,k);
stats[_STAT_ACCESS].starttime=time_so_far();
y=access(buf,W_OK|F_OK);
if(y < 0)
{
printf("access failed\n");
perror("what");
exit(1);
}
stats[_STAT_ACCESS].endtime=time_so_far();
stats[_STAT_ACCESS].speed=stats[_STAT_ACCESS].endtime-stats[_STAT_ACCESS].starttime;
if(stats[_STAT_ACCESS].speed < (double)0.0)
stats[_STAT_ACCESS].speed=(double)0.0;
stats[_STAT_ACCESS].total_time+=stats[_STAT_ACCESS].speed;
stats[_STAT_ACCESS].counter++;
if(stats[_STAT_ACCESS].speed < stats[_STAT_ACCESS].best)
stats[_STAT_ACCESS].best=stats[_STAT_ACCESS].speed;
if(stats[_STAT_ACCESS].speed > stats[_STAT_ACCESS].worst)
stats[_STAT_ACCESS].worst=stats[_STAT_ACCESS].speed;
}
chdir("..");
}
chdir("..");
}
}
void
file_chmod(int x)
{
int i,j,k,y;
char buf[100];
stats[_STAT_CHMOD].best=(double)999999.9;
stats[_STAT_CHMOD].worst=(double)0.0;
for(i=0; i<x; i++)
{
sprintf(buf,"iozone_L1_%d",i);
chdir(buf);
for(j=0; j<x; j++)
{
sprintf(buf,"iozone_L1_%d_L2_%d",i,j);
chdir(buf);
for(k=0; k<x; k++)
{
sprintf(buf,"iozone_file_%d_%d_%d",i,j,k);
stats[_STAT_CHMOD].starttime=time_so_far();
y=chmod(buf,0666);
if(y < 0)
{
printf("chmod failed\n");
perror("what");
exit(1);
}
stats[_STAT_CHMOD].endtime=time_so_far();
stats[_STAT_CHMOD].speed=stats[_STAT_CHMOD].endtime-stats[_STAT_CHMOD].starttime;
if(stats[_STAT_CHMOD].speed < (double)0.0)
stats[_STAT_CHMOD].speed=(double)0.0;
stats[_STAT_CHMOD].total_time+=stats[_STAT_CHMOD].speed;
stats[_STAT_CHMOD].counter++;
if(stats[_STAT_CHMOD].speed < stats[_STAT_CHMOD].best)
stats[_STAT_CHMOD].best=stats[_STAT_CHMOD].speed;
if(stats[_STAT_CHMOD].speed > stats[_STAT_CHMOD].worst)
stats[_STAT_CHMOD].worst=stats[_STAT_CHMOD].speed;
}
chdir("..");
}
chdir("..");
}
}
void
file_stat(int x)
{
int i,j,k,y;
char buf[100];
struct stat mystat;
stats[_STAT_STAT].best=(double)99999.9;
stats[_STAT_STAT].worst=(double)0.00000000;
for(i=0;i<x;i++)
{
sprintf(buf,"fileop_L1_%d",i);
chdir(buf);
for(j=0;j<x;j++)
{
sprintf(buf,"fileop_L1_%d_L2_%d",i,j);
chdir(buf);
for(k=0;k<x;k++)
{
sprintf(buf,"fileop_file_%d_%d_%d",i,j,k);
stats[_STAT_STAT].starttime=time_so_far();
y=stat(buf,&mystat);
if(y < 0)
{
printf("Stat failed\n");
exit(1);
}
stats[_STAT_STAT].endtime=time_so_far();
stats[_STAT_STAT].speed=stats[_STAT_STAT].endtime-stats[_STAT_STAT].starttime;
if(stats[_STAT_STAT].speed < (double)0.0)
stats[_STAT_STAT].speed=(double)0.0;
stats[_STAT_STAT].total_time+=stats[_STAT_STAT].speed;
stats[_STAT_STAT].counter++;
if(stats[_STAT_STAT].speed < stats[_STAT_STAT].best)
stats[_STAT_STAT].best=stats[_STAT_STAT].speed;
if(stats[_STAT_STAT].speed > stats[_STAT_STAT].worst)
stats[_STAT_STAT].worst=stats[_STAT_STAT].speed;
}
chdir("..");
}
chdir("..");
}
}
void
file_delete(int x)
{
int i,j,k;
char buf[100];
stats[_STAT_DELETE].best=(double)999999.9;
stats[_STAT_DELETE].worst=(double)0.0;
for(i=0;i<x;i++)
{
sprintf(buf,"fileop_L1_%d",i);
chdir(buf);
for(j=0;j<x;j++)
{
sprintf(buf,"fileop_L1_%d_L2_%d",i,j);
chdir(buf);
for(k=0;k<x;k++)
{
sprintf(buf,"fileop_file_%d_%d_%d",i,j,k);
stats[_STAT_DELETE].starttime=time_so_far();
unlink(buf);
stats[_STAT_DELETE].endtime=time_so_far();
stats[_STAT_DELETE].speed=stats[_STAT_DELETE].endtime-stats[_STAT_DELETE].starttime;
if(stats[_STAT_DELETE].speed < (double)0.0)
stats[_STAT_DELETE].speed=(double)0.0;
stats[_STAT_DELETE].total_time+=stats[_STAT_DELETE].speed;
stats[_STAT_DELETE].counter++;
if(stats[_STAT_DELETE].speed < stats[_STAT_DELETE].best)
stats[_STAT_DELETE].best=stats[_STAT_DELETE].speed;
if(stats[_STAT_DELETE].speed > stats[_STAT_DELETE].worst)
stats[_STAT_DELETE].worst=stats[_STAT_DELETE].speed;
}
chdir("..");
sprintf(buf,"fileop_L1_%d_L2_%d",i,j);
rmdir(buf);
}
chdir("..");
sprintf(buf,"fileop_L1_%d",i);
rmdir(buf);
}
}
int main(int argc , char **argv)
{
#if PRINT_TIME
double start, end;
#endif
extract_arguments(argc, argv);
#if PRINT_TIME
start = time_so_far();
#endif
if(mr_init())
exit(EXIT_FAILURE);
start_threads();
wait_threads();
if(mr_reduce())
exit(EXIT_FAILURE);
#if PRINT_TIME
