1 | <?php |
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2 | /* |
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3 | V4.94 23 Jan 2007 (c) 2000-2007 John Lim (jlim#natsoft.com.my). All rights reserved. |
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4 | Released under both BSD license and Lesser GPL library license. |
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5 | Whenever there is any discrepancy between the two licenses, |
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6 | the BSD license will take precedence. See License.txt. |
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7 | Set tabs to 4 for best viewing. |
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8 | |
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9 | Latest version is available at http://adodb.sourceforge.net |
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10 | |
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11 | Library for basic performance monitoring and tuning |
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12 | |
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13 | */ |
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14 | |
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15 | // security - hide paths |
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16 | if (!defined('ADODB_DIR')) die(); |
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17 | |
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18 | class perf_mysql extends adodb_perf{ |
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19 | |
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20 | var $tablesSQL = 'show table status'; |
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21 | |
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22 | var $createTableSQL = "CREATE TABLE adodb_logsql ( |
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23 | created datetime NOT NULL, |
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24 | sql0 varchar(250) NOT NULL, |
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25 | sql1 text NOT NULL, |
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26 | params text NOT NULL, |
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27 | tracer text NOT NULL, |
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28 | timer decimal(16,6) NOT NULL |
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29 | )"; |
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30 | |
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31 | var $settings = array( |
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32 | 'Ratios', |
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33 | 'MyISAM cache hit ratio' => array('RATIO', |
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34 | '=GetKeyHitRatio', |
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35 | '=WarnCacheRatio'), |
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36 | 'InnoDB cache hit ratio' => array('RATIO', |
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37 | '=GetInnoDBHitRatio', |
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38 | '=WarnCacheRatio'), |
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39 | 'data cache hit ratio' => array('HIDE', # only if called |
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40 | '=FindDBHitRatio', |
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41 | '=WarnCacheRatio'), |
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42 | 'sql cache hit ratio' => array('RATIO', |
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43 | '=GetQHitRatio', |
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44 | ''), |
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45 | 'IO', |
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46 | 'data reads' => array('IO', |
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47 | '=GetReads', |
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48 | 'Number of selects (Key_reads is not accurate)'), |
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49 | 'data writes' => array('IO', |
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50 | '=GetWrites', |
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51 | 'Number of inserts/updates/deletes * coef (Key_writes is not accurate)'), |
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52 | |
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53 | 'Data Cache', |
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54 | 'MyISAM data cache size' => array('DATAC', |
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55 | array("show variables", 'key_buffer_size'), |
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56 | '' ), |
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57 | 'BDB data cache size' => array('DATAC', |
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58 | array("show variables", 'bdb_cache_size'), |
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59 | '' ), |
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60 | 'InnoDB data cache size' => array('DATAC', |
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61 | array("show variables", 'innodb_buffer_pool_size'), |
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62 | '' ), |
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63 | 'Memory Usage', |
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64 | 'read buffer size' => array('CACHE', |
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65 | array("show variables", 'read_buffer_size'), |
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66 | '(per session)'), |
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67 | 'sort buffer size' => array('CACHE', |
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68 | array("show variables", 'sort_buffer_size'), |
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69 | 'Size of sort buffer (per session)' ), |
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70 | 'table cache' => array('CACHE', |
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71 | array("show variables", 'table_cache'), |
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72 | 'Number of tables to keep open'), |
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73 | 'Connections', |
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74 | 'current connections' => array('SESS', |
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75 | array('show status','Threads_connected'), |
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76 | ''), |
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77 | 'max connections' => array( 'SESS', |
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78 | array("show variables",'max_connections'), |
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79 | ''), |
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80 | |
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81 | false |
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82 | ); |
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83 | |
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84 | function perf_mysql(&$conn) |
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85 | { |
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86 | $this->conn =& $conn; |
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87 | } |
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88 | |
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89 | function Explain($sql,$partial=false) |
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90 | { |
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91 | |
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92 | if (strtoupper(substr(trim($sql),0,6)) !== 'SELECT') return '<p>Unable to EXPLAIN non-select statement</p>'; |
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93 | $save = $this->conn->LogSQL(false); |
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94 | if ($partial) { |
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95 | $sqlq = $this->conn->qstr($sql.'%'); |
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96 | $arr = $this->conn->GetArray("select distinct sql1 from adodb_logsql where sql1 like $sqlq"); |
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97 | if ($arr) { |
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98 | foreach($arr as $row) { |
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99 | $sql = reset($row); |
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100 | if (crc32($sql) == $partial) break; |
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101 | } |
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102 | } |
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103 | } |
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104 | $sql = str_replace('?',"''",$sql); |
