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authorAndreas Baumann <mail@andreasbaumann.cc>2020-02-01 09:05:48 +0100
committerAndreas Baumann <mail@andreasbaumann.cc>2020-02-01 09:05:48 +0100
commit6854cb3f4d8219cf1829e32122eb2502a916eae9 (patch)
tree350feb504587d932e02837a1442b059759927646 /vendor/adodb/adodb-php/perf/perf-postgres.inc.php
initial checkin
Diffstat (limited to 'vendor/adodb/adodb-php/perf/perf-postgres.inc.php')
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diff --git a/vendor/adodb/adodb-php/perf/perf-postgres.inc.php b/vendor/adodb/adodb-php/perf/perf-postgres.inc.php
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@@ -0,0 +1,154 @@
+<?php
+
+/*
+@version v5.20.14 06-Jan-2019
+@copyright (c) 2000-2013 John Lim (jlim#natsoft.com). All rights reserved.
+@copyright (c) 2014 Damien Regad, Mark Newnham and the ADOdb community
+ 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.org/
+
+ 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 __construct(&$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;
+ }
+}