increase load limit for multi-threaded update

[nominatim.git] / utils / update.php

diff --git a/utils/update.php b/utils/update.php
index f8bbfb15ee955ed9069d7fad8fdda835fbf1bbf1..ccf693000da1998c76a59287247e869f70ec3b5b 100755 (executable)
--- a/utils/update.php
+++ b/utils/update.php
@@ -26,10 +26,12 @@
 
                array('import-file', '', 0, 1, 1, 1, 'realpath', 'Re-import data from an OSM file'),
                array('import-diff', '', 0, 1, 1, 1, 'realpath', 'Import a diff (osc) file from local file system'),
 
                array('import-file', '', 0, 1, 1, 1, 'realpath', 'Re-import data from an OSM file'),
                array('import-diff', '', 0, 1, 1, 1, 'realpath', 'Import a diff (osc) file from local file system'),

+               array('osm2pgsql-cache', '', 0, 1, 1, 1, 'int', 'Cache size used by osm2pgsql'),

 
                array('import-node', '', 0, 1, 1, 1, 'int', 'Re-import node'),
                array('import-way', '', 0, 1, 1, 1, 'int', 'Re-import way'),
                array('import-relation', '', 0, 1, 1, 1, 'int', 'Re-import relation'),
 
                array('import-node', '', 0, 1, 1, 1, 'int', 'Re-import node'),
                array('import-way', '', 0, 1, 1, 1, 'int', 'Re-import way'),
                array('import-relation', '', 0, 1, 1, 1, 'int', 'Re-import relation'),

+               array('import-from-main-api', '', 0, 1, 0, 0, 'bool', 'Use OSM API instead of Overpass to download objects'),

 
                array('index', '', 0, 1, 0, 0, 'bool', 'Index'),
                array('index-rank', '', 0, 1, 1, 1, 'int', 'Rank to start indexing from'),
 
                array('index', '', 0, 1, 0, 0, 'bool', 'Index'),
                array('index-rank', '', 0, 1, 1, 1, 'int', 'Rank to start indexing from'),


@@ -45,7 +47,8 @@
                showUsage($aCMDOptions, true, 'Select either import of hourly or daily');
        }
 
                showUsage($aCMDOptions, true, 'Select either import of hourly or daily');
        }
 

-       if (!isset($aResult['index-instances'])) $aResult['index-instances'] = 1;
+       if (!isset($aResult['index-rank'])) $aResult['index-rank'] = 0;
+

 /*
        // Lock to prevent multiple copies running
        if (exec('/bin/ps uww | grep '.basename(__FILE__).' | grep -v /dev/null | grep -v grep -c', $aOutput2, $iResult) > 1)
 /*
        // Lock to prevent multiple copies running
        if (exec('/bin/ps uww | grep '.basename(__FILE__).' | grep -v /dev/null | grep -v grep -c', $aOutput2, $iResult) > 1)


@@ -65,8 +68,27 @@
        // Assume osm2pgsql is in the folder above
        $sBasePath = dirname(dirname(__FILE__));
 
        // Assume osm2pgsql is in the folder above
        $sBasePath = dirname(dirname(__FILE__));
 

+       date_default_timezone_set('Etc/UTC');
+

        $oDB =& getDB();
 
        $oDB =& getDB();
 

+       $aDSNInfo = DB::parseDSN(CONST_Database_DSN);
+       if (!isset($aDSNInfo['port']) || !$aDSNInfo['port']) $aDSNInfo['port'] = 5432;
+
+       // cache memory to be used by osm2pgsql, should not be more than the available memory
+       $iCacheMemory = (isset($aResult['osm2pgsql-cache'])?$aResult['osm2pgsql-cache']:2000);
+       if ($iCacheMemory + 500 > getTotalMemoryMB())
+       {
+               $iCacheMemory = getCacheMemoryMB();
+               echo "WARNING: resetting cache memory to $iCacheMemory\n";
+       }
+       $sOsm2pgsqlCmd = CONST_Osm2pgsql_Binary.' -klas -C '.$iCacheMemory.' -O gazetteer -d '.$aDSNInfo['database'].' -P '.$aDSNInfo['port'];
+       if (!is_null(CONST_Osm2pgsql_Flatnode_File))
+       {
+               $sOsm2pgsqlCmd .= ' --flat-nodes '.CONST_Osm2pgsql_Flatnode_File;
+       }
+
+