/* Done here, to avoid counting the printing... */
end = time_so_far();
#endif
if(mr_print())
exit(EXIT_FAILURE);
if(mr_destroy())
exit(EXIT_FAILURE);
#if PRINT_TIME
printf("Done in %g msec\n", end-start);
#endif
exit(EXIT_SUCCESS);
}
void random_perf_test(off64_t kilo64,long long reclen,long long *data1,long long *data2)
{
double randreadtime[2];
double starttime2;
double walltime[2], cputime[2];
double compute_val = (double)0;
unsigned long long big_rand;
long long j;
off64_t i,numrecs64;
long long Index=0;
int flags;
unsigned long long randreadrate[2];
off64_t filebytes64;
off64_t lock_offset=0;
volatile char *buffer1;
char *wmaddr,*nbuff;
char *maddr,*free_addr;
int fd,wval;
long long *recnum= 0;
long long *gc=0;
char *filename = "/mnt/ramdisk/test1";
maddr=free_addr=0;
numrecs64 = (kilo64*1024)/reclen;
srand48(0);
recnum = (long long *)malloc(sizeof(*recnum)*numrecs64);
if (recnum){
/* pre-compute random sequence based on
Fischer-Yates (Knuth) card shuffle */
for(i = 0; i < numrecs64; i++){
recnum[i] = i;
}
for(i = 0; i < numrecs64; i++) {
long long tmp;
big_rand = lrand48();
big_rand = big_rand%numrecs64;
tmp = recnum[i];
recnum[i] = recnum[big_rand];
recnum[big_rand] = tmp;
}
}
else
{
fprintf(stderr,"Random uniqueness fallback.\n");
}
flags = O_RDWR;
fd=0;
filebytes64 = numrecs64*reclen;
for( j=0; j<2; j++ )
{
if(j==0)
flags |=O_CREAT;
if((fd = open(filename, ((int)flags),0640))<0){
printf("\nCan not open temporary file for read/write\n");
perror("open");
exit(66);
}
nbuff=mainbuffer;
srand48(0);
compute_val=(double)0;
starttime2 = time_so_far();
if ( j==0 ){
for(i=0; i<numrecs64; i++) {
if (recnum) {
offset64 = reclen * (long long)recnum[i];
}
else
{
offset64 = reclen * (lrand48()%numrecs64);
}
if(lseek( fd, offset64, SEEK_SET )<0)
{
perror("lseek");
exit(68);
}
if(read(fd, (void *)nbuff, (size_t)reclen) != reclen)
{
#ifdef NO_PRINT_LLD
printf("\nError reading block at %ld\n",
offset64);
#else
printf("\nError reading block at %lld\n",
offset64);
#endif
perror("read");
exit(70);
}
}
}
else
{
for(i=0; i<numrecs64; i++)
{
if (recnum) {
offset64 = reclen * (long long)recnum[i];
}
else
{
offset64 = reclen * (lrand48()%numrecs64);
}
lseek( fd, offset64, SEEK_SET );
wval=write(fd, nbuff,(size_t)reclen);
if(wval != reclen)
{
#ifdef NO_PRINT_LLD
printf("\nError writing block at %ld\n",
offset64);
#else
printf("\nError writing block at %lld\n",
offset64);
#endif
if(wval==-1)
perror("write");
}
}
} /* end of modifications *kcollins:2-5-96 */
randreadtime[j] = ((time_so_far() - starttime2))-
compute_val;
if(randreadtime[j] < (double).000001)
{
randreadtime[j]=(double).000001;
}
wval=fsync(fd);
if(wval==-1){
perror("fsync");
// signal_handler();
}
wval=close(fd);
if(wval==-1){
perror("close");
// signal_handler();
}
}
for(j=0;j<2;j++)
{
randreadrate[j] =
(unsigned long long) ((double) filebytes64 / randreadtime[j]);
printf("%s: ltest %d randomrate %llu\n", __func__, j, randreadrate[j]);
}
/* Must save walltime & cputime before calling store_value() for each/any cell.*/
if(recnum)
free(recnum);
}
/**
* main program logic
*/
int main(int argc, char *argv[])
{
FILE *fhProcStat; // file handle for /proc/stat
FILE *fhOutput; // the file we want to write to
// needed time values
double dOldTime = -1; // will hold the time from the previous iteration
double dNewTime = -1; // will hold the current time
char cpu_text[10]; // needed for running fscanf on the first row of /proc/stat
int bit_stream_dec[5]; // will hold the bit stream we want to send as decimal values
char bit_stream_hex[10];// will hold the bit stream we want to send as hex values
// previous iteration
int iUserTimeOld; // user: normal processes executing in user mode
int iNiceTimeOld; // nice: niced processes executing in user mode
int iSystemTimeOld; // system: processes executing in kernel mode
// current iteration
int iUserTimeNew; // user: normal processes executing in user mode
int iNiceTimeNew; // nice: niced processes executing in user mode
int iSystemTimeNew; // system: processes executing in kernel mode
