function performance_view_summary in Performance Logging and Monitoring 6.2

Same name and namespace in other branches

1. 5 performance.module \performance_view_summary()
2. 6 performance.module \performance_view_summary()
3. 7.2 performance.module \performance_view_summary()
4. 7 performance.module \performance_view_summary()

Summary page callback.

1 string reference to 'performance_view_summary'

performance_menu in ./performance.module

Implementation of hook_menu().

File

./performance.module, line 492

Logs detailed and/or summary page generation time and memory consumption for page requests. Copyright Khalid Baheyeldin 2008 of http://2bits.com

Code

function performance_view_summary() {
  drupal_set_title(t('Performance logs: Summary'));
  global $pager_page_array, $pager_total_items, $pager_limits, $pager_total;

  // array of element-keyed total number of pages
  $rows = $data_list = array();

  // Build table header.
  $header = array(
    array(
      'data' => t('Path'),
      'field' => 'path',
    ),
    array(
      'data' => t('Last access'),
      'field' => 'last_access',
    ),
    array(
      'data' => t('# accesses'),
      'field' => 'num_accesses',
    ),
    array(
      'data' => t('MB Memory (Max)'),
      'field' => 'bytes_max',
    ),
    array(
      'data' => t('MB Memory (Avg)'),
      'field' => 'bytes_sum',
    ),
    array(
      'data' => t('ms (Max)'),
      'field' => 'ms_max',
    ),
    array(
      'data' => t('ms (Avg)'),
      'field' => 'ms_sum',
    ),
    array(
      'data' => t('Language'),
      'field' => 'language',
    ),
    array(
      'data' => t('Anonymous?'),
      'field' => 'anon',
    ),
  );
  if (variable_get(PERFORMANCE_QUERY_VAR, 0)) {
    $header[] = array(
      'data' => t('Query ms (Max)'),
      'field' => 'query_timer_max',
    );
    $header[] = array(
      'data' => t('Query ms (Avg)'),
      'field' => 'query_timer_sum',
    );
    $header[] = array(
      'data' => t('Query Count (Max)'),
      'field' => 'query_count_max',
    );
    $header[] = array(
      'data' => t('Query Count (Avg)'),
      'field' => 'query_count_sum',
    );
  }

  // Set up pager since this is not done automatically when using caching bins.
  // Note that there can be data in these variables already hence the 'keyed'
  // setup of the arrays.
  $pager_height = 50;
  $pager_total_items = array(
    0 => 0,
  );
  $pager_limits = array(
    0 => $pager_height,
  );
  $page = isset($_GET['page']) ? sprintf('%d', $_GET['page']) : 0;
  $pager_page_array = array(
    0 => $page,
  );
  $data_list = performance_traverse_cache('performance_get_summary');
  if (empty($data_list) && !variable_get('performance_summary', 0)) {
    return t('Summary performance log is not enabled. Go to the !link to enable it.', array(
      '!link' => l(t('settings page'), PERFORMANCE_SETTINGS, array(
        'query' => drupal_get_destination(),
      )),
    ));
  }
  elseif (!variable_get('performance_summary', 0)) {
    drupal_set_message(t('Summary performance log is not enabled! Showing stored logs.'), 'warning');
  }
  $pager_total = array(
    0 => ceil($pager_total_items[0] / $pager_limits[0]),
  );

  // Setup sorting since this is not done automatically when using caching bins.
  $sort_direction = tablesort_get_sort($header);
  $sort_field = tablesort_get_order($header);

  // TODO: find a solution for the avg columns! These need to be calculated
  // first, prolly...
  $data_list = performance_sort_summary($data_list, $sort_direction, $sort_field['sql']);

  // Format data into table.
  $threshold = variable_get('performance_threshold_accesses', 0);
  $total_rows = $shown = $last_max = $total_bytes = $total_ms = $total_accesses = 0;
  $last_min = time();
  foreach ($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_sum'] / $data['num_accesses'];
    $total_ms += $data['ms_sum'] / $data['num_accesses'];
    $total_accesses += $data['num_accesses'];
    $row_data = array();
    if ($data['num_accesses'] > $threshold) {
      $shown++;
      $row_data[] = l($data['path'], $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_sum'] / $data['num_accesses'] / 1024 / 1024, 2);
      $row_data[] = number_format($data['ms_max'], 1);
      $row_data[] = number_format($data['ms_sum'] / $data['num_accesses'], 1);
      $row_data[] = $data['language'];
      $row_data[] = $data['anon'] ? t('Yes') : t('No');
      if (variable_get(PERFORMANCE_QUERY_VAR, 0)) {
        $row_data[] = number_format($data['query_timer_max'], 1);
        $row_data[] = number_format($data['query_timer_sum'] / $data['num_accesses'], 1);
        $row_data[] = $data['query_count_max'];
        $row_data[] = $data['query_count_sum'] / $data['num_accesses'];
      }
    }
    $rows[] = array(
      'data' => $row_data,
    );
  }
  if (!$rows) {
    $rows[] = array(
      array(
        'data' => t('No statistics available yet.'),
        'colspan' => count($header),
      ),
    );
  }
  $output = '<p>';
  if ($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_ms / $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 duration 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 .= '</p><p>&nbsp;</p>';
  $output .= theme('table', $header, $rows);
  $output .= theme('pager', NULL, $pager_height, 0);
  $output .= l(t('Clear logs'), 'admin/reports/performance-logging/clear/summary');
  return $output;
}