server_status.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * displays status variables with descriptions and some hints an optmizing
   5  *  + reset status variables
   6  *
   7  * @package phpMyAdmin
   8  */
   9
  10 /**
  11  * no need for variables importing
  12  * @ignore
  13  */
  14 if (! defined('PMA_NO_VARIABLES_IMPORT')) {
  15     define('PMA_NO_VARIABLES_IMPORT', true);
  16 }
  17 require_once './libraries/common.inc.php';
  18
  19 $GLOBALS['js_include'][] = 'pMap.js';
  20
  21 /**
  22  * Does the common work
  23  */
  24 require './libraries/server_common.inc.php';
  25
  26
  27 /**
  28  * Displays the links
  29  */
  30 require './libraries/server_links.inc.php';
  31
  32 /**
  33  * Replication library
  34  */
  35 require './libraries/replication.inc.php';
  36 require_once './libraries/replication_gui.lib.php';
  37
  38 /**
  39  * Chart generation
  40  */
  41 require_once './libraries/chart.lib.php';
  42
  43 /**
  44  * Messages are built using the message name
  45  */
  46 $strShowStatusBinlog_cache_disk_useDescr = __('The number of transactions that used the temporary binary log cache but that exceeded the value of binlog_cache_size and used a temporary file to store statements from the transaction.');
  47 $strShowStatusBinlog_cache_useDescr = __('The number of transactions that used the temporary binary log cache.');
  48 $strShowStatusCreated_tmp_disk_tablesDescr = __('The number of temporary tables on disk created automatically by the server while executing statements. If Created_tmp_disk_tables is big, you may want to increase the tmp_table_size  value to cause temporary tables to be memory-based instead of disk-based.');
  49 $strShowStatusCreated_tmp_filesDescr = __('How many temporary files mysqld has created.');
  50 $strShowStatusCreated_tmp_tablesDescr = __('The number of in-memory temporary tables created automatically by the server while executing statements.');
  51 $strShowStatusDelayed_errorsDescr = __('The number of rows written with INSERT DELAYED for which some error occurred (probably duplicate key).');
  52 $strShowStatusDelayed_insert_threadsDescr = __('The number of INSERT DELAYED handler threads in use. Every different table on which one uses INSERT DELAYED gets its own thread.');
  53 $strShowStatusDelayed_writesDescr = __('The number of INSERT DELAYED rows written.');
  54 $strShowStatusFlush_commandsDescr  = __('The number of executed FLUSH statements.');
  55 $strShowStatusHandler_commitDescr = __('The number of internal COMMIT statements.');
  56 $strShowStatusHandler_deleteDescr = __('The number of times a row was deleted from a table.');
  57 $strShowStatusHandler_discoverDescr = __('The MySQL server can ask the NDB Cluster storage engine if it knows about a table with a given name. This is called discovery. Handler_discover indicates the number of time tables have been discovered.');
  58 $strShowStatusHandler_read_firstDescr = __('The number of times the first entry was read from an index. If this is high, it suggests that the server is doing a lot of full index scans; for example, SELECT col1 FROM foo, assuming that col1 is indexed.');
  59 $strShowStatusHandler_read_keyDescr = __('The number of requests to read a row based on a key. If this is high, it is a good indication that your queries and tables are properly indexed.');
  60 $strShowStatusHandler_read_nextDescr = __('The number of requests to read the next row in key order. This is incremented if you are querying an index column with a range constraint or if you are doing an index scan.');
  61 $strShowStatusHandler_read_prevDescr = __('The number of requests to read the previous row in key order. This read method is mainly used to optimize ORDER BY ... DESC.');
  62 $strShowStatusHandler_read_rndDescr = __('The number of requests to read a row based on a fixed position. This is high if you are doing a lot of queries that require sorting of the result. You probably have a lot of queries that require MySQL to scan whole tables or you have joins that don\'t use keys properly.');
  63 $strShowStatusHandler_read_rnd_nextDescr = __('The number of requests to read the next row in the data file. This is high if you are doing a lot of table scans. Generally this suggests that your tables are not properly indexed or that your queries are not written to take advantage of the indexes you have.');
  64 $strShowStatusHandler_rollbackDescr = __('The number of internal ROLLBACK statements.');
  65 $strShowStatusHandler_updateDescr = __('The number of requests to update a row in a table.');
  66 $strShowStatusHandler_writeDescr = __('The number of requests to insert a row in a table.');
  67 $strShowStatusInnodb_buffer_pool_pages_dataDescr = __('The number of pages containing data (dirty or clean).');
  68 $strShowStatusInnodb_buffer_pool_pages_dirtyDescr = __('The number of pages currently dirty.');
  69 $strShowStatusInnodb_buffer_pool_pages_flushedDescr = __('The number of buffer pool pages that have been requested to be flushed.');
  70 $strShowStatusInnodb_buffer_pool_pages_freeDescr = __('The number of free pages.');
  71 $strShowStatusInnodb_buffer_pool_pages_latchedDescr = __('The number of latched pages in InnoDB buffer pool. These are pages currently being read or written or that can\'t be flushed or removed for some other reason.');
