Tune PHP for better performance

base/PHP5Daemon.php

@@ -83,9 +83,14 @@ protected function getArguments(): Vector<string> {
         PerfSettings::BackendPort(),
         $config
       );
+      $config = str_replace(
+        "__BACKLOG__",
+        (string) $this->options->phpFCGIBacklog,
+        $config
+      );
       $config = str_replace(
         "__CHILDREN__",
-        $this->options->serverThreads,
+        (string) $this->options->phpFCGIChildren,
         $config
       );
       $config = str_replace(
@@ -163,6 +168,7 @@ protected function getEnvironmentVariables(): Map<string, string> {
     return Map {
       'OSS_PERF_TARGET' => (string) $this->target,
       'PHP_FCGI_CHILDREN' => (string) $this->options->phpFCGIChildren,
+      'PHP_FCGI_BACKLOG' => (string) $this->options->phpFCGIBacklog,
       'PHP_FCGI_MAX_REQUESTS' => '0',
     };
   }

base/PerfOptions.php

@@ -34,6 +34,7 @@ final class PerfOptions {
   public array $phpExtraArguments;
 
   public int $phpFCGIChildren;
+  public int $phpFCGIBacklog;
 
   public string $siege;
   public string $nginx;
@@ -117,6 +118,7 @@ final class PerfOptions {
   public ?string $scriptAfterWarmup;
   public ?string $scriptAfterBenchmark;
   public string $serverThreads = '100';
+  public string $serverBacklog = '256';
   public string $clientThreads = '200';
 
   public bool $notBenchmarking = false;
@@ -166,6 +168,7 @@ public function __construct(Vector<string> $argv) {
       'hhvm-extra-arguments:',
       'php-extra-arguments:',
       'php-fcgi-children:',
+      'php-fcgi-backlog:',
       'no-time-limit',
       'fetch-resources',
       'skip-sanity-check',
@@ -314,7 +317,12 @@ public function __construct(Vector<string> $argv) {
     $this->hhvmExtraArguments = $this->getArray('hhvm-extra-arguments');
     $this->phpExtraArguments = $this->getArray('php-extra-arguments');
 
-    $this->phpFCGIChildren = $this->getInt('php-fcgi-children', 100);
+    $output = [];
+    exec('nproc', $output);
+    $numProcessors = (int)($output[0]);
+
+    $this->phpFCGIChildren = $this->getInt('php-fcgi-children', $numProcessors * 2);
+    $this->phpFCGIBacklog = $this->getInt('php-fcgi-backlog', 256);
     $this->delayNginxStartup = $this->getFloat('delay-nginx-startup', 0.1);
     $this->delayPhpStartup = $this->getFloat('delay-php-startup', 1.0);
     $this->delayProcessLaunch = $this->getFloat('delay-process-launch', 0.0);

conf/php-fpm.conf.in

@@ -20,6 +20,8 @@ listen = 127.0.0.1:__FASTCGI_PORT__
 ; List of addresses (IPv4/IPv6) of FastCGI clients which are allowed to connect.
 listen.allowed_clients = 127.0.0.1
 
+listen.backlog = __BACKLOG__
+
 ;   static  - a fixed number (pm.max_children) of child processes;
 pm = static
 

conf/php.ini

@@ -41,3 +41,9 @@ opcache.max_accelerated_files=100000
 opcache.max_wasted_percentage=5
 opcache.memory_consumption=1024
 opcache.consistency_checks=0
+
+zend.assertions=-1
+zend.detect_unicode=0
+mysqlnd.collect_statistics=0
+opcache.huge_code_pages=1
+opcache.optimization_level=-1