+++ /dev/null
-<?php
-
-/*
-V5.02 24 Sept 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;
- }
-
- var $optimizeTableLow = 'VACUUM %s';
- var $optimizeTableHigh = 'VACUUM ANALYZE %s';
-
-/**
- * @see adodb_perf#optimizeTable
- */
-
- function optimizeTable($table, $mode = ADODB_OPT_LOW)
- {
- if(! is_string($table)) return false;
-
- $conn = $this->conn;
- if (! $conn) return false;
-
- $sql = '';
- switch($mode) {
- case ADODB_OPT_LOW : $sql = $this->optimizeTableLow; break;
- case ADODB_OPT_HIGH: $sql = $this->optimizeTableHigh; break;
- default :
- {
- ADOConnection::outp(sprintf("<p>%s: '%s' using of undefined mode '%s'</p>", __CLASS__, 'optimizeTable', $mode));
- return false;
- }
- }
- $sql = sprintf($sql, $table);
-
- return $conn->Execute($sql) !== false;
- }
-
- 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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