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105 | |
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106 | if ($partial) { |
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107 | $sqlq = $this->conn->qstr($sql.'%'); |
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108 | $sql = $this->conn->GetOne("select sql1 from adodb_logsql where sql1 like $sqlq"); |
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109 | } |
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110 | |
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111 | $s = '<p><b>Explain</b>: '.htmlspecialchars($sql).'</p>'; |
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112 | $rs = $this->conn->Execute('EXPLAIN '.$sql); |
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113 | $s .= rs2html($rs,false,false,false,false); |
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114 | $this->conn->LogSQL($save); |
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115 | $s .= $this->Tracer($sql); |
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116 | return $s; |
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117 | } |
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118 | |
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119 | function Tables() |
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120 | { |
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121 | if (!$this->tablesSQL) return false; |
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122 | |
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123 | $rs = $this->conn->Execute($this->tablesSQL); |
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124 | if (!$rs) return false; |
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125 | |
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126 | $html = rs2html($rs,false,false,false,false); |
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127 | return $html; |
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128 | } |
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129 | |
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130 | function GetReads() |
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131 | { |
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132 | global $ADODB_FETCH_MODE; |
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133 | $save = $ADODB_FETCH_MODE; |
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134 | $ADODB_FETCH_MODE = ADODB_FETCH_NUM; |
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135 | if ($this->conn->fetchMode !== false) $savem = $this->conn->SetFetchMode(false); |
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136 | |
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137 | $rs = $this->conn->Execute('show status'); |
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138 | |
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139 | if (isset($savem)) $this->conn->SetFetchMode($savem); |
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140 | $ADODB_FETCH_MODE = $save; |
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141 | |
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142 | if (!$rs) return 0; |
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143 | $val = 0; |
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144 | while (!$rs->EOF) { |
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145 | switch($rs->fields[0]) { |
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146 | case 'Com_select': |
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147 | $val = $rs->fields[1]; |
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148 | $rs->Close(); |
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149 | return $val; |
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150 | } |
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151 | $rs->MoveNext(); |
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152 | } |
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153 | |
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154 | $rs->Close(); |
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155 | |
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156 | return $val; |
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157 | } |
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158 | |
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159 | function GetWrites() |
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160 | { |
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161 | global $ADODB_FETCH_MODE; |
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162 | $save = $ADODB_FETCH_MODE; |
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163 | $ADODB_FETCH_MODE = ADODB_FETCH_NUM; |
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164 | if ($this->conn->fetchMode !== false) $savem = $this->conn->SetFetchMode(false); |
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165 | |
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166 | $rs = $this->conn->Execute('show status'); |
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167 | |
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168 | if (isset($savem)) $this->conn->SetFetchMode($savem); |
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169 | $ADODB_FETCH_MODE = $save; |
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170 | |
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171 | if (!$rs) return 0; |
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172 | $val = 0.0; |
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173 | while (!$rs->EOF) { |
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174 | switch($rs->fields[0]) { |
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175 | case 'Com_insert': |
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176 | $val += $rs->fields[1]; break; |
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177 | case 'Com_delete': |
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178 | $val += $rs->fields[1]; break; |
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179 | case 'Com_update': |
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180 | $val += $rs->fields[1]/2; |
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181 | $rs->Close(); |
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182 | return $val; |
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183 | } |
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184 | $rs->MoveNext(); |
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185 | } |
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186 | |
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187 | $rs->Close(); |
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188 | |
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189 | return $val; |
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190 | } |
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191 | |
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192 | function FindDBHitRatio() |
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193 | { |
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194 | // first find out type of table |
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195 | //$this->conn->debug=1; |
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196 | |
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197 | global $ADODB_FETCH_MODE; |
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198 | $save = $ADODB_FETCH_MODE; |
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199 | $ADODB_FETCH_MODE = ADODB_FETCH_NUM; |
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200 | if ($this->conn->fetchMode !== false) $savem = $this->conn->SetFetchMode(false); |
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201 | |
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202 | $rs = $this->conn->Execute('show table status'); |
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203 | |
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204 | if (isset($savem)) $this->conn->SetFetchMode($savem); |
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205 | $ADODB_FETCH_MODE = $save; |
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206 | |
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207 | if (!$rs) return ''; |
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208 | $type = strtoupper($rs->fields[1]); |
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209 | $rs->Close(); |
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210 | switch($type){ |
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211 | case 'MYISAM': |
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212 | case 'ISAM': |
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213 | return $this->DBParameter('MyISAM cache hit ratio').' (MyISAM)'; |
