From 6d0fbeb0a7fde0cc8bae6c9944ea6b017d96968a Mon Sep 17 00:00:00 2001
From: Nathan Kinkade <nath@nkinka.de>
Date: Sun, 16 Mar 2008 20:42:30 +0000
Subject: Moved some external packages into lib to make system more self
 contained

---
 lib/adodb/perf/perf-postgres.inc.php | 124 +++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 lib/adodb/perf/perf-postgres.inc.php

(limited to 'lib/adodb/perf/perf-postgres.inc.php')

diff --git a/lib/adodb/perf/perf-postgres.inc.php b/lib/adodb/perf/perf-postgres.inc.php
new file mode 100644
index 0000000..da41ebe
--- /dev/null
+++ b/lib/adodb/perf/perf-postgres.inc.php
@@ -0,0 +1,124 @@
+<?php
+
+/* 
+V4.94 23 Jan 2007  (c) 2000-2007 John Lim (jlim#natsoft.com.my). All rights reserved.
+  Released under both BSD license and Lesser GPL library license. 
+  Whenever there is any discrepancy between the two licenses, 
+  the BSD license will take precedence. See License.txt. 
+  Set tabs to 4 for best viewing.
+  
+  Latest version is available at http://adodb.sourceforge.net
+  
+  Library for basic performance monitoring and tuning 
+  
+*/
+
+// security - hide paths
+if (!defined('ADODB_DIR')) die();
+
+/*
+	Notice that PostgreSQL has no sql query cache
+*/
+class perf_postgres extends adodb_perf{
+	
+	var $tablesSQL = 
+	"select a.relname as tablename,(a.relpages+CASE WHEN b.relpages is null THEN 0 ELSE b.relpages END+CASE WHEN c.relpages is null THEN 0 ELSE c.relpages END)*8 as size_in_K,a.relfilenode as \"OID\"  from pg_class a left join pg_class b
+		on b.relname = 'pg_toast_'||trim(a.relfilenode) 
+		left join pg_class c on c.relname = 'pg_toast_'||trim(a.relfilenode)||'_index'
+		where a.relname in (select tablename from pg_tables where tablename not like 'pg_%')";
+	
+	var $createTableSQL = "CREATE TABLE adodb_logsql (
+		  created timestamp NOT NULL,
+		  sql0 varchar(250) NOT NULL,
+		  sql1 text NOT NULL,
+		  params text NOT NULL,
+		  tracer text NOT NULL,
+		  timer decimal(16,6) NOT NULL
+		)";	
+	
+	var $settings = array(
+	'Ratios',
+		'statistics collector' => array('RATIO',
+			"select case when count(*)=3 then 'TRUE' else 'FALSE' end from pg_settings where (name='stats_block_level' or name='stats_row_level' or name='stats_start_collector') and setting='on' ",
+			'Value must be TRUE to enable hit ratio statistics (<i>stats_start_collector</i>,<i>stats_row_level</i> and <i>stats_block_level</i> must be set to true in postgresql.conf)'),
+		'data cache hit ratio' => array('RATIO',
+			"select case when blks_hit=0 then 0 else round( ((1-blks_read::float/blks_hit)*100)::numeric, 2) end from pg_stat_database where datname='\$DATABASE'",
+			'=WarnCacheRatio'),
+	'IO',
+		'data reads' => array('IO',
+		'select sum(heap_blks_read+toast_blks_read) from pg_statio_user_tables',
+		),
+		'data writes' => array('IO',
+		'select round((sum(n_tup_ins/4.0+n_tup_upd/8.0+n_tup_del/4.0)/16)::numeric,2) from pg_stat_user_tables',
+		'Count of inserts/updates/deletes * coef'),
+
+	'Data Cache',
+		'data cache buffers' => array('DATAC',
+			"select setting from pg_settings where name='shared_buffers'",
+			'Number of cache buffers. <a href=http://www.varlena.com/GeneralBits/Tidbits/perf.html#basic>Tuning</a>'),
+		'cache blocksize' => array('DATAC',
+			'select 8192',
+			'(estimate)' ),
+		'data cache size' => array( 'DATAC',
+		"select setting::integer*8192 from pg_settings where name='shared_buffers'",
+			'' ),
+		'operating system cache size' => array( 'DATA',
+		"select setting::integer*8192 from pg_settings where name='effective_cache_size'",
+			'(effective cache size)' ),
+	'Memory Usage',
+	# Postgres 7.5 changelog: Rename server parameters SortMem and VacuumMem to work_mem and maintenance_work_mem;
+		'sort/work buffer size' => array('CACHE',
+			"select setting::integer*1024 from pg_settings where name='sort_mem' or name = 'work_mem' order by name",
+			'Size of sort buffer (per query)' ),
+	'Connections',
+		'current connections' => array('SESS',
+			'select count(*) from pg_stat_activity',
+			''),
+		'max connections' => array('SESS',
+			"select setting from pg_settings where name='max_connections'",
+			''),
+	'Parameters',
+		'rollback buffers' => array('COST',
+			"select setting from pg_settings where name='wal_buffers'",
+			'WAL buffers'),
+		'random page cost' => array('COST',
+			"select setting from pg_settings where name='random_page_cost'",
+			'Cost of doing a seek (default=4). See <a href=http://www.varlena.com/GeneralBits/Tidbits/perf.html#less>random_page_cost</a>'),
+		false
+	);
+	
+	function perf_postgres(&$conn)
+	{
+		$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 distinct sql1 from adodb_logsql where sql1 like $sqlq");
+			if ($arr) {
+				foreach($arr as $row) {
+					$sql = reset($row);
+					if (crc32($sql) == $partial) break;
+				}
+			}
+		}
+		$sql = str_replace('?',"''",$sql);
+		$s = '<p><b>Explain</b>: '.htmlspecialchars($sql).'</p>';
+		$rs = $this->conn->Execute('EXPLAIN '.$sql);
+		$this->conn->LogSQL($save);
+		$s .= '<pre>';
+		if ($rs)
+			while (!$rs->EOF) {
+				$s .= reset($rs->fields)."\n";
+				$rs->MoveNext();
+			}
+		$s .= '</pre>';
+		$s .= $this->Tracer($sql,$partial);
+		return $s;
+	}
+}
+?>
\ No newline at end of file
-- 
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