        $bFirst = true;
        $bContinue = $aResult['import-all'];
        while ($bContinue || $bFirst)
        $bFirst = true;
        $bContinue = $aResult['import-all'];
        while ($bContinue || $bFirst)


@@ -95,9 +117,9 @@
                {
                        // import diff directly (e.g. from osmosis --rri)
                        $sNextFile = $aResult['import-diff'];
                {
                        // import diff directly (e.g. from osmosis --rri)
                        $sNextFile = $aResult['import-diff'];

-                       if (!file_exists($nextFile))
+                       if (!file_exists($sNextFile))

                        {
                        {

-                               echo "Cannot open $nextFile\n";
+                               echo "Cannot open $sNextFile\n";

                                exit;
                        }
                        // Don't update the import status - we don't know what this file contains
                                exit;
                        }
                        // Don't update the import status - we don't know what this file contains


@@ -105,10 +127,10 @@
                }
 
                // Missing file is not an error - it might not be created yet
                }
 
                // Missing file is not an error - it might not be created yet

-               if (($aResult['import-hourly'] || $aResult['import-daily']) && file_exists($sNextFile))
+               if (($aResult['import-hourly'] || $aResult['import-daily'] || isset($aResult['import-diff'])) && file_exists($sNextFile))

                {
                        // Import the file
                {
                        // Import the file

-                       $sCMD = CONST_Osm2pgsql_Binary.' -klas -C 2000 -O gazetteer -d '.$sDatabaseName.' '.$sNextFile;
+                       $sCMD = $sOsm2pgsqlCmd.' '.$sNextFile;

                        echo $sCMD."\n";
                        exec($sCMD, $sJunk, $iErrorLevel);
 
                        echo $sCMD."\n";
                        exec($sCMD, $sJunk, $iErrorLevel);
 


@@ -127,63 +149,104 @@
                }
        }
 
                }
        }
 

-       $sModifyXML = false;
+       $bModifyXML = false;
+       $sModifyXMLstr = '';
+       $bUseOSMApi = isset($aResult['import-from-main-api']) && $aResult['import-from-main-api'];

        if (isset($aResult['import-file']) && $aResult['import-file'])
        {
        if (isset($aResult['import-file']) && $aResult['import-file'])
        {

-               $sModifyXML = file_get_contents($aResult['import-file']);
+               $bModifyXML = true;

        }
        if (isset($aResult['import-node']) && $aResult['import-node'])
        {
        }
        if (isset($aResult['import-node']) && $aResult['import-node'])
        {

-               $sModifyXML = file_get_contents('http://www.openstreetmap.org/api/0.6/node/'.$aResult['import-node']);
+               $bModifyXML = true;
+               if ($bUseOSMApi)
+               {
+                       $sModifyXMLstr = file_get_contents('http://www.openstreetmap.org/api/0.6/node/'.$aResult['import-node']);
+               }
+               else
+               {
+                       $sModifyXMLstr = file_get_contents('http://overpass-api.de/api/interpreter?data=node('.$aResult['import-node'].');out%20meta;');
+               }

        }
        if (isset($aResult['import-way']) && $aResult['import-way'])
        {
        }
        if (isset($aResult['import-way']) && $aResult['import-way'])
        {

-               $sModifyXML = file_get_contents('http://www.openstreetmap.org/api/0.6/way/'.$aResult['import-way'].'/full');
+               $bModifyXML = true;
+               if ($bUseOSMApi)
+               {
+                       $sCmd = 'http://www.openstreetmap.org/api/0.6/way/'.$aResult['import-way'].'/full';
+               }
+               else
+               {
+                       $sCmd = 'http://overpass-api.de/api/interpreter?data=(way('.$aResult['import-way'].');node(w););out%20meta;';
+               }
+               $sModifyXMLstr = file_get_contents($sCmd);

        }
        if (isset($aResult['import-relation']) && $aResult['import-relation'])
        {
        }
        if (isset($aResult['import-relation']) && $aResult['import-relation'])
        {

-               $sModifyXML = file_get_contents('http://www.openstreetmap.org/api/0.6/relation/'.$aResult['import-relation'].'/full');
+               $bModifyXML = true;
+               if ($bUseOSMApi)
+               {
+                       $sModifyXMLstr = file_get_contents('http://www.openstreetmap.org/api/0.6/relation/'.$aResult['import-relation'].'/full');
+               }
+               else
+               {
+                       $sModifyXMLstr = file_get_contents('http://overpass-api.de/api/interpreter?data=((rel('.$aResult['import-relation'].');way(r);node(w));node(r));out%20meta;');
+               }