  72 $strShowStatusInnodb_buffer_pool_pages_miscDescr = __('The number of pages busy because they have been allocated for administrative overhead such as row locks or the adaptive hash index. This value can also be calculated as Innodb_buffer_pool_pages_total - Innodb_buffer_pool_pages_free - Innodb_buffer_pool_pages_data.');
  73 $strShowStatusInnodb_buffer_pool_pages_totalDescr = __('Total size of buffer pool, in pages.');
  74 $strShowStatusInnodb_buffer_pool_read_ahead_rndDescr = __('The number of "random" read-aheads InnoDB initiated. This happens when a query is to scan a large portion of a table but in random order.');
  75 $strShowStatusInnodb_buffer_pool_read_ahead_seqDescr = __('The number of sequential read-aheads InnoDB initiated. This happens when InnoDB does a sequential full table scan.');
  76 $strShowStatusInnodb_buffer_pool_read_requestsDescr = __('The number of logical read requests InnoDB has done.');
  77 $strShowStatusInnodb_buffer_pool_readsDescr = __('The number of logical reads that InnoDB could not satisfy from buffer pool and had to do a single-page read.');
  78 $strShowStatusInnodb_buffer_pool_wait_freeDescr = __('Normally, writes to the InnoDB buffer pool happen in the background. However, if it\'s necessary to read or create a page and no clean pages are available, it\'s necessary to wait for pages to be flushed first. This counter counts instances of these waits. If the buffer pool size was set properly, this value should be small.');
  79 $strShowStatusInnodb_buffer_pool_write_requestsDescr = __('The number writes done to the InnoDB buffer pool.');
  80 $strShowStatusInnodb_data_fsyncsDescr = __('The number of fsync() operations so far.');
  81 $strShowStatusInnodb_data_pending_fsyncsDescr = __('The current number of pending fsync() operations.');
  82 $strShowStatusInnodb_data_pending_readsDescr = __('The current number of pending reads.');
  83 $strShowStatusInnodb_data_pending_writesDescr = __('The current number of pending writes.');
  84 $strShowStatusInnodb_data_readDescr = __('The amount of data read so far, in bytes.');
  85 $strShowStatusInnodb_data_readsDescr = __('The total number of data reads.');
  86 $strShowStatusInnodb_data_writesDescr = __('The total number of data writes.');
  87 $strShowStatusInnodb_data_writtenDescr = __('The amount of data written so far, in bytes.');
  88 $strShowStatusInnodb_dblwr_pages_writtenDescr = __('The number of pages that have been written for doublewrite operations.');
  89 $strShowStatusInnodb_dblwr_writesDescr = __('The number of doublewrite operations that have been performed.');
  90 $strShowStatusInnodb_log_waitsDescr = __('The number of waits we had because log buffer was too small and we had to wait for it to be flushed before continuing.');
  91 $strShowStatusInnodb_log_write_requestsDescr = __('The number of log write requests.');
  92 $strShowStatusInnodb_log_writesDescr = __('The number of physical writes to the log file.');
  93 $strShowStatusInnodb_os_log_fsyncsDescr = __('The number of fsync() writes done to the log file.');
  94 $strShowStatusInnodb_os_log_pending_fsyncsDescr = __('The number of pending log file fsyncs.');
  95 $strShowStatusInnodb_os_log_pending_writesDescr = __('Pending log file writes.');
  96 $strShowStatusInnodb_os_log_writtenDescr = __('The number of bytes written to the log file.');
  97 $strShowStatusInnodb_pages_createdDescr = __('The number of pages created.');
  98 $strShowStatusInnodb_page_sizeDescr = __('The compiled-in InnoDB page size (default 16KB). Many values are counted in pages; the page size allows them to be easily converted to bytes.');
  99 $strShowStatusInnodb_pages_readDescr = __('The number of pages read.');
 100 $strShowStatusInnodb_pages_writtenDescr = __('The number of pages written.');
 101 $strShowStatusInnodb_row_lock_current_waitsDescr = __('The number of row locks currently being waited for.');
 102 $strShowStatusInnodb_row_lock_time_avgDescr = __('The average time to acquire a row lock, in milliseconds.');
 103 $strShowStatusInnodb_row_lock_timeDescr = __('The total time spent in acquiring row locks, in milliseconds.');
 104 $strShowStatusInnodb_row_lock_time_maxDescr = __('The maximum time to acquire a row lock, in milliseconds.');
 105 $strShowStatusInnodb_row_lock_waitsDescr = __('The number of times a row lock had to be waited for.');
 106 $strShowStatusInnodb_rows_deletedDescr = __('The number of rows deleted from InnoDB tables.');
 107 $strShowStatusInnodb_rows_insertedDescr = __('The number of rows inserted in InnoDB tables.');
 108 $strShowStatusInnodb_rows_readDescr = __('The number of rows read from InnoDB tables.');
 109 $strShowStatusInnodb_rows_updatedDescr = __('The number of rows updated in InnoDB tables.');
 110 $strShowStatusKey_blocks_not_flushedDescr = __('The number of key blocks in the key cache that have changed but haven\'t yet been flushed to disk. It used to be known as Not_flushed_key_blocks.');
 111 $strShowStatusKey_blocks_unusedDescr = __('The number of unused blocks in the key cache. You can use this value to determine how much of the key cache is in use.');
 112 $strShowStatusKey_blocks_usedDescr = __('The number of used blocks in the key cache. This value is a high-water mark that indicates the maximum number of blocks that have ever been in use at one time.');
 113 $strShowStatusKey_read_requestsDescr = __('The number of requests to read a key block from the cache.');
 114 $strShowStatusKey_readsDescr = __('The number of physical reads of a key block from disk. If Key_reads is big, then your key_buffer_size value is probably too small. The cache miss rate can be calculated as Key_reads/Key_read_requests.');