bool bIsFirstIteration = true;
int iCpuTimeTotal = -1;
int iCpuUsage = -1; // calculated cpu usage
int iCpuUsageScaled = -1; // cpu usage scaled to 40 since we have 40 leds
// set up interrupt handler so we can exit gracefully
signal(SIGINT, intHandler);
// check if the output file was supplied
if(argc != 2)
{
/* We print argv[0] assuming it is the program name */
printf( "usage: %s /some/file \n", argv[0] );
return 0;
}
// open the output file for writing
fhOutput = fopen(argv[1], "w");
while(keepRunning)
{
// get the current time with microsecond accuracy (seconds.microseconds)
dNewTime = time_so_far();
// re-open the file to read the new values
fhProcStat = fopen("/proc/stat", "r");
/* we're only interested in the first line since it aggregates the values
* from the individual cores
* 1st line example: cpu 54095 7770 22351 2252753 27278 0 1483 0 0 0
*
* we are only interested in the first 3 values. these represent CPU time spent for:
* - user: normal processes executing in user mode
* - nice: niced processes executing in user mode
* - system: processes executing in kernel mode
*
* more info at: http://kernel.org/doc/Documentation/filesystems/proc.txt
*/
fscanf(fhProcStat, "%s\t%d\t%d\t%d\n", cpu_text,
&iUserTimeNew, &iNiceTimeNew, &iSystemTimeNew);
// close file again
fclose(fhProcStat);
// we can't calculate cpu usage in the first iteration
if(bIsFirstIteration)
{
bIsFirstIteration = false;
}
else
{
// calculate the total cpu time for this iteration
iCpuTimeTotal = (iUserTimeNew + iNiceTimeNew + iSystemTimeNew) - (iUserTimeOld + iNiceTimeOld + iSystemTimeOld);
// calculate cpu usage in percent
iCpuUsage = (iCpuTimeTotal / ((dNewTime - dOldTime) * 100)) * 100;
// write to stdout
//printf("cpu usage: %i%\n", iCpuUsage);
printf("%i\n", iCpuUsage);
// scale to 40
iCpuUsageScaled = scaleFromTo(iCpuUsage, 100, 40);
//printf("cpu usage scaled: %i\n", iCpuUsageScaled);
// create bitstream
generateBitStream(iCpuUsageScaled, bit_stream_dec);
// convert the values to hex
bitStreamToHex(bit_stream_dec, bit_stream_hex);
//fprintf(fhOutput, "%i\n", iCpuUsageScaled);
// write to output file
// we need a loop since c will print elements 0,1,...
// but we need MSB first...
int i;
for(i = 9; i >= 0; i=i-2)
{
//printf("%c", bit_stream_hex[i-1]);
//fprintf(fhOutput, "%c", bit_stream_hex[i-1]);
//printf("%c", bit_stream_hex[i]);
//fprintf(fhOutput, "%c", bit_stream_hex[i]);
}
//printf("\n");
//fprintf(fhOutput, "\n");
} //endif
// set previous values for the next iteration
dOldTime = dNewTime;
iUserTimeOld = iUserTimeNew;
iNiceTimeOld = iNiceTimeNew;
iSystemTimeOld = iSystemTimeNew;
// wait for one second
sleep(1);
} //endwhile true
// close output file
fclose(fhOutput);
// app has finished successfully
return 0;
} //endmethod main
void
file_create(int x)
{
int i,j,k;
int fd;
int ret;
char buf[100];
stats[_STAT_CREATE].best=(double)999999.9;
stats[_STAT_CREATE].worst=(double)0.0;
stats[_STAT_WRITE].best=(double)999999.9;
stats[_STAT_WRITE].worst=(double)0.0;
stats[_STAT_CLOSE].best=(double)999999.9;
stats[_STAT_CLOSE].worst=(double)0.0;
for(i=0; i<x; i++)
{
sprintf(buf,"iozone_L1_%d",i);
ret=mkdir(buf,0777);
if(ret < 0)
{
printf("Mkdir failed\n");
exit(1);
}
chdir(buf);
for(j=0; j<x; j++)
{
sprintf(buf,"iozone_L1_%d_L2_%d",i,j);
ret=mkdir(buf,0777);
if(ret < 0)
{
printf("Mkdir failed\n");
exit(1);
}
chdir(buf);
for(k=0; k<x; k++)
{
sprintf(buf,"iozone_file_%d_%d_%d",i,j,k);
stats[_STAT_CREATE].starttime=time_so_far();
fd=creat(buf,O_RDWR|0600);
if(fd < 0)
{
printf("Create failed\n");
exit(1);
}
stats[_STAT_CREATE].endtime=time_so_far();
stats[_STAT_CREATE].speed=stats[_STAT_CREATE].endtime-stats[_STAT_CREATE].starttime;
if(stats[_STAT_CREATE].speed < (double)0.0)
stats[_STAT_CREATE].speed=(double)0.0;
stats[_STAT_CREATE].total_time+=stats[_STAT_CREATE].speed;
stats[_STAT_CREATE].counter++;
if(stats[_STAT_CREATE].speed < stats[_STAT_CREATE].best)
stats[_STAT_CREATE].best=stats[_STAT_CREATE].speed;
