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<?php
define('PERFORMANCE_KEY', 'dru-perf:' . $_SERVER['HTTP_HOST'] . ':');
function performance_menu($may_cache) {
$items = array();
if ($may_cache) {
$items[] = array(
'path' => 'admin/settings/performance_logging',
'title' => t('Performance logging'),
'description' => t('Logs performance data: page generation times and memory usage.'),
'access' => user_access('access administration pages'),
'callback' => 'drupal_get_form',
'callback arguments' => array(
'performance_settings',
),
);
$items[] = array(
'path' => 'admin/settings/performance_logging/apc_clear',
'title' => t('Clear APC'),
'description' => t('Clears performance statistics collected in APC.'),
'access' => user_access('access administration pages'),
'callback' => 'drupal_get_form',
'callback arguments' => array(
'performance_clear_apc_confirm',
),
);
$items[] = array(
'path' => 'admin/logs/performance_logging_summary',
'title' => t('Performance Logs: Summary'),
'description' => t('View summary performance logs: page generation times and memory usage.'),
'access' => user_access('access administration pages'),
'callback' => 'performance_view_summary',
);
$items[] = array(
'path' => 'admin/logs/performance_logging_details',
'title' => t('Performance Logs: Details'),
'description' => t('View detailed, per page, performance logs: page generation times and memory usage.'),
'access' => user_access('access administration pages'),
'callback' => 'performance_view_details',
);
}
return $items;
}
function performance_settings() {
$options = array(
0 => t('Disabled'),
1 => t('Enabled'),
);
if (function_exists('apc_cache_info')) {
drupal_set_message(t('APC is enabled. It is reasonably safe to enable summary logging on live sites.'));
}
else {
drupal_set_message(t('APC is not enabled. It is <strong>not</strong> safe to enable summary logging to the database on live sites.'), 'error');
}
$form['mode'] = array(
'#type' => 'fieldset',
'#title' => t('Logging mode'),
'#collapsible' => TRUE,
);
$form['mode']['performance_detail'] = array(
'#type' => 'select',
'#title' => t('Detailed logging'),
'#default_value' => variable_get('performance_detail', 0),
'#options' => $options,
'#description' => t('Log memory usage and page generation times for every page. This logging mode is <strong>not</strong> suitable for large sites, as it can degrade performance severly. It is intended for use by developers, or on a test copy of the site.'),
);
$form['mode']['performance_summary_db'] = array(
'#type' => 'select',
'#title' => t('Summary logging (DB)'),
'#default_value' => variable_get('performance_summary_db', 0),
'#options' => $options,
'#description' => t('Log summary data, such as average and maximum page generation times and memory usage to the database. This logging mode is <strong>not</strong> suitable for most live sites.'),
);
$disabled = TRUE;
if (function_exists('apc_cache_info')) {
$disabled = FALSE;
}
$form['mode']['performance_summary_apc'] = array(
'#type' => 'select',
'#title' => t('Summary logging (APC)'),
'#default_value' => variable_get('performance_summary_apc', 0),
'#options' => $options,
'#disabled' => $disabled,
'#description' => t('Log summary data, such as average and maximum page generation times and memory usage to APC, if installed. The summary will be stored in APC memory, and hence there is no load on the database. This logging to APC is suitable for most live sites, unless the number of unique page accesses is excessively high.'),
);
$form['other'] = array(
'#type' => 'fieldset',
'#title' => t('Other'),
'#collapsible' => TRUE,
);
$form['other']['dev_query'] = array(
'#type' => 'select',
'#title' => t('Database Query timing and count'),
'#default_value' => variable_get('dev_query', 0),
'#options' => $options,
'#description' => t('Log database timing and count for each page. This is useful to know if the bottleneck is in excessive database query counts, or the time required to execute those queries is high. Please note that this will automatically be enabled and disabled in the settings of the devel module. Also note that enabling this will incurr some memory overhead as query times and the actual query strings are cached in memory as arrays.'),