 115 $strShowStatusKey_write_requestsDescr = __('The number of requests to write a key block to the cache.');
 116 $strShowStatusKey_writesDescr = __('The number of physical writes of a key block to disk.');
 117 $strShowStatusLast_query_costDescr = __('The total cost of the last compiled query as computed by the query optimizer. Useful for comparing the cost of different query plans for the same query. The default value of 0 means that no query has been compiled yet.');
 118 $strShowStatusNot_flushed_delayed_rowsDescr = __('The number of rows waiting to be written in INSERT DELAYED queues.');
 119 $strShowStatusOpened_tablesDescr = __('The number of tables that have been opened. If opened tables is big, your table cache value is probably too small.');
 120 $strShowStatusOpen_filesDescr = __('The number of files that are open.');
 121 $strShowStatusOpen_streamsDescr = __('The number of streams that are open (used mainly for logging).');
 122 $strShowStatusOpen_tablesDescr = __('The number of tables that are open.');
 123 $strShowStatusQcache_free_blocksDescr = __('The number of free memory blocks in query cache.');
 124 $strShowStatusQcache_free_memoryDescr = __('The amount of free memory for query cache.');
 125 $strShowStatusQcache_hitsDescr = __('The number of cache hits.');
 126 $strShowStatusQcache_insertsDescr = __('The number of queries added to the cache.');
 127 $strShowStatusQcache_lowmem_prunesDescr = __('The number of queries that have been removed from the cache to free up memory for caching new queries. This information can help you tune the query cache size. The query cache uses a least recently used (LRU) strategy to decide which queries to remove from the cache.');
 128 $strShowStatusQcache_not_cachedDescr = __('The number of non-cached queries (not cachable, or not cached due to the query_cache_type setting).');
 129 $strShowStatusQcache_queries_in_cacheDescr = __('The number of queries registered in the cache.');
 130 $strShowStatusQcache_total_blocksDescr = __('The total number of blocks in the query cache.');
 131 $strShowStatusReset = _pgettext('$strShowStatusReset', 'Reset');
 132 $strShowStatusRpl_statusDescr = __('The status of failsafe replication (not yet implemented).');
 133 $strShowStatusSelect_full_joinDescr = __('The number of joins that do not use indexes. If this value is not 0, you should carefully check the indexes of your tables.');
 134 $strShowStatusSelect_full_range_joinDescr = __('The number of joins that used a range search on a reference table.');
 135 $strShowStatusSelect_range_checkDescr = __('The number of joins without keys that check for key usage after each row. (If this is not 0, you should carefully check the indexes of your tables.)');
 136 $strShowStatusSelect_rangeDescr = __('The number of joins that used ranges on the first table. (It\'s normally not critical even if this is big.)');
 137 $strShowStatusSelect_scanDescr = __('The number of joins that did a full scan of the first table.');
 138 $strShowStatusSlave_open_temp_tablesDescr = __('The number of temporary tables currently open by the slave SQL thread.');
 139 $strShowStatusSlave_retried_transactionsDescr = __('Total (since startup) number of times the replication slave SQL thread has retried transactions.');
 140 $strShowStatusSlave_runningDescr = __('This is ON if this server is a slave that is connected to a master.');
 141 $strShowStatusSlow_launch_threadsDescr = __('The number of threads that have taken more than slow_launch_time seconds to create.');
 142 $strShowStatusSlow_queriesDescr = __('The number of queries that have taken more than long_query_time seconds.');
 143 $strShowStatusSort_merge_passesDescr = __('The number of merge passes the sort algorithm has had to do. If this value is large, you should consider increasing the value of the sort_buffer_size system variable.');
 144 $strShowStatusSort_rangeDescr = __('The number of sorts that were done with ranges.');
 145 $strShowStatusSort_rowsDescr = __('The number of sorted rows.');
 146 $strShowStatusSort_scanDescr = __('The number of sorts that were done by scanning the table.');
 147 $strShowStatusTable_locks_immediateDescr = __('The number of times that a table lock was acquired immediately.');
 148 $strShowStatusTable_locks_waitedDescr = __('The number of times that a table lock could not be acquired immediately and a wait was needed. If this is high, and you have performance problems, you should first optimize your queries, and then either split your table or tables or use replication.');
 149 $strShowStatusThreads_cachedDescr = __('The number of threads in the thread cache. The cache hit rate can be calculated as Threads_created/Connections. If this value is red you should raise your thread_cache_size.');
 150 $strShowStatusThreads_connectedDescr = __('The number of currently open connections.');
 151 $strShowStatusThreads_createdDescr = __('The number of threads created to handle connections. If Threads_created is big, you may want to increase the thread_cache_size value. (Normally this doesn\'t give a notable performance improvement if you have a good thread implementation.)');
 152 $strShowStatusThreads_runningDescr = __('The number of threads that are not sleeping.');
 153
 154 /**
 155  * Displays the sub-page heading
 156  */
 157 echo '<div id="serverstatus">' . "\n";
 158 echo '<h2>' . "\n"
 159    . ($GLOBALS['cfg']['MainPageIconic']
 160        ? '<img class="icon" src="' . $GLOBALS['pmaThemeImage'] .
