// we would just use the UUID but this
// gets passed to srand which needs an int
$objKey = crc32($objId) >> 16 & 0x7fff;
$objs[$objId] = array('objKey' => $objKey);
}
// now we loop on each config
// and take stats on the distribution
// and data movement
$configs = makeConfigs(1, 39);
$totalConfs = count($configs);
$timings = array();
require_once 'PHPDFS/DataLocator/HonickyMillerR.php';
for ($n = 0; $n < $totalConfs; $n++) {
echo "processing conf {$n} with " . count($configs[$n]['clusters']) . " clusters.\n";
$totalTime = 0;
$hm = new PHPDFS_DataLocator_HonickyMillerR($configs[$n]);
foreach ($objs as $objId => $obj) {
$objKey = $obj['objKey'];
$time = microtime(1);
$hm->findNode($objKey);
$time2 = microtime(1);
$totalTime += $time2 - $time;
}
$timings[$n] = $totalTime / $totalObjs;
echo "avgtime:" . $timings[$n] . "\n";
}
print_r($timings);
function makeConfigs($numConfigs = 1, $subClusters = 1)
{
$configs = array();
$replicationDegree = 3;
require_once 'PHPDFS/DataLocator/HonickyMillerR.php';
foreach ($bucketConfs as $currConfig => &$confStats) {
$hm = new PHPDFS_DataLocator_HonickyMillerR($configs['data'][$currConfig]);
echo $hm->getTotalNodes() . "\n" . $failedDiskArg . "\n";
$failedDisk = $failedDiskArg;
if ($failedDiskArg > $hm->getTotalNodes()) {
$failedDisk = $hm->getTotalNodes();
} else {
if ($failedDiskArg < 0) {
$failedDisk = 0;
}
}
$confStats['stats']['failedDisk'] = $failedDisk;
if ($currConfig > 0) {
// make the locator for the previous config
$hmPrev = new PHPDFS_DataLocator_HonickyMillerR($configs['data'][$currConfig - 1]);
}
foreach ($objs as $objId => $obj) {
$objKey = $obj['objKey'];
$disks = $hm->findNodes($objKey);
$replicaCt = count($disks);
for ($replica = 0; $replica < $replicaCt; $replica++) {
$disk = $disks[$replica];
if ($failedDisk == $disk) {
// track replica distribution
// for a failed disk
foreach ($disks as $diskNo) {
if ($diskNo != $disk) {
if (!isset($confStats['stats']['failed'][$diskNo])) {
$confStats['stats']['failed'][$diskNo] = 0;
}