if(stats[_STAT_CREATE].speed > stats[_STAT_CREATE].worst)
stats[_STAT_CREATE].worst=stats[_STAT_CREATE].speed;
stats[_STAT_WRITE].starttime=time_so_far();
write(fd,mbuffer,sz);
stats[_STAT_WRITE].endtime=time_so_far();
stats[_STAT_WRITE].counter++;
stats[_STAT_WRITE].speed=stats[_STAT_WRITE].endtime-stats[_STAT_WRITE].starttime;
if(stats[_STAT_WRITE].speed < (double)0.0)
stats[_STAT_WRITE].speed=(double)0.0;
stats[_STAT_WRITE].total_time+=stats[_STAT_WRITE].speed;
if(stats[_STAT_WRITE].speed < stats[_STAT_WRITE].best)
stats[_STAT_WRITE].best=stats[_STAT_WRITE].speed;
if(stats[_STAT_WRITE].speed > stats[_STAT_WRITE].worst)
stats[_STAT_WRITE].worst=stats[_STAT_WRITE].speed;
fsync(fd);
stats[_STAT_CLOSE].starttime=time_so_far();
close(fd);
stats[_STAT_CLOSE].endtime=time_so_far();
stats[_STAT_CLOSE].speed=stats[_STAT_CLOSE].endtime-stats[_STAT_CLOSE].starttime;
if(stats[_STAT_CLOSE].speed < (double)0.0)
stats[_STAT_CLOSE].speed=(double)0.0;
stats[_STAT_CLOSE].total_time+=stats[_STAT_CLOSE].speed;
stats[_STAT_CLOSE].counter++;
if(stats[_STAT_CLOSE].speed < stats[_STAT_CLOSE].best)
stats[_STAT_CLOSE].best=stats[_STAT_CLOSE].speed;
if(stats[_STAT_CLOSE].speed > stats[_STAT_CLOSE].worst)
stats[_STAT_CLOSE].worst=stats[_STAT_CLOSE].speed;
}
chdir("..");
}
chdir("..");
}
}
main(
int argc,
char * argv[])
{
int buf[Chunk / IntSize];
int bufindex;
int chars[256];
int child;
char * dir;
int html = 0;
int fd;
double first_start;
double last_stop;
int lseek_count = 0;
char * machine;
char name[Chunk];
int next;
int seek_control[2];
int seek_feedback[2];
char seek_tickets[Seeks + SeekProcCount];
double seeker_report[3];
off_t size;
FILE * stream;
off_t words;
fd = -1;
basetime = (int) time((time_t *) NULL);
size = 100;
dir = ".";
machine = "";
/* pick apart args */
for (next = 1; next < argc; next++)
if (strcmp(argv[next], "-d") == 0)
dir = argv[++next];
else if (strcmp(argv[next], "-s") == 0)
size = atol(argv[++next]);
else if (strcmp(argv[next], "-m") == 0)
machine = argv[++next];
else if (strcmp(argv[next], "-html") == 0)
html = 1;
else
usage();
if (size < 1)
usage();
/* sanity check - 32-bit machines can't handle more than 2047 Mb */
if (sizeof(off_t) <= 4 && size > 2047)
{
fprintf(stderr, "File too large for 32-bit machine, sorry\n");
exit(1);
}
sprintf(name, "%s/Bonnie.%d", dir, getpid());
/* size is in meg, rounded down to multiple of Chunk */
size *= (1024 * 1024);
size = Chunk * (size / Chunk);
fprintf(stderr, "File '%s', size: %ld\n", name, size);
/* Fill up a file, writing it a char at a time with the stdio putc() call */
fprintf(stderr, "Writing with putc()...");
newfile(name, &fd, &stream, 1);
timestamp();
for (words = 0; words < size; words++)
if (putc(words & 0x7f, stream) == EOF)
io_error("putc");
/*
* note that we always close the file before measuring time, in an
* effort to force as much of the I/O out as we can
*/
if (fclose(stream) == -1)
io_error("fclose after putc");
get_delta_t(Putc);
fprintf(stderr, "done\n");
/* Now read & rewrite it using block I/O. Dirty one word in each block */
newfile(name, &fd, &stream, 0);
if (lseek(fd, (off_t) 0, 0) == (off_t) -1)
io_error("lseek(2) before rewrite");
fprintf(stderr, "Rewriting...");
timestamp();
bufindex = 0;
if ((words = read(fd, (char *) buf, Chunk)) == -1)
io_error("rewrite read");
while (words == Chunk)
{ /* while we can read a block */
if (bufindex == Chunk / IntSize)
bufindex = 0;
buf[bufindex++]++;
if (lseek(fd, (off_t) -words, 1) == -1)
io_error("relative lseek(2)");
if (write(fd, (char *) buf, words) == -1)
io_error("re write(2)");
if ((words = read(fd, (char *) buf, Chunk)) == -1)
io_error("rwrite read");
} /* while we can read a block */
if (close(fd) == -1)
io_error("close after rewrite");
get_delta_t(ReWrite);
fprintf(stderr, "done\n");
/* Write the whole file from scratch, again, with block I/O */
newfile(name, &fd, &stream, 1);
fprintf(stderr, "Writing intelligently...");
for (words = 0; words < Chunk / IntSize; words++)
buf[words] = 0;
timestamp();
for (words = bufindex = 0; words < (size / Chunk); words++)