 161          's_status.png" width="16" height="16" alt="" />'
 162        : '')
 163    . __('Runtime Information') . "\n"
 164    . '</h2>' . "\n";
 165
 166
 167 /**
 168  * flush status variables if requested
 169  */
 170 if (isset($_REQUEST['flush'])) {
 171     $_flush_commands = array(
 172         'STATUS',
 173         'TABLES',
 174         'QUERY CACHE',
 175     );
 176
 177     if (in_array($_REQUEST['flush'], $_flush_commands)) {
 178         PMA_DBI_query('FLUSH ' . $_REQUEST['flush'] . ';');
 179     }
 180     unset($_flush_commands);
 181 }
 182
 183
 184 /**
 185  * get status from server
 186  */
 187 $server_status = PMA_DBI_fetch_result('SHOW GLOBAL STATUS', 0, 1);
 188
 189 /**
 190  * for some calculations we require also some server settings
 191  */
 192 $server_variables = PMA_DBI_fetch_result('SHOW GLOBAL VARIABLES', 0, 1);
 193
 194 /**
 195  * starttime calculation
 196  */
 197 $start_time = PMA_DBI_fetch_value(
 198     'SELECT UNIX_TIMESTAMP() - ' . $server_status['Uptime']);
 199
 200
 201 /**
 202  * cleanup some deprecated values
 203  */
 204 $deprecated = array(
 205     'Com_prepare_sql' => 'Com_stmt_prepare',
 206     'Com_execute_sql' => 'Com_stmt_execute',
 207     'Com_dealloc_sql' => 'Com_stmt_close',
 208 );
 209
 210 foreach ($deprecated as $old => $new) {
 211     if (isset($server_status[$old])
 212       && isset($server_status[$new])) {
 213         unset($server_status[$old]);
 214     }
 215 }
 216 unset($deprecated);
 217
 218
 219 /**
 220  * calculate some values
 221  */
 222 // Key_buffer_fraction
 223 if (isset($server_status['Key_blocks_unused'])
 224   && isset($server_variables['key_cache_block_size'])
 225   && isset($server_variables['key_buffer_size'])) {
 226     $server_status['Key_buffer_fraction_%'] =
 227         100
 228       - $server_status['Key_blocks_unused']
 229       * $server_variables['key_cache_block_size']
 230       / $server_variables['key_buffer_size']
 231       * 100;
 232 } elseif (
 233      isset($server_status['Key_blocks_used'])
 234   && isset($server_variables['key_buffer_size'])) {
 235     $server_status['Key_buffer_fraction_%'] =
 236         $server_status['Key_blocks_used']
 237       * 1024
 238       / $server_variables['key_buffer_size'];
 239   }
 240
 241 // Ratio for key read/write
 242 if (isset($server_status['Key_writes'])
 243     && isset($server_status['Key_write_requests'])
 244     && $server_status['Key_write_requests'] > 0)
 245         $server_status['Key_write_ratio_%'] = 100 * $server_status['Key_writes'] / $server_status['Key_write_requests'];
 246
 247 if (isset($server_status['Key_reads'])
 248     && isset($server_status['Key_read_requests'])
 249     && $server_status['Key_read_requests'] > 0)
 250         $server_status['Key_read_ratio_%'] = 100 * $server_status['Key_reads'] / $server_status['Key_read_requests'];
 251
 252 // Threads_cache_hitrate
 253 if (isset($server_status['Threads_created'])
 254   && isset($server_status['Connections'])
 255   && $server_status['Connections'] > 0) {
 256     $server_status['Threads_cache_hitrate_%'] =
 257         100
 258       - $server_status['Threads_created']
 259       / $server_status['Connections']
 260       * 100;
 261 }
 262
 263 // Format Uptime_since_flush_status : show as days, hours, minutes, seconds
 264 if (isset($server_status['Uptime_since_flush_status'])) {
 265     $server_status['Uptime_since_flush_status'] = PMA_timespanFormat($server_status['Uptime_since_flush_status']);
 266 }
 267
 268 /**
 269  * define some alerts
 270  */
 271 // name => max value before alert
 272 $alerts = array(
 273     // lower is better
 274     // variable => max value
 275     'Aborted_clients' => 0,
 276     'Aborted_connects' => 0,
 277
 278     'Binlog_cache_disk_use' => 0,
 279
 280     'Created_tmp_disk_tables' => 0,
 281
 282     'Handler_read_rnd' => 0,
 283     'Handler_read_rnd_next' => 0,
 284
 285     'Innodb_buffer_pool_pages_dirty' => 0,
 286     'Innodb_buffer_pool_reads' => 0,
 287     'Innodb_buffer_pool_wait_free' => 0,
 288     'Innodb_log_waits' => 0,
 289     'Innodb_row_lock_time_avg' => 10, // ms
 290     'Innodb_row_lock_time_max' => 50, // ms
 291     'Innodb_row_lock_waits' => 0,
 292
 293     'Slow_queries' => 0,
 294     'Delayed_errors' => 0,
 295     'Select_full_join' => 0,
 296     'Select_range_check' => 0,
 297     'Sort_merge_passes' => 0,
 298     'Opened_tables' => 0,
 299     'Table_locks_waited' => 0,
 300     'Qcache_lowmem_prunes' => 0,
 301     'Slow_launch_threads' => 0,
 302
 303     // depends on Key_read_requests
