apache2进程停留在发送回复中-W [英] apache2 processes stuck in sending reply - W

问题描述

我正在具有7.5GB RAM的服务器上托管多个站点.使用apache2 mpm_prefork.

I am hosting multiple sites on a server with 7.5gb RAM. Using apache2 mpm_prefork.

以下命令给我的生产价值是200-300

Following command gives me a value of 200-300 in production

ps aux|grep -c 'apache2' 

使用top我看到只有几百兆的RAM可用.错误日志显示没有异常. apache2这么多进程正常吗?

Using top i see only some hundred megabytes of RAM is free. Error log show nothing unusual. Is this much apache2 process normal?

MaxRequestWorkers设置为512

更新: 现在我正在使用mod-status检查apache活动. 我有这样的行

Update: Now i am using mod-status to check apache activity. I have a row like this

Srv PID    Acc     M CPU   SS    Req Conn Child Slot  Client VHost Request 
0-0 29342  2/2/70  W 0.07  5702  0    3.0  0.00  1.67  XXX    XXX   /someurl

如果我在一段时间后再次检查PID不变，并且我得到的SS值比前一次更大.此请求的M处于"W"发送答复状态.那么这意味着apache2进程已针对该请求锁定了吗?

If i check again after sometime PID not changes and i get SS with greater value that previous time. M of this request is in 'W` sending reply state. So that means apache2 process locked in for that request?

推荐答案

在我的VPS和根服务器上，情况部分相似. AFAIK操作系统会尝试将大多数处理能力/RAM分配给正在运行的进程，并在需要时为其他进程释放资源.

On my VPS and root servers, the situation is partially similar. AFAIK the os tries to distribute most of the processing power/RAM to running processes and frees the resources for other processes as the need arises.

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