        }
        }

-       if ($sModifyXML)
+       if ($bModifyXML)

        {
        {

-               // Hack into a modify request
-               $sModifyXML = str_replace('<osm version="0.6" generator="OpenStreetMap server">',
-                       '<osmChange version="0.6" generator="OpenStreetMap server"><modify>', $sModifyXML);
-               $sModifyXML = str_replace('<osm version=\'0.6\' upload=\'true\' generator=\'JOSM\'>',
-                       '<osmChange version="0.6" generator="OpenStreetMap server"><modify>', $sModifyXML);
-               $sModifyXML = str_replace('</osm>', '</modify></osmChange>', $sModifyXML);
-
-               // Outputing this is too verbose
-               if ($aResult['verbose'] && false) var_dump($sModifyXML);
-
-               $sDatabaseName = 'nominatim';
-               $aSpec = array(
-                       0 => array("pipe", "r"),  // stdin
-                       1 => array("pipe", "w"),  // stdout
-                       2 => array("pipe", "w") // stderr
-               );
-               $aPipes = array();
-               $sCMD = CONST_Osm2pgsql_Binary.' -klas -C 2000 -O gazetteer -d '.$sDatabaseName.' -';
-               echo $sCMD."\n";
-               $hProc = proc_open($sCMD, $aSpec, $aPipes);
-               if (!is_resource($hProc))
+               // derive change from normal osm file with osmosis
+               $sTemporaryFile = CONST_BasePath.'/data/osmosischange.osc';
+               if (isset($aResult['import-file']) && $aResult['import-file'])

                {
                {

-                       echo "$sBasePath/osm2pgsql failed\n";
-                       exit;   
+                       $sCMD = CONST_Osmosis_Binary.' --read-xml \''.$aResult['import-file'].'\' --read-empty --derive-change --write-xml-change '.$sTemporaryFile;
+                       echo $sCMD."\n";
+                       exec($sCMD, $sJunk, $iErrorLevel);
+                       if ($iErrorLevel)
+                       {
+                               echo "Error converting osm to osc, osmosis returned: $iErrorLevel\n";
+                               exit;
+                       }

                }
                }

-               fwrite($aPipes[0], $sModifyXML);
-               fclose($aPipes[0]);
-               $sOut = stream_get_contents($aPipes[1]);
-               if ($aResult['verbose']) echo $sOut;
-               fclose($aPipes[1]);
-               $sErrors = stream_get_contents($aPipes[2]);
-               if ($aResult['verbose']) echo $sErrors;
-               fclose($aPipes[2]);
-               if ($iError = proc_close($hProc))
+               else

                {
                {

-                       echo "osm2pgsql existed with error level $iError\n";
-                       echo $sOut;
-                       echo $sErrors;
+                       $aSpec = array(
+                               0 => array("pipe", "r"),  // stdin
+                               1 => array("pipe", "w"),  // stdout
+                               2 => array("pipe", "w") // stderr
+                       );
+                       $sCMD = CONST_Osmosis_Binary.' --read-xml - --read-empty --derive-change --write-xml-change '.$sTemporaryFile;
+                       echo $sCMD."\n";
+                       $hProc = proc_open($sCMD, $aSpec, $aPipes);
+                       if (!is_resource($hProc))
+                       {
+                               echo "Error converting osm to osc, osmosis failed\n";
+                               exit;
+                       }
+                       fwrite($aPipes[0], $sModifyXMLstr);
+                       fclose($aPipes[0]);
+                       $sOut = stream_get_contents($aPipes[1]);
+                       if ($aResult['verbose']) echo $sOut;
+                       fclose($aPipes[1]);
+                       $sErrors = stream_get_contents($aPipes[2]);
+                       if ($aResult['verbose']) echo $sErrors;
+                       fclose($aPipes[2]);
+                       if ($iError = proc_close($hProc))
+                       {
+                               echo "Error converting osm to osc, osmosis returned: $iError\n";
+                               echo $sOut;
+                               echo $sErrors;
+                               exit;
+                       }
+               }
+
+               // import generated change file
+               $sCMD = $sOsm2pgsqlCmd.' '.$sTemporaryFile;
+               echo $sCMD."\n";
+               exec($sCMD, $sJunk, $iErrorLevel);
+               if ($iErrorLevel)
+               {
+                       echo "osm2pgsql exited with error level $iErrorLevel\n";