 304     // normaly lower then 1:0.01
 305     'Key_reads' => (0.01 * $server_status['Key_read_requests']),
 306     // depends on Key_write_requests
 307     // normaly nearly 1:1
 308     'Key_writes' => (0.9 * $server_status['Key_write_requests']),
 309
 310     'Key_buffer_fraction' => 0.5,
 311
 312     // alert if more than 95% of thread cache is in use
 313     'Threads_cached' => 0.95 * $server_variables['thread_cache_size']
 314
 315     // higher is better
 316     // variable => min value
 317     //'Handler read key' => '> ',
 318 );
 319
 320
 321 /**
 322  * split variables in sections
 323  */
 324 $allocations = array(
 325     // variable name => section
 326
 327     'Com_'              => 'com',
 328     'Innodb_'           => 'innodb',
 329     'Ndb_'              => 'ndb',
 330     'Handler_'          => 'handler',
 331     'Qcache_'           => 'qcache',
 332     'Threads_'          => 'threads',
 333     'Slow_launch_threads' => 'threads',
 334
 335     'Binlog_cache_'     => 'binlog_cache',
 336     'Created_tmp_'      => 'created_tmp',
 337     'Key_'              => 'key',
 338
 339     'Delayed_'          => 'delayed',
 340     'Not_flushed_delayed_rows' => 'delayed',
 341
 342     'Flush_commands'    => 'query',
 343     'Last_query_cost'   => 'query',
 344     'Slow_queries'      => 'query',
 345
 346     'Select_'           => 'select',
 347     'Sort_'             => 'sort',
 348
 349     'Open_tables'       => 'table',
 350     'Opened_tables'     => 'table',
 351     'Table_locks_'      => 'table',
 352
 353     'Rpl_status'        => 'repl',
 354     'Slave_'            => 'repl',
 355
 356     'Tc_'               => 'tc',
 357
 358     'Ssl_'              => 'ssl',
 359 );
 360
 361 $sections = array(
 362     // section => section name (description)
 363     'com'           => array('title' => ''),
 364     'query'         => array('title' => __('SQL query')),
 365     'innodb'        => array('title' => 'InnoDB'),
 366     'ndb'           => array('title' => 'NDB'),
 367     'handler'       => array('title' => __('Handler')),
 368     'qcache'        => array('title' => __('Query cache')),
 369     'threads'       => array('title' => __('Threads')),
 370     'binlog_cache'  => array('title' => __('Binary log')),
 371     'created_tmp'   => array('title' => __('Temporary data')),
 372     'delayed'       => array('title' => __('Delayed inserts')),
 373     'key'           => array('title' => __('Key cache')),
 374     'select'        => array('title' => __('Joins')),
 375     'repl'          => array('title' => __('Replication')),
 376     'sort'          => array('title' => __('Sorting')),
 377     'table'         => array('title' => __('Tables')),
 378     'tc'            => array('title' => __('Transaction coordinator')),
 379     'ssl'           => array('title' => 'SSL'),
 380 );
 381
 382 /**
 383  * define some needfull links/commands
 384  */
 385 // variable or section name => (name => url)
 386 $links = array();
 387
 388 $links['table'][__('Flush (close) all tables')]
 389     = $PMA_PHP_SELF . '?flush=TABLES&amp;' . PMA_generate_common_url();
 390 $links['table'][__('Show open tables')]
 391     = 'sql.php?sql_query=' . urlencode('SHOW OPEN TABLES') .
 392       '&amp;goto=server_status.php&amp;' . PMA_generate_common_url();
 393
 394 if ($server_master_status) {
 395   $links['repl'][__('Show slave hosts')]
 396     = 'sql.php?sql_query=' . urlencode('SHOW SLAVE HOSTS') .
 397       '&amp;goto=server_status.php&amp;' . PMA_generate_common_url();
 398   $links['repl'][__('Show master status')] = '#replication_master';
 399 }
 400 if ($server_slave_status) {
 401   $links['repl'][__('Show slave status')] = '#replication_slave';
 402 }
 403
 404 $links['repl']['doc'] = 'replication';
 405
 406 $links['qcache'][__('Flush query cache')]
 407     = $PMA_PHP_SELF . '?flush=' . urlencode('QUERY CACHE') . '&amp;' .
 408       PMA_generate_common_url();
 409 $links['qcache']['doc'] = 'query_cache';
 410
 411 $links['threads'][__('Show processes')]
 412     = 'server_processlist.php?' . PMA_generate_common_url();
 413 $links['threads']['doc'] = 'mysql_threads';
 414
 415 $links['key']['doc'] = 'myisam_key_cache';
 416
 417 $links['binlog_cache']['doc'] = 'binary_log';
 418
 419 $links['Slow_queries']['doc'] = 'slow_query_log';
 420
 421 $links['innodb'][__('Variables')]
 422     = 'server_engines.php?engine=InnoDB&amp;' . PMA_generate_common_url();
 423 $links['innodb'][__('InnoDB Status')]
 424     = 'server_engines.php?engine=InnoDB&amp;page=Status&amp;' .
