function main()
{
/****************************
* Model specific variables *
****************************/
$noNodes = 0;
$noStreams = 0;
$tech = APPROX;
// EXACT
$pop = 0;
$think = 0.0;
/************************
* Initialize the model *
************************/
/* Give model a name */
printf("**** %s ****:\n", $tech == EXACT ? "EXACT" : "APPROX");
printf("%s\t\t%s\t\t%s\t\t%s\t\t%s\n", "POP", "N:w1", "RESP:w1", "N:w2", "RESP:w2");
printf("-----------------------------------------------------------------------------\n");
for ($pop = 1; $pop < 10; $pop++) {
PDQ_Init("Test_Exact_calc");
/* Define the workload and circuit type */
$noStreams = PDQ_CreateClosed("w1", TERM, 1.0 * $pop, $think);
$noStreams = PDQ_CreateClosed("w2", TERM, 1.0 * $pop, $think);
/* Define the queueing center */
$noNodes = PDQ_CreateNode("node", CEN, FCFS);
/* Define service demand */
PDQ_SetDemand("node", "w1", 1.0);
PDQ_SetDemand("node", "w2", 0.5);
/*******************
* Solve the model *
*******************/
PDQ_Solve($tech);
printf("%d\t\t%d\t\t%3.4f\t\t%d\t\t%3.4f\n", $pop, getjob_pop(getjob_index("w1")), PDQ_GetResponse(TERM, "w1"), getjob_pop(getjob_index("w1")), PDQ_GetResponse(TERM, "w2"));
}
}
function main()
{
global $job;
/****************************
* Model specific variables *
****************************/
$noNodes = 0;
$noStreams = 0;
$pop = 0;
$servers = 2;
$s = 0;
$w = HOMEPG;
$work = array(0 => "stress", 1 => "homepg");
/* stress */
/* homepg */
$time = array(0 => 0.0044, 1 => 0.03);
$slave = array(0 => "slave0", "slave1", "slave2", "slave3", "slave4", "slave5", "slave6", "slave7", "slave8", "slave9", "slave10", "slave11", "slave12", "slave13", "slave14", "slave15");
if (PREFORK) {
printf("Pre-Fork Model under \"%s\" Load (m = %d)\n", $w == STRESS ? $work[STRESS] : $work[HOMEPG], $servers);
} else {
printf("Forking Model under \"%s\" Load \n", $w == STRESS ? $work[STRESS] : $work[HOMEPG]);
}
printf("N\tX\tR\n");
for ($pop = 1; $pop <= 10; $pop++) {
PDQ_Init("HTTPd_Server");
$noStreams = PDQ_CreateClosed($work[$w], TERM, 1.0 * $pop, 0.0);
$noNodes = PDQ_CreateNode("master", CEN, FCFS);
if (PREFORK) {
for ($s = 0; $s < $servers; $s++) {
$noNodes = PDQ_CreateNode($slave[$s], CEN, FCFS);
}
PDQ_SetDemand("master", $work[$w], 0.0109);
for ($s = 0; $s < $servers; $s++) {
PDQ_SetDemand($slave[$s], $work[$w], $time[$w] / $servers);
}
} else {
/* FORKING */
$noNodes = PDQ_CreateNode("forks", CEN, ISRV);
PDQ_SetDemand("master", $work[$w], 0.0165);
PDQ_SetDemand("forks", $work[$w], $time[$w]);
}
PDQ_Solve(EXACT);
printf("%3.2f\t%3.4f\t%3.4f\n", getjob_pop(getjob_index($work[$w])), PDQ_GetThruput(TERM, $work[$w]), PDQ_GetResponse(TERM, $work[$w]));
}
}
function PDQ_SetVisits($nodename, $workname, $visits, $service)
{
global $node;
// extern NODE_TYPE *
global $demand_ext;
// extern int
global $DEBUG;
// extern int
if ($DEBUG) {
printf("nodename : %s workname : %s visits : %f service : %f\n", $nodename, $workname, $visits, $service);
}
if ($demand_ext == VOID || $demand_ext == VISITS) {
$node[getnode_index($nodename)]->visits[getjob_index($workname)] = $visits;
$node[getnode_index($nodename)]->service[getjob_index($workname)] = $service;
$node[getnode_index($nodename)]->demand[getjob_index($workname)] = $visits * $service;
$demand_ext = VISITS;
} else {
errmsg("PDQ_SetVisits()", "Extension conflict");
}
}
function PDQ_GetQueueLength($device, $work, $should_be_class)
{
$p = "PDQ_GetQueueLength()";
// char *
global $s1;
//extern char[]
global $nodes, $node;
$q = 0.0;
// double
$x = 0.0;
// double
$c = 0;
// int
$k = 0;
// int
$c = getjob_index($work);
$x = PDQ_GetThruput($should_be_class, $work);
for ($k = 0; $k < $nodes; $k++) {
if ($device == $node[$k]->devname) {
$q = $node[$k]->resit[$c] * x;
return $q;
}
}
$s1 = sprintf("Unknown device %s", $device);
errmsg($p, $s1);
/*g_debug("PDQ_GetQueueLength - Bad double return");*/
fprintf(STDERR, "%s:%d PDQ_GetQueueLength - Bad double return\n", __FILE__, __LINE__);
return -1.0;
}