                        exit;
                }
        }
                        exit;
                }
        }


@@ -297,18 +360,25 @@
 
        if ($aResult['index'])
        {
 
        if ($aResult['index'])
        {

-               index($aResult, $sDatabaseDSN);
+               if (!isset($aResult['index-instances'])) $aResult['index-instances'] = 1;
+               passthru(CONST_BasePath.'/nominatim/nominatim -i -d '.$aDSNInfo['database'].' -P '.$aDSNInfo['port'].' -t '.$aResult['index-instances'].' -r '.$aResult['index-rank']);

        }
 
        if ($aResult['import-osmosis'] || $aResult['import-osmosis-all'])
        {
        }
 
        if ($aResult['import-osmosis'] || $aResult['import-osmosis-all'])
        {

+
+               if (strpos(CONST_Replication_Url, 'download.geofabrik.de') !== false && CONST_Replication_Update_Interval < 86400) {
+                       echo "Error: Update interval too low for download.geofabrik.de.  Please check install documentation (http://wiki.openstreetmap.org/wiki/Nominatim/Installation#Updates)\n";
+                       exit;
+               }
+

                $sImportFile = CONST_BasePath.'/data/osmosischange.osc';
                $sOsmosisCMD = CONST_Osmosis_Binary;
                $sOsmosisConfigDirectory = CONST_BasePath.'/settings';
                $sImportFile = CONST_BasePath.'/data/osmosischange.osc';
                $sOsmosisCMD = CONST_Osmosis_Binary;
                $sOsmosisConfigDirectory = CONST_BasePath.'/settings';

-               $sDatabaseName = 'nominatim';

                $sCMDDownload = $sOsmosisCMD.' --read-replication-interval workingDirectory='.$sOsmosisConfigDirectory.' --simplify-change --write-xml-change '.$sImportFile;
                $sCMDDownload = $sOsmosisCMD.' --read-replication-interval workingDirectory='.$sOsmosisConfigDirectory.' --simplify-change --write-xml-change '.$sImportFile;

-               $sCMDImport = CONST_Osm2pgsql_Binary.' -klas -C 2000 -O gazetteer -d '.$sDatabaseName.' '.$sImportFile;
-               $sCMDIndex = $sBasePath.'/nominatim/nominatim -i -t '.$aResult['index-instances'];
+               $sCMDCheckReplicationLag = $sOsmosisCMD.' -q --read-replication-lag workingDirectory='.$sOsmosisConfigDirectory;
+               $sCMDImport = $sOsm2pgsqlCmd.' '.$sImportFile;
+               $sCMDIndex = $sBasePath.'/nominatim/nominatim -i -d '.$aDSNInfo['database'].' -P '.$aDSNInfo['port'];

                if (!$aResult['no-npi']) {
                        $sCMDIndex .= '-F ';
                }
                if (!$aResult['no-npi']) {
                        $sCMDIndex .= '-F ';
                }


@@ -326,11 +396,35 @@
 //                     {
                                if (!file_exists($sImportFile))
                                {
 //                     {
                                if (!file_exists($sImportFile))
                                {

-                                       // Use osmosis to download the file
+                                       // First check if there are new updates published (except for minutelies - there's always new diffs to process)
+                                       if ( CONST_Replication_Update_Interval > 60 )
+                                       {
+
+                                               unset($aReplicationLag);
+                                               exec($sCMDCheckReplicationLag, $aReplicationLag, $iErrorLevel); 
+                                               while ($iErrorLevel > 0 || $aReplicationLag[0] < 1)
+                                               {
+                                                       if ($iErrorLevel)
+                                                       {
+                                                               echo "Error: $iErrorLevel. ";
+                                                               echo "Re-trying: ".$sCMDCheckReplicationLag." in ".CONST_Replication_Recheck_Interval." secs\n";
+                                                       }
+                                                       else
+                                                       {
+                                                               echo ".";
+                                                       }
+                                                       sleep(CONST_Replication_Recheck_Interval);
+                                                       unset($aReplicationLag);
+                                                       exec($sCMDCheckReplicationLag, $aReplicationLag, $iErrorLevel); 
+                                               }
+                                               // There are new replication files - use osmosis to download the file
+                                               echo "\n".date('Y-m-d H:i:s')." Replication Delay is ".$aReplicationLag[0]."\n";
+                                       }
+                                       $fStartTime = time();