 425       PMA_generate_common_url();
 426 $links['innodb']['doc'] = 'innodb';
 427
 428
 429 // sort status vars into arrays
 430 foreach ($server_status as $name => $value) {
 431     if (isset($allocations[$name])) {
 432         $sections[$allocations[$name]]['vars'][$name] = $value;
 433         unset($server_status[$name]);
 434     } else {
 435         foreach ($allocations as $filter => $section) {
 436             if (preg_match('/^' . $filter . '/', $name)
 437               && isset($server_status[$name])) {
 438                 unset($server_status[$name]);
 439                 $sections[$section]['vars'][$name] = $value;
 440             }
 441         }
 442     }
 443 }
 444 unset($name, $value, $filter, $section, $allocations);
 445
 446 // rest
 447 $sections['all']['vars'] =& $server_status;
 448
 449 $hour_factor    = 3600 / $server_status['Uptime'];
 450
 451 /**
 452  * start output
 453  */
 454 ?>
 455 <div id="statuslinks">
 456     <a href="<?php echo
 457         $PMA_PHP_SELF . '?' . PMA_generate_common_url(); ?>"
 458        ><?php echo __('Refresh'); ?></a>
 459     <a href="<?php echo
 460         $PMA_PHP_SELF . '?flush=STATUS&amp;' . PMA_generate_common_url(); ?>"
 461        ><?php echo _pgettext('for Show status', 'Reset'); ?></a>
 462        <?php echo PMA_showMySQLDocu('server_status_variables','server_status_variables'); ?>
 463 </div>
 464
 465 <p>
 466 <?php
 467 echo sprintf(__('This MySQL server has been running for %s. It started up on %s.'),
 468     PMA_timespanFormat($server_status['Uptime']),
 469     PMA_localisedDate($start_time)) . "\n";
 470 ?>
 471 </p>
 472
 473 <?php
 474 if ($server_master_status || $server_slave_status) {
 475     echo '<p>';
 476     if ($server_master_status && $server_slave_status) {
 477         echo __('This MySQL server works as <b>master</b> and <b>slave</b> in <b>replication</b> process.');
 478     } elseif ($server_master_status) {
 479         echo __('This MySQL server works as <b>master</b> in <b>replication</b> process.');
 480     } elseif ($server_slave_status) {
 481         echo __('This MySQL server works as <b>slave</b> in <b>replication</b> process.');
 482     }
 483     echo __('For further information about replication status on the server, please visit the <a href=#replication>replication section</a>.');
 484     echo '</p>';
 485 }
 486 ?>
 487
 488 <div id="sectionlinks">
 489 <?php
 490 foreach ($sections as $section_name => $section) {
 491     if (! empty($section['vars']) && ! empty($section['title'])) {
 492         echo '<a href="' . $PMA_PHP_SELF . '?' .
 493              PMA_generate_common_url() . '#' . $section_name . '">' .
 494              $section['title'] . '</a>' . "\n";
 495     }
 496 }
 497 ?>
 498 </div>
 499
 500 <h3><?php echo __('<b>Server traffic</b>: These tables show the network traffic statistics of this MySQL server since its startup.'); ?></h3>
 501
 502 <table id="serverstatustraffic" class="data">
 503 <thead>
 504 <tr>
 505     <th colspan="2"><?php echo __('Traffic') . '&nbsp;' . PMA_showHint(__('On a busy server, the byte counters may overrun, so those statistics as reported by the MySQL server may be incorrect.')); ?></th>
 506     <th>&oslash; <?php echo __('per hour'); ?></th>
 507 </tr>
 508 </thead>
 509 <tbody>
 510 <tr class="odd">
 511     <th class="name"><?php echo __('Received'); ?></th>
 512     <td class="value"><?php echo
 513         implode(' ',
 514             PMA_formatByteDown($server_status['Bytes_received'], 2, 1)); ?></td>
 515     <td class="value"><?php echo
 516         implode(' ',
 517             PMA_formatByteDown(
 518                 $server_status['Bytes_received'] * $hour_factor, 2, 1)); ?></td>
 519 </tr>
 520 <tr class="even">
 521     <th class="name"><?php echo __('Sent'); ?></th>
 522     <td class="value"><?php echo
 523         implode(' ',
 524             PMA_formatByteDown($server_status['Bytes_sent'], 2, 1)); ?></td>
 525     <td class="value"><?php echo
 526         implode(' ',
 527             PMA_formatByteDown(
 528                 $server_status['Bytes_sent'] * $hour_factor, 2, 1)); ?></td>
 529 </tr>
 530 <tr class="odd">
 531     <th class="name"><?php echo __('Total'); ?></th>
 532     <td class="value"><?php echo
 533         implode(' ',
 534             PMA_formatByteDown(
 535                 $server_status['Bytes_received'] + $server_status['Bytes_sent'], 2, 1)
 536         ); ?></td>
 537     <td class="value"><?php echo
 538         implode(' ',
 539             PMA_formatByteDown(
 540                 ($server_status['Bytes_received'] + $server_status['Bytes_sent'])
 541                 * $hour_factor, 2, 1)
 542         ); ?></td>
 543 </tr>
 544 </tbody>
 545 </table>
 546
 547 <table id="serverstatusconnections" class="data">
 548 <thead>
 549 <tr>
 550     <th colspan="2"><?php echo __('Connections'); ?></th>
 551     <th>&oslash; <?php echo __('per hour'); ?></th>
 552     <th>%</th>
 553 </tr>
 554 </thead>
 555 <tbody>
 556 <tr class="odd">