);
$form['other']['performance_threshold_accesses'] = array(
'#type' => 'select',
'#title' => t('Accesses threshold'),
'#default_value' => variable_get('performance_threshold_accesses', 0),
'#options' => array(
0,
1,
2,
5,
10,
),
'#description' => t('When displaying the summary report and using APC, only pages with the number of accesses larger than the specified threshold will be shown. Also, when cron runs, pages with that number of accesses or less will be removed, so as not to overflow APC\'s shared memory. This is useful on a live site with a high volume of hits. On a development site, you probably want this set to 0, so you can see all pages.'),
);
return system_settings_form($form);
}
function performance_init() {
register_shutdown_function('performance_shutdown');
}
function performance_shutdown() {
global $queries;
if ($_GET['q']) {
$path = $_GET['q'];
}
else {
$path = variable_get('site_frontpage', 'node');
}
$params = array(
'timer' => timer_read('page'),
'path' => $path,
);
if (function_exists('memory_get_peak_usage')) {
$params['mem'] = memory_get_peak_usage(TRUE);
}
else {
$params['mem'] = 0;
}
$query_count = 0;
$query_timer = 0;
if (variable_get('dev_query', 0) && is_array($queries)) {
foreach ($queries as $query) {
$sum += $query[1];
}
$query_count = count($queries);
$query_timer = round($sum * 1000, 2);
}
$params['query_count'] = $query_count;
$params['query_timer'] = $query_timer;
if (variable_get('performance_detail', 0)) {
performance_log_details($params);
}
if (variable_get('performance_summary_db', 0)) {
performance_log_summary_db($params);
}
if (variable_get('performance_summary_apc', 0)) {
if (function_exists('apc_cache_info')) {
performance_log_summary_apc($params);
}
}
}
function performance_log_summary_apc($params = array()) {
$key = PERFORMANCE_KEY . $params['path'];
if ($data = apc_fetch($key)) {
$data = array(
'path' => $data['path'],
'last_access' => time(),
'bytes_max' => max($params['mem'], $data['bytes_max']),
'bytes_avg' => ($data['bytes_avg'] + $params['mem']) / 2,
'millisecs_max' => max($params['timer'], $data['millisecs_max']),
'millisecs_avg' => ($data['millisecs_avg'] + $params['timer']) / 2,
'query_timer_max' => max($params['query_timer'], $data['query_timer_max']),
'query_timer_avg' => ($data['query_timer_avg'] + $params['query_timer']) / 2,
'query_count_max' => max($params['query_count'], $data['query_count_max']),
'query_count_avg' => ($data['query_count_avg'] + $params['query_count']) / 2,
'num_accesses' => $data['num_accesses'] + 1,
);
}
else {
$data = array(
'path' => $params['path'],
'bytes_max' => $params['mem'],
'bytes_avg' => $params['mem'],
'millisecs_max' => $params['timer'],
'millisecs_avg' => $params['timer'],
'query_timer_max' => $params['query_timer'],
'query_timer_avg' => $params['query_timer'],
'query_count_max' => $params['query_count'],
'query_count_avg' => $params['query_count'],
'num_accesses' => 1,
'last_access' => time(),
);
}
apc_store($key, $data);
}
function performance_log_summary_db($params = array()) {
$result = db_query("SELECT * FROM {performance_summary} WHERE path = '%s'", $params['path']);
if (db_num_rows($result)) {
$row = db_fetch_object($result);
db_query("UPDATE {performance_summary} \n SET last_access = %d,\n num_accesses = num_accesses + 1,\n bytes_max = %d,\n bytes_avg = %d,\n millisecs_max = %d,\n millisecs_avg = %d,\n query_timer_max = %d,\n query_timer_avg = %d,\n query_count_max = %d,\n query_count_avg = %d\n WHERE path = '%s'", time(), max($params['mem'], $row->bytes_max), ($row->bytes_avg + $params['mem']) / 2, max($params['timer'], $row->millisecs_max), ($row->millisecs_avg + $params['timer']) / 2, max($params['query_timer'], $row->query_timer_max), ($row->query_timer_avg + $params['query_timer']) / 2, max($params['query_count'], $row->query_count_max), ($row->query_count_avg + $params['query_count']) / 2, $params['path']);
}
else {