                                        $fCMDStartTime = time();
                                        echo $sCMDDownload."\n";
                                        exec($sCMDDownload, $sJunk, $iErrorLevel);
                                        $fCMDStartTime = time();
                                        echo $sCMDDownload."\n";
                                        exec($sCMDDownload, $sJunk, $iErrorLevel);

-                                       while ($iErrorLevel == 1)
+                                       while ($iErrorLevel > 0)

                                        {
                                                echo "Error: $iErrorLevel\n";
                                                sleep(60);
                                        {
                                                echo "Error: $iErrorLevel\n";
                                                sleep(60);


@@ -339,9 +433,10 @@
                                        }
                                        $iFileSize = filesize($sImportFile);
                                        $sBatchEnd = getosmosistimestamp($sOsmosisConfigDirectory);
                                        }
                                        $iFileSize = filesize($sImportFile);
                                        $sBatchEnd = getosmosistimestamp($sOsmosisConfigDirectory);

-                                       echo "Completed for $sBatchEnd in ".round((time()-$fCMDStartTime)/60,2)." minutes\n";

                                        $sSQL = "INSERT INTO import_osmosis_log values ('$sBatchEnd',$iFileSize,'".date('Y-m-d H:i:s',$fCMDStartTime)."','".date('Y-m-d H:i:s')."','osmosis')";
                                        $sSQL = "INSERT INTO import_osmosis_log values ('$sBatchEnd',$iFileSize,'".date('Y-m-d H:i:s',$fCMDStartTime)."','".date('Y-m-d H:i:s')."','osmosis')";

+                                       var_Dump($sSQL);

                                        $oDB->query($sSQL);
                                        $oDB->query($sSQL);

+                                       echo date('Y-m-d H:i:s')." Completed osmosis step for $sBatchEnd in ".round((time()-$fCMDStartTime)/60,2)." minutes\n";

                                }
 
                                $iFileSize = filesize($sImportFile);
                                }
 
                                $iFileSize = filesize($sImportFile);


@@ -354,12 +449,12 @@
                                if ($iErrorLevel)
                                {
                                        echo "Error: $iErrorLevel\n";
                                if ($iErrorLevel)
                                {
                                        echo "Error: $iErrorLevel\n";

-                                       exit;
+                                       exit($iErrorLevel);

                                }
                                }

-                               echo "Completed for $sBatchEnd in ".round((time()-$fCMDStartTime)/60,2)." minutes\n";

                                $sSQL = "INSERT INTO import_osmosis_log values ('$sBatchEnd',$iFileSize,'".date('Y-m-d H:i:s',$fCMDStartTime)."','".date('Y-m-d H:i:s')."','osm2pgsql')";
                                var_Dump($sSQL);
                                $oDB->query($sSQL);
                                $sSQL = "INSERT INTO import_osmosis_log values ('$sBatchEnd',$iFileSize,'".date('Y-m-d H:i:s',$fCMDStartTime)."','".date('Y-m-d H:i:s')."','osm2pgsql')";
                                var_Dump($sSQL);
                                $oDB->query($sSQL);

+                               echo date('Y-m-d H:i:s')." Completed osm2pgsql step for $sBatchEnd in ".round((time()-$fCMDStartTime)/60,2)." minutes\n";

 
                                // Archive for debug?
                                unlink($sImportFile);
 
                                // Archive for debug?
                                unlink($sImportFile);


@@ -368,16 +463,25 @@
                        $sBatchEnd = getosmosistimestamp($sOsmosisConfigDirectory);
 
                        // Index file
                        $sBatchEnd = getosmosistimestamp($sOsmosisConfigDirectory);
 
                        // Index file

-                       $sThisIndexCmd = $sCMDIndex;
+                       if (!isset($aResult['index-instances']))
+                       {
+                               if (getLoadAverage() < 24)
+                                       $iIndexInstances = 2;
+                               else
+                                       $iIndexInstances = 1;
+                       } else
+                               $iIndexInstances = $aResult['index-instances'];
+
+                       $sThisIndexCmd = $sCMDIndex.' -t '.$iIndexInstances;
+                       $fCMDStartTime = time();