 557     <th class="name"><?php echo __('max. concurrent connections'); ?></th>
 558     <td class="value"><?php echo
 559         PMA_formatNumber($server_status['Max_used_connections'], 0); ?>  </td>
 560     <td class="value">--- </td>
 561     <td class="value">--- </td>
 562 </tr>
 563 <tr class="even">
 564     <th class="name"><?php echo __('Failed attempts'); ?></th>
 565     <td class="value"><?php echo
 566         PMA_formatNumber($server_status['Aborted_connects'], 4, 0); ?></td>
 567     <td class="value"><?php echo
 568         PMA_formatNumber($server_status['Aborted_connects'] * $hour_factor,
 569             4, 2); ?></td>
 570     <td class="value"><?php echo
 571         $server_status['Connections'] > 0
 572       ? PMA_formatNumber(
 573             $server_status['Aborted_connects'] * 100 / $server_status['Connections'],
 574             0, 2) . '%'
 575       : '--- '; ?></td>
 576 </tr>
 577 <tr class="odd">
 578     <th class="name"><?php echo __('Aborted'); ?></th>
 579     <td class="value"><?php echo
 580         PMA_formatNumber($server_status['Aborted_clients'], 4, 0); ?></td>
 581     <td class="value"><?php echo
 582         PMA_formatNumber($server_status['Aborted_clients'] * $hour_factor,
 583             4, 2); ?></td>
 584     <td class="value"><?php echo
 585         $server_status['Connections'] > 0
 586       ? PMA_formatNumber(
 587             $server_status['Aborted_clients'] * 100 / $server_status['Connections'],
 588             0, 2) . '%'
 589       : '--- '; ?></td>
 590 </tr>
 591 <tr class="even">
 592     <th class="name"><?php echo __('Total'); ?></th>
 593     <td class="value"><?php echo
 594         PMA_formatNumber($server_status['Connections'], 4, 0); ?></td>
 595     <td class="value"><?php echo
 596         PMA_formatNumber($server_status['Connections'] * $hour_factor,
 597             4, 2); ?></td>
 598     <td class="value"><?php echo
 599         PMA_formatNumber(100, 0, 2); ?>%</td>
 600 </tr>
 601 </tbody>
 602 </table>
 603
 604 <hr class="clearfloat" />
 605
 606 <h3><?php echo
 607     sprintf(__('<b>Query statistics</b>: Since its startup, %s queries have been sent to the server.'),
 608         PMA_formatNumber($server_status['Questions'], 0)); ?></h3>
 609
 610 <table id="serverstatusqueriessummary" class="data">
 611 <thead>
 612 <tr>
 613     <th><?php echo __('Total'); ?></th>
 614     <th>&oslash; <?php echo __('per hour'); ?></th>
 615     <th>&oslash; <?php echo __('per minute'); ?></th>
 616     <th>&oslash; <?php echo __('per second'); ?></th>
 617 </tr>
 618 </thead>
 619 <tbody>
 620 <tr class="odd">
 621     <td class="value"><?php echo
 622         PMA_formatNumber($server_status['Questions'], 4, 0); ?></td>
 623     <td class="value"><?php echo
 624         PMA_formatNumber($server_status['Questions'] * $hour_factor,
 625             3, 2); ?></td>
 626     <td class="value"><?php echo
 627         PMA_formatNumber(
 628             $server_status['Questions'] * 60 / $server_status['Uptime'],
 629             3, 2); ?></td>
 630     <td class="value"><?php echo
 631         PMA_formatNumber(
 632             $server_status['Questions'] / $server_status['Uptime'],
 633             3, 2); ?></td>
 634 </tr>
 635 </tbody>
 636 </table>
 637
 638 <div id="serverstatusqueriesdetails">
 639 <?php
 640
 641 $used_queries = $sections['com']['vars'];
 642 // reverse sort by value to show most used statements first
 643 arsort($used_queries);
 644 // remove all zero values from the end
 645 while (end($used_queries) == 0) {
 646     array_pop($used_queries);
 647 }
 648
 649 // number of tables to split values into
 650 $tables         = 3;
 651 $max_rows_per_table = (int) ceil(count($used_queries) / $tables);
 652 $current_table  = 0;
 653 $odd_row        = true;
 654 $count_displayed_rows      = 0;
 655 $perc_factor    = 100 / ($server_status['Questions'] - $server_status['Connections']);
 656
 657 foreach ($used_queries as $name => $value) {
 658     $current_table++;
 659     if ($count_displayed_rows === 0 || $count_displayed_rows === $max_rows_per_table) {
 660         $odd_row = true;
 661         if ($count_displayed_rows === $max_rows_per_table) {
 662             echo '    </tbody>' . "\n";
 663             echo '    </table>' . "\n";
 664             $count_displayed_rows = 0;
 665         }
 666 ?>
 667     <table id="serverstatusqueriesdetails<?php echo $current_table; ?>" class="data">
 668     <col class="namecol" />
 669     <col class="valuecol" span="3" />
 670     <thead>
 671         <tr><th colspan="2"><?php echo __('Query type'); ?></th>
 672             <th>&oslash; <?php echo __('per hour'); ?></th>
 673             <th>%</th>
 674         </tr>
 675     </thead>
 676     <tbody>
 677 <?php
 678     } else {
 679         $odd_row = !$odd_row;
 680     }
 681     $count_displayed_rows++;
 682
 683 // For the percentage column, use Questions - Connections, because
 684 // the number of connections is not an item of the Query types
 685 // but is included in Questions. Then the total of the percentages is 100.
