Comments on: To stat() Or Not To stat()? http://www.brandonsavage.net/to-stat-or-not-to-stat/ The personal blog of Brandon Savage. Contains entries of a personal and professional nature focusing on PHP, Apple, LAMP, MySQL and Washington, DC. Thu, 29 Jul 2010 11:09:38 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Oscar http://www.brandonsavage.net/to-stat-or-not-to-stat/#comment-794 Oscar Fri, 31 Jul 2009 17:49:34 +0000 http://www.brandonsavage.net/?p=503#comment-794 I've noticed that APC and other opcode caches can help with memory, since retrieving the opcodes from the cache require less memory than parsing the PHP file each time. The first time a PHP file is parsed, the scripts memory consumption will be high, but subsequent calls are smaller. Depending on how memory starved your server is, this can help some as it keeps the memory usage for apache lower, especially if you use prefork. Do you have any benchmarks for how much turning stat() off can help? I’ve noticed that APC and other opcode caches can help with memory, since retrieving the opcodes from the cache require less memory than parsing the PHP file each time. The first time a PHP file is parsed, the scripts memory consumption will be high, but subsequent calls are smaller.

Depending on how memory starved your server is, this can help some as it keeps the memory usage for apache lower, especially if you use prefork.

Do you have any benchmarks for how much turning stat() off can help?

]]> By: Brandon Savage http://www.brandonsavage.net/to-stat-or-not-to-stat/#comment-783 Brandon Savage Fri, 31 Jul 2009 00:12:35 +0000 http://www.brandonsavage.net/?p=503#comment-783 That's one option, though I don't know that I'd care that much. I can just run "apachectl graceful" every time I update the files, or automate that process in some way when rsync runs. That’s one option, though I don’t know that I’d care that much. I can just run “apachectl graceful” every time I update the files, or automate that process in some way when rsync runs.

]]> By: Brent http://www.brandonsavage.net/to-stat-or-not-to-stat/#comment-782 Brent Thu, 30 Jul 2009 22:47:45 +0000 http://www.brandonsavage.net/?p=503#comment-782 Here is a crazy idea, you could use incron ( http://inotify.aiken.cz/?section=incron&page=about&lang=en ) to monitor files and call apc_cache_clear() when a file is changed. Here is a crazy idea, you could use incron ( http://inotify.aiken.cz/?section=incron&page=about&lang=en ) to monitor files and call apc_cache_clear() when a file is changed.

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