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Capture cache hit / miss ratio

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This commit is contained in:
Daniel Bachhuber 2016-08-26 09:00:11 -07:00
parent 664364aac7
commit 707f2fb688
2 changed files with 25 additions and 2 deletions
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26
inc/class-logger.php
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@ -9,6 +9,11 @@ class Logger {
'count' => 0,
'time' => 0,
);
public $cache = array(
'ratio' => 0,
'hits' => 0,
'misses' => 0,
);
public $hooks = array(
'count' => 0,
'time' => 0,
@ -20,6 +25,8 @@ class Logger {
private $start_time = null;
private $query_offset = null;
private $cache_hit_offset = null;
private $cache_miss_offset = null;
private $hook_start_time = null;
private $hook_depth = 0;
private $request_start_time = null;
@ -34,19 +41,21 @@ class Logger {
* Start this logger
*/
public function start() {
global $wpdb;
global $wpdb, $wp_object_cache;
$this->start_time = microtime( true );
$this->query_offset = ! empty( $wpdb->queries ) ? count( $wpdb->queries ) : 0;
if ( false === ( $key = array_search( $this, self::$active_loggers ) ) ) {
self::$active_loggers[] = $this;
}
$this->cache_hit_offset = ! empty( $wp_object_cache->cache_hits ) ? $wp_object_cache->cache_hits : 0;
$this->cache_miss_offset = ! empty( $wp_object_cache->cache_misses ) ? $wp_object_cache->cache_misses : 0;
}
/**
* Stop this logger
*/
public function stop() {
global $wpdb;
global $wpdb, $wp_object_cache;
if ( ! is_null( $this->start_time ) ) {
$this->execution_time += microtime( true ) - $this->start_time;
@ -58,8 +67,21 @@ class Logger {
}
}
if ( ! is_null( $this->cache_hit_offset ) && ! is_null( $this->cache_miss_offset ) ) {
$cache_hits = ! empty( $wp_object_cache->cache_hits ) ? $wp_object_cache->cache_hits : 0;
$cache_misses = ! empty( $wp_object_cache->cache_misses ) ? $wp_object_cache->cache_misses : 0;
$cache_total = $cache_hits + $cache_misses;
$this->cache['hits'] = $cache_hits - $this->cache_hit_offset;
$this->cache['misses'] = $cache_misses - $this->cache_miss_offset;
if ( $cache_total ) {
$this->cache['ratio'] = $cache_hits / $cache_total;
}
}
$this->start_time = null;
$this->query_offset = null;
$this->cache_hit_offset = null;
$this->cache_miss_offset = null;
if ( false !== ( $key = array_search( $this, self::$active_loggers ) ) ) {
unset( self::$active_loggers[ $key ] );
}