問題描述

由于我的問題越來越長，我決定重新編寫整個問題以使其更好更短.

Since my question is getting longer and longer, I decide to re-write the whole question to make it better and shorter.

我在具有 8GB 內(nèi)存的專用服務(wù)器上運行我的網(wǎng)站.我完全知道我需要提高 php.ini 設(shè)置的內(nèi)存限制.我已將其從 128M 設(shè)置為 256M 并設(shè)置為 -1.問題仍然是持久性.

I run my website on dedicated server with 8GB memory. I am fully aware that I need to raise the memory limit on php.ini setting. I have set it from 128M to 256M and to -1. Still the problem is persistence.

致命錯誤:內(nèi)存不足(已分配 786432)(嘗試分配 24576字節(jié))在 D:wwwfootballviewsmain.php 中的第 81 行

Fatal error: Out of memory (allocated 786432) (tried to allocate 24576 bytes) in D:wwwfootballviewsmain.php on line 81

內(nèi)存不足是沒有意義的，因為它說只分配了 786432 個字節(jié)，而它需要更多的 24576 個字節(jié).

The out of memory does not make sense because it said only 786432 bytes is allocated and it needed 24576 bytes more.

786432 字節(jié)僅為 768 KB，相當小.

786432 bytes is only 768 kilobytes and is fairly small.

• 錯誤發(fā)生在非常隨機的行上.它并不總是在第 81 行出錯.
• 在高峰時間，Apache 只占用大約 500MB 的內(nèi)存.我還有 6GB 可用空間.
• 沒有無限循環(huán).
• 腳本占用 1,042,424 個字節(jié).從 echo memory_get_peak_usage();
獲取這個數(shù)字
• 來自 MySQL 的結(jié)果集很小(最多 12 行，純文本，沒有 blob 數(shù)據(jù))
• (重要)如果我每兩天重啟一次 Apache，錯誤就會消失.這通常發(fā)生在 Apache 運行超過 2 天時.
• 我已經(jīng)包含了腳本的分析，您可以在此處獲取它.
• 此專用服務(wù)器僅用于運行一個網(wǎng)站.該網(wǎng)站是一個高流量網(wǎng)站，平均每分鐘有 1,000 名訪問者.在高峰時段，將有 1,700 至 2,000 名訪客同時訪問.

• The error occurs on a very random line. It does not always error on line number 81.
• At peak time, Apache only takes around 500mb of memory. I still have 6GB to spare.
• There is no infinite loop.
• The script takes 1,042,424 bytes. Getting this number from echo memory_get_peak_usage();
• The resultset from MySQL is small (at most 12 of rows, purely text, no blob data)
• (Important) If I restart Apache once every two days, the error is gone. It usually happens when Apache is running more than 2 days.
• I have included the profiling the script and you can get it here.
• This dedicated server is purely used to run only one website. This website is a high traffic website with average of 1,000 visitors every minute. At peak time, there will be 1,700 to 2,000 visitors accessing at the same time.

操作系統(tǒng):Windows 2008 R2 64 位
CPU:英特爾酷睿 i5 - 4 核
內(nèi)存:8 GB
Apache 2.2
PHP 5.3.1
存儲:2 x 1 TB 硬盤
帶寬:每月 10 TB

OS: Windows 2008 R2 64-Bit
CPU: Intel Core i5 - 4 cores
RAM: 8 GB
Apache 2.2
PHP 5.3.1
Storage: 2 x 1 TB hard drives
Bandwidth: 10 TB per month

解決方案

我終于調(diào)整并解決了問題，我想在這里分享我所做的改進:

Solution

I have finally tuned up and fixed the problem and I would like to share it here what I have done to improve:

1. favicon.ico 丟失了，這會影響我的路由引擎.雖然我的路由引擎非常小，但是通過包含 favicon.ico，它可以通過不運行我的路由引擎來幫助減少內(nèi)存使用.我網(wǎng)站的大部分內(nèi)容都有它，但我忘了把它放在這個新部分.

2. Limit MaxRequestPerChild 有幫助.在我的另一個專用服務(wù)器中，我的 MaxRequestPerChild 受到限制.對于這個服務(wù)器，我設(shè)置為0.我一直認為每個腳本都是隔離的.假設(shè)我的腳本需要 800kb 才能運行.完成后，Apache 或 PHP 應該釋放 800kb 內(nèi)存.似乎它不能以這種方式工作.受限 MaxRequestPerChild 確實有助于通過在受限 MaxRequestPerChild 和舊進程即將死亡后創(chuàng)建新進程來防止內(nèi)存泄漏.這是我的新設(shè)置.

1. favicon.ico was missing which mess up with my route engine. Although my route engine is very small, but by including favicon.ico, it helps reduce memory usage by not running my route engine. Most of part of my website has it and I forgot to put it for this new section.

2. Limit MaxRequestPerChild helps. In my other dedicated server, I have my MaxRequestPerChild limited. For this server, I set it to 0. I always thought that each script is isolated. Lets say if my script takes 800kb to run. Upon its completion, Apache or PHP should free 800kb memory. It seem like it doesn't work this way. Limited MaxRequestPerChild does help to prevent memory leak by creating new process after limited MaxRequestPerChild and the old process is dying. This is my new setting.

ThreadsPerChild      1500
MaxRequestsPerChild  10000