 686     $name = str_replace('Com_', '', $name);
 687     $name = str_replace('_', ' ', $name);
 688 ?>
 689         <tr class="<?php echo $odd_row ? 'odd' : 'even'; ?>">
 690             <th class="name"><?php echo htmlspecialchars($name); ?></th>
 691             <td class="value"><?php echo PMA_formatNumber($value, 4, 0); ?></td>
 692             <td class="value"><?php echo
 693                 PMA_formatNumber($value * $hour_factor, 3, 3); ?></td>
 694             <td class="value"><?php echo
 695                 PMA_formatNumber($value * $perc_factor, 0, 2); ?>%</td>
 696         </tr>
 697 <?php
 698 }
 699 ?>
 700     </tbody>
 701     </table>
 702     <div class="clearfloat"></div>
 703 </div>
 704
 705 <div>
 706     <?php
 707     echo PMA_chart_status($used_queries);
 708     ?>
 709 </div>
 710
 711 <div id="serverstatussection">
 712 <?php
 713 //Unset used variables
 714 unset(
 715     $tables, $max_rows_per_table, $current_table, $count_displayed_rows, $perc_factor,
 716     $hour_factor, $sections['com'],
 717     $server_status['Aborted_clients'], $server_status['Aborted_connects'],
 718     $server_status['Max_used_connections'], $server_status['Bytes_received'],
 719     $server_status['Bytes_sent'], $server_status['Connections'],
 720     $server_status['Questions'], $server_status['Uptime'],
 721     $used_queries
 722 );
 723
 724 foreach ($sections as $section_name => $section) {
 725     if (! empty($section['vars'])) {
 726 ?>
 727     <table class="data" id="serverstatussection<?php echo $section_name; ?>">
 728     <caption class="tblHeaders">
 729         <a class="top"
 730            href="<?php echo $PMA_PHP_SELF . '?' .
 731                  PMA_generate_common_url() . '#serverstatus'; ?>"
 732            name="<?php echo $section_name; ?>"><?php echo __('Begin'); ?>
 733             <?php echo
 734                 ($GLOBALS['cfg']['MainPageIconic']
 735               ? '<img src="' . $GLOBALS['pmaThemeImage'] .
 736                 's_asc.png" width="11" height="9" align="middle" alt="" />'
 737               : ''); ?>
 738         </a>
 739 <?php
 740 if (! empty($section['title'])) {
 741     echo $section['title'];
 742 }
 743 ?>
 744     </caption>
 745     <col class="namecol" />
 746     <col class="valuecol" />
 747     <col class="descrcol" />
 748     <thead>
 749         <tr>
 750             <th><?php echo __('Variable'); ?></th>
 751             <th><?php echo __('Value'); ?></th>
 752             <th><?php echo __('Description'); ?></th>
 753         </tr>
 754     </thead>
 755 <?php
 756         if (! empty($links[$section_name])) {
 757 ?>
 758     <tfoot>
 759         <tr class="tblFooters">
 760             <th colspan="3" class="tblFooters">
 761 <?php
 762             foreach ($links[$section_name] as $link_name => $link_url) {
 763                 if ('doc' == $link_name) {
 764                     echo PMA_showMySQLDocu($link_url, $link_url);
 765                 } else {
 766                     echo '<a href="' . $link_url . '">' . $link_name . '</a>' . "\n";
 767                 }
 768             }
 769             unset($link_url, $link_name);
 770 ?>
 771             </th>
 772         </tr>
 773     </tfoot>
 774 <?php
 775         }
 776 ?>
 777     <tbody>
 778 <?php
 779         $odd_row = false;
 780         foreach ($section['vars'] as $name => $value) {
 781             $odd_row = !$odd_row;
 782 ?>
 783         <tr class="<?php echo $odd_row ? 'odd' : 'even'; ?>">
 784             <th class="name"><?php echo htmlspecialchars($name); ?></th>
 785             <td class="value"><?php
 786             if (isset($alerts[$name])) {
 787                 if ($value > $alerts[$name]) {
 788                     echo '<span class="attention">';
 789                 } else {
 790                     echo '<span class="allfine">';
 791                 }
 792             }
 793             if ('%' === substr($name, -1, 1)) {
 794                 echo PMA_formatNumber($value, 0, 2) . ' %';
 795             } elseif (is_numeric($value) && $value == (int) $value) {
 796                 echo PMA_formatNumber($value, 3, 1);
 797             } elseif (is_numeric($value)) {
 798                 echo PMA_formatNumber($value, 3, 1);
 799             } else {
 800                 echo htmlspecialchars($value);
 801             }
 802             if (isset($alerts[$name])) {
 803                 echo '</span>';
 804             }
 805             ?></td>
 806             <td class="descr">
 807             <?php
 808             if (isset($GLOBALS['strShowStatus' . $name . 'Descr'])) {
 809                 echo $GLOBALS['strShowStatus' . $name . 'Descr'];
 810             }
 811
 812             if (isset($links[$name])) {
 813                 foreach ($links[$name] as $link_name => $link_url) {
 814                     if ('doc' == $link_name) {
 815                         echo PMA_showMySQLDocu($link_url, $link_url);
 816                     } else {
 817                         echo ' <a href="' . $link_url . '">' . $link_name . '</a>' .
 818                         "\n";
 819                     }
 820                 }
 821                 unset($link_url, $link_name);
 822             }
 823             ?>
 824             </td>
 825         </tr>
 826 <?php
 827         }
 828         unset($name, $value);
 829 ?>
 830     </tbody>
 831     </table>
 832 <?php
 833     }
 834 }
 835 unset($section_name, $section, $sections, $server_status, $odd_row, $alerts);
 836 ?>
 837 </div>
 838 <?php
 839 /* if the server works as master or slave in replication process, display useful information */
 840 if ($server_master_status || $server_slave_status)
 841 {
 842 ?>
 843   <hr class="clearfloat" />
 844
 845   <h3><a name="replication"></a><?php echo __('Replication status'); ?></h3>
 846 <?php
 847
 848     foreach ($replication_types as $type)
 849     {
 850         if (${"server_{$type}_status"}) {
 851             PMA_replication_print_status_table($type);
 852         }
 853     }
 854     unset($types);
 855 }
 856 ?>
 857
 858 </div>
 859
 860 <?php
 861 /**
 862  * Sends the footer
 863  */
 864 require './libraries/footer.inc.php';
 865 ?>