更改了 mpm-worker 2.4 配置但没有效果答案

【问题标题】：Changed mpm-worker 2.4 config but with no effect更改了 mpm-worker 2.4 配置但没有效果
【发布时间】：2017-05-09 05:13:00
【问题描述】：

我已将默认配置更改为：

<IfModule worker.c>
ServerLimit 20
StartServers            4
MaxRequestWorkers               600
MinSpareThreads         25
MaxSpareThreads         75
ThreadsPerChild         30
MaxConnectionsPerChild  0
</IfModule>

而在高峰期，使用服务器状态，当它达到 400 个会话时，它似乎仍然没有创建新的工作人员并保持在 400：

BusyWorkers: 400
IdleWorkers: 0
Scoreboard: KKKKCKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKRKCKKKKKKCKKRKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKRKKKKKCKKKCKKKKKRKKKCKKKKKKCKKKKKKKKKKKKRCKKCKKKCKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKCKKKRKKKKKKKRKKKKKKKKKKKKKCKCKKKKKCKKKCKCKKRCRKKKKKKKKKKKKRKKKKKKKKKKKKKKCKKKKCKKKKKRKCCKKKKKKKKKKKKKKCKKKKKKKRKKKKKKKKKKCKKKCKKRKKCRKKRKKKKKKKKKKKKKCKKKKRKKKKRKKKKCKKKKKRKKKKKKKKKKKKKKKKKKKKRKKKKKKKWKKKKKKKKKKKCKKKK

如果我将用户更改为 apache 并发出 ulimit -u 我得到 1024

有什么想法吗？

【问题讨论】：

标签： apache httpd.conf apache2.4

【解决方案1】：

您需要完全停止/启动以使 mpm 更改生效，重新启动或优雅仍会为您提供以前的设置。

【讨论】：

【解决方案2】：

我终于弄明白了为什么 Apache 不能创建超过 400 个工人。这是因为配置文件格式。在我们的 httpd.conf 文件中，worker 和 prefork 模块的设置写在“LoadModule”部分之前。似乎 apache 不喜欢这种格式，所以它忽略了我们的工作模式值并回退到默认值。修复很简单，我们必须从上面的“LoadModules”部分删除worker和prefork模块的设置，并将它们放在这个部分之后。

这些值对于 1000 个同时连接是最佳的：

# prefork MPM
# StartServers: number of server processes to start
# MinSpareServers: minimum number of server processes which are kept spare
# MaxSpareServers: maximum number of server processes which are kept spare
# ServerLimit: maximum value for MaxClients for the lifetime of the server
# MaxClients: maximum number of server processes allowed to start
# MaxRequestsPerChild: maximum number of requests a server process serves
<IfModule prefork.c>
    ServerLimit                                         40
    StartServers                                       5
    MinSpareThreads                           25
    MaxSpareServers                           75
    MaxRequestWorkers                   1000
    ThreadsPerChild                             25
    MaxConnectionsPerChild     0
</IfModule>
#
# worker MPM
# StartServers: initial number of -erver processes to start
# MaxClients: maximum number of simultaneous client connections
# MinSpareThreads: minimum number of worker threads which are kept spare
# MaxSpareThreads: maximum number of worker threads which are kept spare
# ThreadsPerChild: constant number of worker threads in each server process
# MaxRequestsPerChild: maximum number of requests a server process serves
<IfModule mpm_worker_module>
    ServerLimit                                         40
    StartServers                                       5
    MinSpareThreads                           25
    MaxSpareThreads                          75
    MaxRequestWorkers           1000
    ThreadsPerChild                             25
    MaxConnectionsPerChild     0
</IfModule>

然后停止/启动 apache 进程。

【讨论】：