db_query("INSERT INTO {performance_summary}\n (path, last_access, num_accesses,\n bytes_max, bytes_avg, millisecs_max, millisecs_avg,\n query_count_max, query_count_avg, query_timer_max, query_timer_avg)\n VALUES \n ('%s', %d, %d, %d, %d, %d, %d, %d, %d, %d, %d)", $params['path'], time(), 1, $params['mem'], $params['mem'], $params['timer'], $params['timer'], $params['query_count'], $params['query_count'], $params['query_timer'], $params['query_timer']);
}
}
function performance_log_details($params = array()) {
global $user;
$anon = $user->uid ? FALSE : TRUE;
db_query("INSERT INTO {performance_detail} (path, anon, bytes, millisecs, timestamp, query_timer, query_count) VALUES ('%s', %d, %d, %d, %d, %d, %d)", $params['path'], $anon, $params['mem'], $params['timer'], time(), $params['query_timer'], $params['query_count']);
}
function performance_apc_list_all() {
$key_list = array();
$list = apc_cache_info('user');
foreach ($list['cache_list'] as $cache_id => $cache_data) {
$regex = '/^' . PERFORMANCE_KEY . '/';
if (preg_match($regex, $cache_data['info'])) {
$key_list[] = $cache_data['info'];
}
}
return $key_list;
}
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/settings/performance_logging'),
));
}
$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('Max Memory (MB)'),
'field' => 'bytes_max',
),
array(
'data' => t('Avg Memory (MB)'),
'field' => 'bytes_avg',
),
array(
'data' => t('Milliseconds (Max)'),
'field' => 'millisecs_max',
),
array(
'data' => t('Milliseconds (Avg)'),
'field' => 'millisecs_avg',
),
array(
'data' => t('Query Millisecs (Max)'),
'field' => 'query_timer_max',
),
array(
'data' => t('Query Millisecs (Avg)'),
'field' => 'query_timer_avg',
),
array(
'data' => t('Query Count (Max)'),
'field' => 'query_count_max',
),
array(
'data' => t('Query Count (Avg)'),
'field' => 'query_count_avg',
),
);
$total_rows = $shown = $last_max = $total_bytes = $total_millisecs = $total_accesses = 0;
$last_min = time();
$threshold = variable_get('performance_threshold_accesses', 0);
if (variable_get('performance_summary_apc', 0) && function_exists('apc_cache_info')) {
foreach (performance_apc_list_all() as $key) {
$data_list[] = apc_fetch($key);
}
}
else {
$sql = "SELECT * FROM {performance_summary}";
$tablesort = tablesort_sql($header);
$result = pager_query($sql . $tablesort, 50);
while ($row = db_fetch_array($result)) {
$data_list[] = $row;
}
}
foreach ($data_list as $data) {
$total_rows++;
$last_max = max($last_max, $data['last_access']);
$last_min = min($last_min, $data['last_access']);
$total_bytes += $data['bytes_avg'];
$total_millisecs += $data['millisecs_avg'];
$total_accesses += $data['num_accesses'];
if ($data['num_accesses'] > $threshold) {
$shown++;
$rows[] = array(
'data' => array(
check_plain($data['path']),
format_date($data['last_access'], 'small'),
$data['num_accesses'],
number_format($data['bytes_max'] / 1024 / 1024, 2),
number_format($data['bytes_avg'] / 1024 / 1024, 2),
number_format($data['millisecs_max'], 1),
number_format($data['millisecs_avg'], 1),
number_format($data['query_timer_max'], 1),
number_format($data['query_timer_avg'], 1),
$data['query_count_max'],
$data['query_count_avg'],
),
);
}
}
if (!$rows) {
$rows[] = array(
array(
'data' => t('No statistics available yet.'),
'colspan' => count($header),
),
);
}
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' => $total_rows,
)) . '<br/>';
}
if ($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;
}
function performance_view_details() {
if (!variable_get('performance_detail', 0)) {
return t('Detail performance log is not enabled. Go to the <a href="@link">settings page</a> to enable it.', array(
'@link' => url('admin/settings/performance_logging'),
));
}
$header = array(
array(
'data' => t('#'),
'field' => 'pid',
'sort' => 'desc',
),
array(
'data' => t('Date'),
'field' => 'timestamp',
),
array(
'data' => t('Path'),
'field' => 'path',
),
array(
'data' => t('Memory (MB)'),
'field' => 'bytes',
),
array(
'data' => t('Milliseconds (Total)'),
'field' => 'millisecs',
),
array(
'data' => t('Anonymous?'),
'field' => 'anon',
),
array(
'data' => t('# Queries'),
'field' => 'query_count',
),
array(
'data' => t('Query Milliseconds'),
'field' => 'query_timer',
),
);
$sql = "SELECT * FROM {performance_detail}";