{ /* for each word */
if (bufindex == (Chunk / IntSize))
bufindex = 0;
buf[bufindex++]++;
if (write(fd, (char *) buf, Chunk) == -1)
io_error("write(2)");
} /* for each word */
if (close(fd) == -1)
io_error("close after fast write");
get_delta_t(FastWrite);
fprintf(stderr, "done\n");
/* read them all back with getc() */
newfile(name, &fd, &stream, 0);
for (words = 0; words < 256; words++)
chars[words] = 0;
fprintf(stderr, "Reading with getc()...");
timestamp();
for (words = 0; words < size; words++)
{ /* for each byte */
if ((next = getc(stream)) == EOF)
io_error("getc(3)");
/* just to fool optimizers */
chars[next]++;
} /* for each byte */
if (fclose(stream) == -1)
io_error("fclose after getc");
get_delta_t(Getc);
fprintf(stderr, "done\n");
/* use the frequency count */
for (words = 0; words < 256; words++)
sprintf((char *) buf, "%d", chars[words]);
/* Now suck it in, Chunk at a time, as fast as we can */
newfile(name, &fd, &stream, 0);
if (lseek(fd, (off_t) 0, 0) == -1)
io_error("lseek before read");
fprintf(stderr, "Reading intelligently...");
timestamp();
do
{ /* per block */
if ((words = read(fd, (char *) buf, Chunk)) == -1)
io_error("read(2)");
chars[buf[abs(buf[0]) % (Chunk / IntSize)] & 0x7f]++;
} /* per block */
while (words);
if (close(fd) == -1)
io_error("close after read");
get_delta_t(FastRead);
fprintf(stderr, "done\n");
/* use the frequency count */
for (words = 0; words < 256; words++)
sprintf((char *) buf, "%d", chars[words]);
/*
* Now test random seeks; first, set up for communicating with children.
* The object of the game is to do "Seeks" lseek() calls as quickly
* as possible. So we'll farm them out among SeekProcCount processes.
* We'll control them by writing 1-byte tickets down a pipe which
* the children all read. We write "Seeks" bytes with val 1, whichever
* child happens to get them does it and the right number of seeks get
* done.
* The idea is that since the write() of the tickets is probably
* atomic, the parent process likely won't get scheduled while the
* children are seeking away. If you draw a picture of the likely
* timelines for three children, it seems likely that the seeks will
* overlap very nicely with the process scheduling with the effect
* that there will *always* be a seek() outstanding on the file.
* Question: should the file be opened *before* the fork, so that
* all the children are lseeking on the same underlying file object?
*/
if (pipe(seek_feedback) == -1 || pipe(seek_control) == -1)
io_error("pipe");
for (next = 0; next < Seeks; next++)
seek_tickets[next] = 1;
for ( ; next < (Seeks + SeekProcCount); next++)
seek_tickets[next] = 0;
/* launch some parallel seek processes */
for (next = 0; next < SeekProcCount; next++)
{ /* for each seek proc */
if ((child = fork()) == -1)
io_error("fork");
else if (child == 0)
{ /* child process */
/* set up and wait for the go-ahead */
close(seek_feedback[0]);
close(seek_control[1]);
newfile(name, &fd, &stream, 0);
srandom(getpid());
fprintf(stderr, "Seeker %d...", next + 1);
/* wait for the go-ahead */
if (read(seek_control[0], seek_tickets, 1) != 1)
io_error("read ticket");
timestamp();
seeker_report[StartTime] = time_so_far();
/* loop until we read a 0 ticket back from our parent */
while(seek_tickets[0])
{ /* until Mom says stop */
doseek((long) (random() % (size / Chunk)), fd,
((lseek_count++ % UpdateSeek) == 0));
if (read(seek_control[0], seek_tickets, 1) != 1)
io_error("read ticket");
} /* until Mom says stop */
if (close(fd) == -1)
io_error("close after seek");
/* report to parent */
get_delta_t(Lseek);
seeker_report[EndTime] = time_so_far();
seeker_report[CPU] = delta[(int) Lseek][CPU];
if (write(seek_feedback[1], seeker_report, sizeof(seeker_report))
!= sizeof(seeker_report))
io_error("pipe write");
exit(0);
} /* child process */
} /* for each seek proc */
/*
* Back in the parent; in an effort to ensure the children get an even
* start, wait a few seconds for them to get scheduled, open their
* files & so on.