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214 | case 'INNODB': |
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215 | return $this->DBParameter('InnoDB cache hit ratio').' (InnoDB)'; |
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216 | default: |
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217 | return $type.' not supported'; |
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218 | } |
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219 | |
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220 | } |
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221 | |
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222 | function GetQHitRatio() |
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223 | { |
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224 | //Total number of queries = Qcache_inserts + Qcache_hits + Qcache_not_cached |
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225 | $hits = $this->_DBParameter(array("show status","Qcache_hits")); |
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226 | $total = $this->_DBParameter(array("show status","Qcache_inserts")); |
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227 | $total += $this->_DBParameter(array("show status","Qcache_not_cached")); |
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228 | |
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229 | $total += $hits; |
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230 | if ($total) return round(($hits*100)/$total,2); |
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231 | return 0; |
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232 | } |
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233 | |
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234 | /* |
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235 | Use session variable to store Hit percentage, because MySQL |
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236 | does not remember last value of SHOW INNODB STATUS hit ratio |
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237 | |
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238 | # 1st query to SHOW INNODB STATUS |
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239 | 0.00 reads/s, 0.00 creates/s, 0.00 writes/s |
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240 | Buffer pool hit rate 1000 / 1000 |
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241 | |
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242 | # 2nd query to SHOW INNODB STATUS |
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243 | 0.00 reads/s, 0.00 creates/s, 0.00 writes/s |
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244 | No buffer pool activity since the last printout |
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245 | */ |
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246 | function GetInnoDBHitRatio() |
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247 | { |
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248 | global $ADODB_FETCH_MODE; |
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249 | |
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250 | $save = $ADODB_FETCH_MODE; |
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251 | $ADODB_FETCH_MODE = ADODB_FETCH_NUM; |
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252 | if ($this->conn->fetchMode !== false) $savem = $this->conn->SetFetchMode(false); |
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253 | |
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254 | $rs = $this->conn->Execute('show innodb status'); |
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255 | |
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256 | if (isset($savem)) $this->conn->SetFetchMode($savem); |
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257 | $ADODB_FETCH_MODE = $save; |
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258 | |
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259 | if (!$rs || $rs->EOF) return 0; |
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260 | $stat = $rs->fields[0]; |
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261 | $rs->Close(); |
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262 | $at = strpos($stat,'Buffer pool hit rate'); |
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263 | $stat = substr($stat,$at,200); |
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264 | if (preg_match('!Buffer pool hit rate\s*([0-9]*) / ([0-9]*)!',$stat,$arr)) { |
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265 | $val = 100*$arr[1]/$arr[2]; |
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266 | $_SESSION['INNODB_HIT_PCT'] = $val; |
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267 | return round($val,2); |
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268 | } else { |
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269 | if (isset($_SESSION['INNODB_HIT_PCT'])) return $_SESSION['INNODB_HIT_PCT']; |
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270 | return 0; |
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271 | } |
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272 | return 0; |
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273 | } |
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274 | |
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275 | function GetKeyHitRatio() |
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276 | { |
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277 | $hits = $this->_DBParameter(array("show status","Key_read_requests")); |
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278 | $reqs = $this->_DBParameter(array("show status","Key_reads")); |
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279 | if ($reqs == 0) return 0; |
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280 | |
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281 | return round(($hits/($reqs+$hits))*100,2); |
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282 | } |
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283 | |
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284 | // start hack |
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285 | var $optimizeTableLow = 'CHECK TABLE %s FAST QUICK'; |
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286 | var $optimizeTableHigh = 'OPTIMIZE TABLE %s'; |
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287 | |
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288 | /** |
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289 | * @see adodb_perf#optimizeTable |
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290 | */ |
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291 | function optimizeTable( $table, $mode = ADODB_OPT_LOW) |
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292 | { |
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293 | if ( !is_string( $table)) return false; |
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294 | |
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295 | $conn = $this->conn; |
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296 | if ( !$conn) return false; |
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297 | |
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298 | $sql = ''; |
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299 | switch( $mode) { |
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300 | case ADODB_OPT_LOW : $sql = $this->optimizeTableLow; break; |
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301 | case ADODB_OPT_HIGH : $sql = $this->optimizeTableHigh; break; |
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302 | default : |
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303 | { |
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304 | // May dont use __FUNCTION__ constant for BC (__FUNCTION__ Added in PHP 4.3.0) |
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305 | ADOConnection::outp( sprintf( "<p>%s: '%s' using of undefined mode '%s'</p>", __CLASS__, __FUNCTION__, $mode)); |
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306 | return false; |
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307 | } |
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308 | } |
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309 | $sql = sprintf( $sql, $table); |
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310 | |
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311 | return $conn->Execute( $sql) !== false; |
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312 | } |
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313 | // end hack |
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314 | } |
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315 | ?> |
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