 
                        if (!$aResult['no-npi'])
                        {
 
                        if (!$aResult['no-npi'])
                        {

-                               $fCMDStartTime = time();

                                $iFileID = $oDB->getOne('select nextval(\'file\')');
                                if (PEAR::isError($iFileID))
                                {
                                        echo $iFileID->getMessage()."\n";
                                $iFileID = $oDB->getOne('select nextval(\'file\')');
                                if (PEAR::isError($iFileID))
                                {
                                        echo $iFileID->getMessage()."\n";

-                                       exit;
+                                       exit(-1);

                                } 
                                $sFileDir = CONST_BasePath.'/export/diff/';
                                $sFileDir .= str_pad(floor($iFileID/1000000), 3, '0', STR_PAD_LEFT);
                                } 
                                $sFileDir = CONST_BasePath.'/export/diff/';
                                $sFileDir .= str_pad(floor($iFileID/1000000), 3, '0', STR_PAD_LEFT);


@@ -403,7 +507,7 @@
                                if ($iErrorLevel)
                                {
                                        echo "Error: $iErrorLevel\n";
                                if ($iErrorLevel)
                                {
                                        echo "Error: $iErrorLevel\n";

-                                       exit;
+                                       exit($iErrorLevel);

                                }
 
                                if (!$aResult['no-npi'])
                                }
 
                                if (!$aResult['no-npi'])


@@ -418,7 +522,7 @@
                                        if ($iErrorLevel)
                                        {
                                                echo "Error: $iErrorLevel\n";
                                        if ($iErrorLevel)
                                        {
                                                echo "Error: $iErrorLevel\n";

-                                               exit;
+                                               exit($iErrorLevel);

                                        }
 
                                        rename($sFileDir.'/'.str_pad($iFileID % 1000, 3, '0', STR_PAD_LEFT).".npi.out.bz2",
                                        }
 
                                        rename($sFileDir.'/'.str_pad($iFileID % 1000, 3, '0', STR_PAD_LEFT).".npi.out.bz2",


@@ -426,19 +530,28 @@
                                }
                        }
 
                                }
                        }
 

-                       echo "Completed for $sBatchEnd in ".round((time()-$fCMDStartTime)/60,2)." minutes\n";

                        $sSQL = "INSERT INTO import_osmosis_log values ('$sBatchEnd',$iFileSize,'".date('Y-m-d H:i:s',$fCMDStartTime)."','".date('Y-m-d H:i:s')."','index')";
                        $sSQL = "INSERT INTO import_osmosis_log values ('$sBatchEnd',$iFileSize,'".date('Y-m-d H:i:s',$fCMDStartTime)."','".date('Y-m-d H:i:s')."','index')";

+                       var_Dump($sSQL);

                        $oDB->query($sSQL);
                        $oDB->query($sSQL);

+                       echo date('Y-m-d H:i:s')." Completed index step for $sBatchEnd in ".round((time()-$fCMDStartTime)/60,2)." minutes\n";

 
                        $sSQL = "update import_status set lastimportdate = '$sBatchEnd'";
                        $oDB->query($sSQL);
 
                        $fDuration = time() - $fStartTime;
 
                        $sSQL = "update import_status set lastimportdate = '$sBatchEnd'";
                        $oDB->query($sSQL);
 
                        $fDuration = time() - $fStartTime;

-                       echo "Completed for $sBatchEnd in ".round($fDuration/60,2)."\n";
+                       echo date('Y-m-d H:i:s')." Completed all for $sBatchEnd in ".round($fDuration/60,2)." minutes\n";

                        if (!$aResult['import-osmosis-all']) exit;
 
                        if (!$aResult['import-osmosis-all']) exit;
 

-                       echo "Sleeping ".max(0,60-$fDuration)." seconds\n";
-                       sleep(max(0,60-$fDuration));
+                       if ( CONST_Replication_Update_Interval > 60 )
+                       {
+                               $iSleep = max(0,(strtotime($sBatchEnd)+CONST_Replication_Update_Interval-time()));
+                       }
+                       else
+                       {
+                               $iSleep = max(0,CONST_Replication_Update_Interval-$fDuration);
+                       }
+                       echo date('Y-m-d H:i:s')." Sleeping $iSleep seconds\n";
+                       sleep($iSleep);

                }
 
        }
                }
 
        }