performance_view_summary

Versions

mediamosa-21

performance_view_summary()

Code

sites/all/modules/devel/performance/performance.module, line 313

<?php
function performance_view_summary() {
  $sum = array();
  $sum[] = variable_get('performance_summary_db', 0);
  $sum[] = variable_get('performance_summary_apc', 0);
  $go = array_sum($sum);

  if (!$go) {
    return t('Summary performance log is not enabled. Go to the <a href="@link">settings page</a> to enable it.', array('@link' => url('admin/config/development/performance_logging')));
  }

  $header = array();

  $header[] =  array('data' => t('Path'),               'field' => 'path');
  $header[] =  array('data' => t('Last access'),        'field' => 'last_access');
  $header[] =  array('data' => t('# accesses'),         'field' => 'num_accesses');
  $header[] =  array('data' => t('Max Memory (MB)'),    'field' => 'bytes_max');
  $header[] =  array('data' => t('Avg Memory (MB)'),    'field' => 'bytes_avg');
  $header[] =  array('data' => t('Milliseconds (Max)'), 'field' => 'millisecs_max');
  $header[] =  array('data' => t('Milliseconds (Avg)'), 'field' => 'millisecs_avg');

  if (variable_get('performance_query', 0)) {
    $header[] = array('data' => t('Query Millisecs (Max)'), 'field' => 'query_timer_max');
    $header[] = array('data' => t('Query Millisecs (Avg)'), 'field' => 'query_timer_avg');
    $header[] = array('data' => t('Query Count (Max)'),     'field' => 'query_count_max');
    $header[] = array('data' => t('Query Count (Avg)'),     'field' => 'query_count_avg');
  }

  $total_rows = $shown = $last_max = $total_bytes = $total_millisecs = $total_accesses = 0;
  $last_min = REQUEST_TIME;

  $threshold = variable_get('performance_threshold_accesses', 0);

  $data_list = array();

  if (variable_get('performance_summary_apc', 0) && drupal_function_exists('apc_cache_info')) {
    // Get the data from the APC cache
    foreach (performance_apc_list_all() as $key) {
      $data_list[] = apc_fetch($key);
    }
  }
  else {
    // Get the data form the database table
    $sql = "SELECT * FROM {performance_summary}";
    $tablesort = tablesort_sql($header);
    $result = pager_query($sql . $tablesort, 50);
    while ($row = db_fetch_array($result)) {
      $data_list[] = $row;
    }
  }

  $rows = array();

  foreach ($data_list as $data) {
    $total_rows++;
    $last_max = max($last_max, $data['last_access']);
    $last_min = min($last_min, $data['last_access']);

    // Calculate running averages
    $total_bytes += $data['bytes_avg'];
    $total_millisecs += $data['millisecs_avg'];
    $total_accesses += $data['num_accesses'];

    $row_data = array();

    if ($data['num_accesses'] > $threshold) {
      $shown++;
      $row_data[] = $data['path'];
      $row_data[] = format_date($data['last_access'], 'small');
      $row_data[] = $data['num_accesses'];
      $row_data[] = number_format($data['bytes_max']/1024/1024, 2);
      $row_data[] = number_format($data['bytes_avg']/1024/1024, 2);
      $row_data[] = number_format($data['millisecs_max'], 1);
      $row_data[] = number_format($data['millisecs_avg'], 1);
      if (variable_get('performance_query', 0)) {
        $row_data[] = number_format($data['query_timer_max'], 1);
        $row_data[] = number_format($data['query_timer_avg'], 1);
        $row_data[] = $data['query_count_max'];
        $row_data[] = $data['query_count_avg'];
      }
    }
    $rows[] = array('data' => $row_data);
  }

  if (!$rows) {
    $rows[] = array(array('data' => t('No statistics available yet.'), 'colspan' => count($header)));
  }

  $output = '';
  if ($threshold) {
    $output .= t('Showing !shown paths with more than !threshold accesses, out of !total total paths.',
      array('!threshold' => $threshold, '!shown' => $shown, '!total' => $total_rows)) . '<br/>';
  }
  else {
    $output .= t('Showing all !total paths.', array('!total' => $total_rows)) . '<br/>';
  }

  // Protect against divide by zero
  if ($total_rows > 0) {
    $mb_avg = number_format($total_bytes/$total_rows/1024/1024, 1);
    $ms_avg = number_format($total_millisecs/$total_rows, 2);
  }
  else {
    $mb_avg = 'n/a';
    $ms_avg = 'n/a';
  }

  $output .= t('Average memory per page: !mb_avg MB', array('!mb_avg' => $mb_avg)) . '<br/>';
  $output .= t('Average milliseconds per page: !ms_avg', array('!ms_avg' => $ms_avg)) . '<br/>';
  $output .= t('Total number of page accesses: !accesses', array('!accesses' => $total_accesses)) . '<br/>';
  $output .= t('First access: !access.', array('!access' => format_date($last_min, 'small'))) . '<br/>';
  $output .= t('Last access: !access.',  array('!access' => format_date($last_max, 'small'))) . '<br/>';

  $output .= theme('table', $header, $rows);
  $output .= theme('pager', NULL, 50, 0);

  return $output;
}
?>