*/
close(seek_feedback[1]);
close(seek_control[0]);
sleep(5);
fprintf(stderr, "start 'em...");
if (write(seek_control[1], seek_tickets, sizeof(seek_tickets))
!= sizeof(seek_tickets))
io_error("write tickets");
/* read back from children */
for (next = 0; next < SeekProcCount; next++)
{ /* for each child */
if (read(seek_feedback[0], (char *) seeker_report, sizeof(seeker_report))
!= sizeof(seeker_report))
io_error("pipe read");
/*
* each child writes back its CPU, start & end times. The elapsed time
* to do all the seeks is the time the first child started until the
* time the last child stopped
*/
delta[(int) Lseek][CPU] += seeker_report[CPU];
if (next == 0)
{ /* first time */
first_start = seeker_report[StartTime];
last_stop = seeker_report[EndTime];
} /* first time */
else
{ /* not first time */
first_start = (first_start < seeker_report[StartTime]) ?
first_start : seeker_report[StartTime];
last_stop = (last_stop > seeker_report[EndTime]) ?
last_stop : seeker_report[EndTime];
} /* not first time */
if (wait(&child) == -1)
io_error("wait");
fprintf(stderr, "done...");
} /* for each child */
fprintf(stderr, "\n");
delta[(int) Lseek][Elapsed] = last_stop - first_start;
if (html)
write_html(machine, size);
else
report(machine, size);
unlink(name);
}
void
read_perf_test(unsigned long kilo64,long long reclen,long long *data1,long long *data2)
{
double starttime2;
double compute_val = (double)0;
double readtime[2];
double walltime[2], cputime[2];
long long j;
long long traj_size;
unsigned long i,numrecs64,traj_offset;
unsigned long lock_offset=0;
long long Index = 0;
unsigned long long readrate[2];
unsigned long filebytes64;
volatile char *buffer1;
char *nbuff;
int fd,open_flags;
int test_foo,ltest;
long wval;
double qtime_start,qtime_stop;
double hist_time;
unsigned long r_traj_ops_completed=0;
unsigned long r_traj_bytes_completed=0;
long long *gc=0;
char *filename = "/mnt/ramdisk/test1";
size_t len = reclen;
struct timespec start, end;
long long time;
hist_time=qtime_start=qtime_stop=0;
traj_offset=0;
test_foo=0;
numrecs64 = (kilo64*1024)/reclen;
open_flags = O_RDONLY;
filebytes64 = numrecs64*reclen;
fd = 0;
// mainbuffer = (char *)malloc(4 * 1024 * 4096);
/*
* begin real testing
*/
ltest=3;
printf("%s: filename %s, test %d, reclen %lld, numrecs64 %llu, filebytes64 %llu\n", __func__, filename, ltest, reclen, numrecs64, filebytes64);
// fd = open(filename, open_flags,0640);
for( j=0; j<ltest; j++ )
{
// lseek(fd,0,SEEK_SET);
if((fd = open(filename, open_flags,0))<0)
{
printf("\nCan not open temporary file %s for read\n",filename);
perror("open");
exit(58);
}
printf("fd: %d, reclen %lu\n", fd, reclen);
fsync(fd);
/*
* Need to prime the instruction cache & TLB
*/
nbuff=mainbuffer;
// read(fd, (void *)nbuff, (size_t)reclen);
// if(fetchon)
// fetchit(nbuff,reclen);
if(read(fd, (void *)nbuff, 4096) != reclen)
{
#ifdef _64BIT_ARCH_
printf("\nError reading block %d %llx\n", 0,
(unsigned long long)nbuff);
#else
printf("\nError reading block %d %lx\n", 0,
(long)nbuff);
#endif
perror("read");
exit(60);
}
lseek(fd,0,SEEK_SET);
nbuff=mainbuffer;
starttime2 = time_so_far();
compute_val=(double)0;
r_traj_ops_completed=0;
r_traj_bytes_completed=0;
clock_gettime(CLOCK_MONOTONIC, &start);
for(i=0; i<numrecs64; i++)
{
wval=read((int)fd, (void*)nbuff, 4096);
if(wval != reclen)
{
printf("\nError reading block %lld %llx\n", i,
(unsigned long long)nbuff);
perror("read");
exit(61);
}
r_traj_ops_completed++;
r_traj_bytes_completed+=reclen;
}
clock_gettime(CLOCK_MONOTONIC, &end);
time = (end.tv_sec - start.tv_sec) * 1e9 + (end.tv_nsec - start.tv_nsec);
printf("%lld ns\n", time);
readtime[j] = ((time_so_far() - starttime2))-compute_val;
if(readtime[j] < (double).000001)
{
readtime[j]= (double)0.000001;
}
fsync(fd);
close(fd);
}
filebytes64=r_traj_bytes_completed;
printf("%s: completed %llu\n", __func__, filebytes64);
for(j=0;j<ltest;j++)
{
readrate[j] =
(unsigned long long) ((double) filebytes64 / readtime[j]);
