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✏️ Editing: perf-mssqlnative.inc.php

<?php
/**
 * Library for basic performance monitoring and tuning
 *
 * This file is part of ADOdb, a Database Abstraction Layer library for PHP.
 *
 * @package ADOdb
 * @link https://adodb.org Project's web site and documentation
 * @link https://github.com/ADOdb/ADOdb Source code and issue tracker
 *
 * The ADOdb Library is dual-licensed, released under both the BSD 3-Clause
 * and the GNU Lesser General Public Licence (LGPL) v2.1 or, at your option,
 * any later version. This means you can use it in proprietary products.
 * See the LICENSE.md file distributed with this source code for details.
 * @license BSD-3-Clause
 * @license LGPL-2.1-or-later
 *
 * @copyright 2000-2013 John Lim
 * @copyright 2014 Damien Regad, Mark Newnham and the ADOdb community
 */

// security - hide paths
if (!defined('ADODB_DIR')) die();

/*
	MSSQL has moved most performance info to Performance Monitor
*/
class perf_mssqlnative extends adodb_perf{
	var $sql1 = 'cast(sql1 as text)';
	var $createTableSQL = "CREATE TABLE adodb_logsql (
		  created datetime NOT NULL,
		  sql0 varchar(250) NOT NULL,
		  sql1 varchar(4000) NOT NULL,
		  params varchar(3000) NOT NULL,
		  tracer varchar(500) NOT NULL,
		  timer decimal(16,6) NOT NULL
		)";

var $settings = array(
	'Ratios',
		'data cache hit ratio' => array('RATIO',
			"select round((a.cntr_value*100.0)/b.cntr_value,2) from master.dbo.sysperfinfo a, master.dbo.sysperfinfo b where a.counter_name = 'Buffer cache hit ratio' and b.counter_name='Buffer cache hit ratio base'",
			'=WarnCacheRatio'),
		'prepared sql hit ratio' => array('RATIO',
			array('dbcc cachestats','Prepared',1,100),
			''),
		'adhoc sql hit ratio' => array('RATIO',
			array('dbcc cachestats','Adhoc',1,100),
			''),
	'IO',
		'data reads' => array('IO',
		"select cntr_value from master.dbo.sysperfinfo where counter_name = 'Page reads/sec'"),
		'data writes' => array('IO',
		"select cntr_value from master.dbo.sysperfinfo where counter_name = 'Page writes/sec'"),

'Data Cache',
		'data cache size' => array('DATAC',
		"select cntr_value*8192 from master.dbo.sysperfinfo where counter_name = 'Total Pages' and object_name='SQLServer:Buffer Manager'",
			'' ),
		'data cache blocksize' => array('DATAC',
			"select 8192",'page size'),
	'Connections',
		'current connections' => array('SESS',
			'=sp_who',
			''),
		'max connections' => array('SESS',
			"SELECT @@MAX_CONNECTIONS",
			''),

false
	);

function __construct(&$conn)
	{
		if ($conn->dataProvider == 'odbc') {
			$this->sql1 = 'sql1';
			//$this->explain = false;
		}
		$this->conn =& $conn;
	}

function Explain($sql,$partial=false)
	{

$save = $this->conn->LogSQL(false);
		if ($partial) {
			$sqlq = $this->conn->qstr($sql.'%');
			$arr = $this->conn->GetArray("select distinct sql1 from adodb_logsql where sql1 like $sqlq");
			if ($arr) {
				foreach($arr as $row) {
					$sql = reset($row);
					if (crc32($sql) == $partial) break;
				}
			}
		}

$s = '<p><b>Explain</b>: '.htmlspecialchars($sql).'</p>';
		$this->conn->Execute("SET SHOWPLAN_ALL ON;");
		$sql = str_replace('?',"''",$sql);
		global $ADODB_FETCH_MODE;

$save = $ADODB_FETCH_MODE;
		$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
		$rs =& $this->conn->Execute($sql);
		//adodb_printr($rs);
		$ADODB_FETCH_MODE = $save;
		if ($rs) {
			$rs->MoveNext();
			$s .= '<table bgcolor=white border=0 cellpadding="1" callspacing=0><tr><td nowrap align=center> Rows<td nowrap align=center> IO<td nowrap align=center> CPU<td align=left> &nbsp; &nbsp; Plan</tr>';
			while (!$rs->EOF) {
				$s .= '<tr><td>'.round($rs->fields[8],1).'<td>'.round($rs->fields[9],3).'<td align=right>'.round($rs->fields[10],3).'<td nowrap><pre>'.htmlspecialchars($rs->fields[0])."</td></pre></tr>\n"; ## NOTE CORRUPT </td></pre> tag is intentional!!!!
				$rs->MoveNext();
			}
			$s .= '</table>';

$rs->NextRecordSet();
		}

$this->conn->Execute("SET SHOWPLAN_ALL OFF;");
		$this->conn->LogSQL($save);
		$s .= $this->Tracer($sql);
		return $s;
	}

function Tables($orderby='1')
	{
	global $ADODB_FETCH_MODE;

$save = $ADODB_FETCH_MODE;
		$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
		//$this->conn->debug=1;
		$s = '<table border=1 bgcolor=white><tr><td><b>tablename</b></td><td><b>size_in_k</b></td><td><b>index size</b></td><td><b>reserved size</b></td></tr>';
		$rs1 = $this->conn->Execute("select distinct name from sysobjects where xtype='U'");
		if ($rs1) {
			while (!$rs1->EOF) {
				$tab = $rs1->fields[0];
				$tabq = $this->conn->qstr($tab);
				$rs2 = $this->conn->Execute("sp_spaceused $tabq");
				if ($rs2) {
					$s .= '<tr><td>'.$tab.'</td><td align=right>'.$rs2->fields[3].'</td><td align=right>'.$rs2->fields[4].'</td><td align=right>'.$rs2->fields[2].'</td></tr>';
					$rs2->Close();
				}
				$rs1->MoveNext();
			}
			$rs1->Close();
		}
		$ADODB_FETCH_MODE = $save;
		return $s.'</table>';
	}

function sp_who()
	{
		$arr = $this->conn->GetArray('sp_who');
		return sizeof($arr);
	}

function HealthCheck($cli=false)
	{

$this->conn->Execute('dbcc traceon(3604)');
		$html =  adodb_perf::HealthCheck($cli);
		$this->conn->Execute('dbcc traceoff(3604)');
		return $html;
	}

}

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