Apache 掛了:Invalid argument: couldn't grab the accept mutex

如題，啟動一段時間後，進程數減少，最後剩10個左右，並報錯:

[emerg] (22)Invalid argument: couldn't grab the accept mutex

以前貌似也沒改過什麼，沒有出過問題。難道是最近訪問量大了造成的（httpd 進程數最高 800左右）？

StackOverflow 上有類似問題，另百度找到一些文章，主要有兩個方法:

1. MaxRequestsPerChild 參數設定問題;

2. 添加一行 AcceptMutex posixsem

尚未嘗試，先來提問，等嘗試完了看看能不能解決。
看看有沒有遇到過這個問題的人。

參考:

1. Sf搜尋結果

2. apache的MaxRequestsPerChild指令設定不合理導致apache崩潰

3. 求助！apache 不停的掛

4. Invalid argument: couldn't grab the accept mutex with apache

今天又出現這個問題了。。。50天后出現第二次。。。

[Wed Dec 09 10:12:33 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:35 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:35 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:35 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:35 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:36 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:37 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:39 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:41 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:56 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:13:04 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:14:58 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex

回複內容：

如題，啟動一段時間後，進程數減少，最後剩10個左右，並報錯:

[emerg] (22)Invalid argument: couldn't grab the accept mutex

以前貌似也沒改過什麼，沒有出過問題。難道是最近訪問量大了造成的（httpd 進程數最高 800左右）？

StackOverflow 上有類似問題，另百度找到一些文章，主要有兩個方法:

1. MaxRequestsPerChild 參數設定問題;

2. 添加一行 AcceptMutex posixsem

尚未嘗試，先來提問，等嘗試完了看看能不能解決。
看看有沒有遇到過這個問題的人。

參考:

1. Sf搜尋結果

2. apache的MaxRequestsPerChild指令設定不合理導致apache崩潰

3. 求助！apache 不停的掛

4. Invalid argument: couldn't grab the accept mutex with apache

今天又出現這個問題了。。。50天后出現第二次。。。

[Wed Dec 09 10:12:33 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:35 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:35 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:35 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:35 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:36 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:37 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:39 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:41 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:12:56 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:13:04 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex[Wed Dec 09 10:14:58 2015] [emerg] (22)Invalid argument: couldn't grab the accept mutex

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