printf("%s: ltest %d readrate %llu\n", __func__, j, readrate[j]);
}
}
void
file_read(int x)
{
int i,j,k,y,fd;
char buf[100];
char value;
stats[_STAT_READ].best=(double)99999.9;
stats[_STAT_READ].worst=(double)0.00000000;
stats[_STAT_OPEN].best=(double)99999.9;
stats[_STAT_OPEN].worst=(double)0.00000000;
for(i=0;i<x;i++)
{
sprintf(buf,"fileop_L1_%d",i);
chdir(buf);
for(j=0;j<x;j++)
{
sprintf(buf,"fileop_L1_%d_L2_%d",i,j);
chdir(buf);
for(k=0;k<x;k++)
{
sprintf(buf,"fileop_file_%d_%d_%d",i,j,k);
value=(char)((i^j^k) &0xff);
stats[_STAT_OPEN].starttime=time_so_far();
fd=open(buf,O_RDONLY);
if(fd < 0)
{
printf("Open failed\n");
exit(1);
}
stats[_STAT_OPEN].endtime=time_so_far();
stats[_STAT_OPEN].speed=stats[_STAT_OPEN].endtime-stats[_STAT_OPEN].starttime;
if(stats[_STAT_OPEN].speed < (double)0.0)
stats[_STAT_OPEN].speed=(double)0.0;
stats[_STAT_OPEN].total_time+=stats[_STAT_OPEN].speed;
stats[_STAT_OPEN].counter++;
if(stats[_STAT_OPEN].speed < stats[_STAT_OPEN].best)
stats[_STAT_OPEN].best=stats[_STAT_OPEN].speed;
if(stats[_STAT_OPEN].speed > stats[_STAT_OPEN].worst)
stats[_STAT_OPEN].worst=stats[_STAT_OPEN].speed;
stats[_STAT_READ].starttime=time_so_far();
y=read(fd,mbuffer,sz);
if(y < 0)
{
printf("Read failed\n");
exit(1);
}
if(validate(mbuffer,sz, value) !=0)
printf("Error: Data Mis-compare\n");;
stats[_STAT_READ].endtime=time_so_far();
close(fd);
stats[_STAT_READ].speed=stats[_STAT_READ].endtime-stats[_STAT_READ].starttime;
if(stats[_STAT_READ].speed < (double)0.0)
stats[_STAT_READ].speed=(double)0.0;
stats[_STAT_READ].total_time+=stats[_STAT_READ].speed;
stats[_STAT_READ].counter++;
if(stats[_STAT_READ].speed < stats[_STAT_READ].best)
stats[_STAT_READ].best=stats[_STAT_READ].speed;
if(stats[_STAT_READ].speed > stats[_STAT_READ].worst)
stats[_STAT_READ].worst=stats[_STAT_READ].speed;
}
chdir("..");
}
chdir("..");
}
}
void
dir_traverse(int x)
{
int i,j,k;
char buf[100];
double time1, time2;
stats[_STAT_DIR_TRAVERSE].best=(double)99999.9;
stats[_STAT_DIR_TRAVERSE].worst=(double)0.00000000;
for(i=0;i<x;i++)
{
sprintf(buf,"fileop_L1_%d",i);
stats[_STAT_DIR_TRAVERSE].starttime=time_so_far();
chdir(buf);
stats[_STAT_DIR_TRAVERSE].endtime=time_so_far();
time1=stats[_STAT_DIR_TRAVERSE].endtime-stats[_STAT_DIR_TRAVERSE].starttime;
for(j=0;j<x;j++)
{
sprintf(buf,"fileop_L1_%d_L2_%d",i,j);
stats[_STAT_DIR_TRAVERSE].starttime=time_so_far();
chdir(buf);
stats[_STAT_DIR_TRAVERSE].endtime=time_so_far();
time2=stats[_STAT_DIR_TRAVERSE].endtime-stats[_STAT_DIR_TRAVERSE].starttime;
for(k=0;k<x;k++)
{
sprintf(buf,"fileop_dir_%d_%d_%d",i,j,k);
stats[_STAT_DIR_TRAVERSE].starttime=time_so_far();
chdir(buf);
chdir("..");
stats[_STAT_DIR_TRAVERSE].endtime=time_so_far();
stats[_STAT_DIR_TRAVERSE].speed=stats[_STAT_DIR_TRAVERSE].endtime-stats[_STAT_DIR_TRAVERSE].starttime;
if(stats[_STAT_DIR_TRAVERSE].speed < (double)0.0)
stats[_STAT_DIR_TRAVERSE].speed=(double) 0.0;
stats[_STAT_DIR_TRAVERSE].total_time+=stats[_STAT_DIR_TRAVERSE].speed;
stats[_STAT_DIR_TRAVERSE].counter++;
if(stats[_STAT_DIR_TRAVERSE].speed < stats[_STAT_DIR_TRAVERSE].best)
stats[_STAT_DIR_TRAVERSE].best=stats[_STAT_DIR_TRAVERSE].speed;
if(stats[_STAT_DIR_TRAVERSE].speed > stats[_STAT_DIR_TRAVERSE].worst)
stats[_STAT_DIR_TRAVERSE].worst=stats[_STAT_DIR_TRAVERSE].speed;
}
stats[_STAT_DIR_TRAVERSE].starttime=time_so_far();
chdir("..");
stats[_STAT_DIR_TRAVERSE].endtime=time_so_far();
stats[_STAT_DIR_TRAVERSE].speed=time2+stats[_STAT_DIR_TRAVERSE].endtime-stats[_STAT_DIR_TRAVERSE].starttime;
if(stats[_STAT_DIR_TRAVERSE].speed < (double)0.0)
stats[_STAT_DIR_TRAVERSE].speed=(double) 0.0;
stats[_STAT_DIR_TRAVERSE].total_time+=stats[_STAT_DIR_TRAVERSE].speed;
stats[_STAT_DIR_TRAVERSE].counter++;
if(stats[_STAT_DIR_TRAVERSE].speed < stats[_STAT_DIR_TRAVERSE].best)
stats[_STAT_DIR_TRAVERSE].best=stats[_STAT_DIR_TRAVERSE].speed;
if(stats[_STAT_DIR_TRAVERSE].speed > stats[_STAT_DIR_TRAVERSE].worst)
stats[_STAT_DIR_TRAVERSE].worst=stats[_STAT_DIR_TRAVERSE].speed;
}