$tablesort = tablesort_sql($header);
$result = pager_query($sql . $tablesort, 50);
while ($data = db_fetch_array($result)) {
$rows[] = array(
'data' => array(
$data['pid'],
format_date($data['timestamp'], 'small'),
check_plain($data['path']),
number_format($data['bytes'] / 1024 / 1024, 2),
$data['millisecs'],
$data['anon'] ? t('Yes') : t('No'),
$data['query_count'],
$data['query_timer'],
),
);
}
if (!$rows) {
$rows[] = array(
array(
'data' => t('No log messages available.'),
'colspan' => count($header),
),
);
}
$output .= theme('table', $header, $rows);
$output .= theme('pager', NULL, 50, 0);
return $output;
}
function performance_cron() {
$timestamp = time() - 24 * 60 * 60;
performance_cron_db_prune($timestamp);
performance_cron_apc_prune($timestamp);
}
function performance_cron_db_prune($timestamp = 0) {
db_query("DELETE FROM {performance_summary} WHERE last_access <= %d", $timestamp);
}
function performance_cron_apc_prune($timestamp = 0) {
if (!function_exists('apc_cache_info')) {
return;
}
$list = performance_apc_list_all();
if (!count($list)) {
return;
}
foreach ($list as $key) {
if ($data = apc_fetch($key)) {
if ($data['last_access'] <= $timestamp) {
apc_delete($key);
}
}
}
}
function performance_clear_apc_confirm() {
$form['confirm'] = array(
'#value' => t('Confirm APC clear'),
);
return confirm_form($form, t('Are you sure you want to clear the APC statistics for this site?'), 'admin/settings/performance_logging', t('This will clear all the collected performance statistics stored in APC. This action cannot be undone.'), t('Clear'), t('Cancel'));
}
function performance_clear_apc_confirm_submit($form_id, &$form) {
if (!function_exists('apc_cache_info')) {
drupal_set_message(t('APC is not enabled. Nothing to do ...'));
drupal_goto('admin/settings/performance');
return;
}
$list = performance_apc_list_all();
if (!count($list)) {
return;
}
foreach ($list as $key) {
if ($data = apc_fetch($key)) {
apc_delete($key);
}
}
drupal_set_message(t('Performance statistics collected in APC has been cleared.'));
drupal_goto('admin/settings/performance');
}
function performance_nagios_info() {
return array(
'name' => 'Performance logging',
'id' => 'PERF',
);
}
function performance_nagios() {
$info = performance_nagios_info();
$id = $info['id'];
$sum = array();
$sum[] = variable_get('performance_summary_db', 0);
$sum[] = variable_get('performance_summary_apc', 0);
$go = array_sum($sum);
if (!$go) {
return array(
$id => array(
'status' => NAGIOS_STATUS_UNKNOWN,
'type' => 'perf',
'text' => t('Performance logging is not enabled'),
),
);
}
$total_rows = $total_bytes = $total_millisecs = $total_accesses = $total_query_time = $total_query_count = 0;
if (variable_get('performance_summary_apc', 0) && function_exists('apc_cache_info')) {
foreach (performance_apc_list_all() as $key) {
$data_list[] = apc_fetch($key);
}
}
else {
$result = db_query("SELECT * FROM {performance_summary} WHERE last_access >= %d", time() - 15 * 60);
while ($row = db_fetch_array($result)) {
$data_list[] = $row;
}
}
foreach ($data_list as $data) {
$total_rows++;
$total_bytes += $data['bytes_avg'];
$total_millisecs += $data['millisecs_avg'];
$total_accesses += $data['num_accesses'];
$total_query_time += $data['query_timer_avg'];
$total_query_count += $data['query_count_avg'];
}
if ($total_rows > 0) {
$ms_avg = number_format($total_millisecs / $total_rows, 1, '.', '');
$ms_query = number_format($total_query_time / $total_rows, 1, '.', '');
$query_count = number_format($total_query_count / $total_rows, 2, '.', '');
$mb_avg = number_format($total_bytes / $total_rows / 1024 / 1024, 1);
}
else {
$mb_avg = '';
$ms_avg = '';
$ms_query = '';
$query_count = '';
}
$status = NAGIOS_STATUS_OK;
return array(
'ACC' => array(
'status' => $status,
'type' => 'perf',
'text' => $total_accesses,
),
'MS' => array(
'status' => $status,
'type' => 'perf',
'text' => $ms_avg,
),
'MMB' => array(
'status' => $status,
'type' => 'perf',
'text' => $mb_avg,
),
'QRC' => array(
'status' => $status,
'type' => 'perf',
'text' => $query_count,
),
'QRT' => array(
'status' => $status,
'type' => 'perf',
'text' => $ms_query,
),
);
}