stats[_STAT_DIR_TRAVERSE].starttime=time_so_far();
chdir("..");
stats[_STAT_DIR_TRAVERSE].endtime=time_so_far();
stats[_STAT_DIR_TRAVERSE].speed=time1+stats[_STAT_DIR_TRAVERSE].endtime-stats[_STAT_DIR_TRAVERSE].starttime;
if(stats[_STAT_DIR_TRAVERSE].speed < (double)0.0)
stats[_STAT_DIR_TRAVERSE].speed=(double)0.0;
stats[_STAT_DIR_TRAVERSE].total_time+=stats[_STAT_DIR_TRAVERSE].speed;
stats[_STAT_DIR_TRAVERSE].counter++;
if(stats[_STAT_DIR_TRAVERSE].speed < stats[_STAT_DIR_TRAVERSE].best)
stats[_STAT_DIR_TRAVERSE].best=stats[_STAT_DIR_TRAVERSE].speed;
if(stats[_STAT_DIR_TRAVERSE].speed > stats[_STAT_DIR_TRAVERSE].worst)
stats[_STAT_DIR_TRAVERSE].worst=stats[_STAT_DIR_TRAVERSE].speed;
}
}
static void
timestamp()
{
last_timestamp = time_so_far();
last_cpustamp = cpu_so_far();
}
void write_perf_test1(off64_t kilo64,long long reclen ,long long *data1,long long *data2)
{
double starttime1;
double writetime[2];
double walltime[2], cputime[2];
double qtime_start,qtime_stop;
double hist_time;
double compute_val = (double)0;
long long i,j;
off64_t numrecs64,traj_offset;
off64_t lock_offset=0;
long long Index = 0;
long long file_flags = 0;
long long traj_size;
unsigned long long writerate[2];
off64_t filebytes64;
int ltest;
char *maddr;
char *wmaddr,*free_addr;
char *pbuff;
char *nbuff;
int fd,wval;
int notruncate = 1;
unsigned long w_traj_ops_completed=0;
unsigned long w_traj_bytes_completed=0;
char *filename = "/mnt/ramdisk/test1";
int test_foo;
nbuff=wmaddr=free_addr=0;
traj_offset=0;
test_foo=0;
hist_time=qtime_start=qtime_stop=0;
maddr=0;
pbuff=mainbuffer;
numrecs64 = (kilo64*1024)/reclen;
filebytes64 = numrecs64*reclen;
fd = 0;
file_flags = O_RDWR;
/* Sanity check */
/* Some filesystems do not behave correctly and fail
* when this sequence is performned. This is a very
* bad thing. It breaks many applications and lurks
* around quietly. This code should never get
* triggered, but in the case of running iozone on
* an NFS client, the filesystem type on the server
* that is being exported can cause this failure.
* If this failure happens, then the NFS client is
* going to going to have problems, but the acutal
* problem is the filesystem on the NFS server.
* It's not NFS, it's the local filesystem on the
* NFS server that is not correctly permitting
* the sequence to function.
*/
/* _SUA_ Services for Unix Applications, under Windows
does not have a truncate, so this must be skipped */
if((fd = open(filename, (int)O_CREAT|O_RDWR,0))<0)
{
printf("\nCan not open temp file: %s\n",
filename);
perror("open");
exit(44);
}
if(!notruncate)
{
wval=ftruncate(fd,0);
if(wval < 0)
{
printf("\n\nSanity check failed. Do not deploy this filesystem in a production environment !\n");
exit(44);
}
close(fd);
}
/* Sanity check */
ltest=3;
for( j=0; j<ltest; j++)
{
if(j==0)
{
if(!notruncate)
{
if((fd = creat(filename, 0640))<0)
{
printf("\nCan not create temp file: %s\n",
filename);
perror("creat");
exit(42);
}
}
}
if(fd)
close(fd);
if((fd = open(filename, (int)file_flags,0))<0)
{
printf("\nCan not open temp file: %s\n",
filename);
perror("open");
exit(44);
}
wval=fsync(fd);
if(wval==-1){
perror("fsync");
}
pbuff=mainbuffer;
starttime1 = time_so_far();
compute_val=(double)0;
w_traj_ops_completed=0;
w_traj_bytes_completed=0;
for(i=0; i<numrecs64; i++){
wval=write(fd, pbuff, (size_t ) reclen);
if(wval != reclen)
{
#ifdef NO_PRINT_LLD
printf("\nError writing block %ld, fd= %d\n", i,
fd);
#else
printf("\nError writing block %lld, fd= %d\n", i,
fd);
#endif
if(wval == -1)
perror("write");
}
w_traj_ops_completed++;
w_traj_bytes_completed+=reclen;
}
writetime[j] = ((time_so_far() - starttime1))
-compute_val;
if(writetime[j] < (double).000001)
{
writetime[j]=(double).000001;
}
wval=close(fd);
if(wval==-1){
perror("close");
}
}
filebytes64=w_traj_bytes_completed;
for(j=0;j<ltest;j++)
{
writerate[j] =
(unsigned long long) ((double) filebytes64 / writetime[j]);
printf("%s: ltest %d writerate %llu\n", __func__, j, writerate[j]);
}
}