我的网站有时会超载。我注意到 Apache 进程太多，导致网站冻结。我们的流量不至于导致这种情况。那时我所能做的就是重启服务器。
尝试调试问题时，我从 mod_status 中得到此信息。在某些时候，我看到太多没有 PID 的进程处于“打开插槽但没有当前进程”状态，大约有 75 个：
Srv PID Acc M CPU SS Req Conn Child Slot Client Protocol VHost Request
0-0 - 0/0/18 . 12.08 314 0 0.0 0.00 0.12 ::1 http/1.1 any.com:80 OPTIONS * HTTP/1.0
1-0 - 0/0/16 . 6.63 286 0 0.0 0.00 0.08 ::1 http/1.1 any.com:80 OPTIONS * HTTP/1.0
2-0 20533 0/34/34 _ 45.02 7 0 0.0 0.29 0.29 213.140.194.20 http/1.1 any.com:80 GET /server-status/?refresh=5 HTTP/1.1
3-0 - 0/0/14 . 17.98 320 0 0.0 0.00 0.07 ::1 http/1.1 any.com:80 OPTIONS * HTTP/1.0
4-0 - 0/0/17 . 5.40 307 0 0.0 0.00 0.06 ::1 http/1.1 any.com:80 OPTIONS * HTTP/1.0
5-0 - 0/0/17 . 6.91 306 0 0.0 0.00 0.06 ::1 http/1.1 any.com:80 OPTIONS * HTTP/1.0
6-0 - 0/0/18 . 17.41 319 0 0.0 0.00 0.11 ::1 http/1.1 any.com:80 OPTIONS * HTTP/1.0
7-0 - 0/0/21 . 13.20 283 0 0.0 0.00 0.09 ::1 http/1.1 any.com:80 OPTIONS * HTTP/1.0
8-0 - 0/0/16 . 6.74 281 0 0.0 0.00 0.07 ::1 http/1.1 any.com:80 OPTIONS * HTTP/1.0
9-0 - 0/0/17 . 7.34 308 0 0.0 0.00 0.08 ::1 http/1.1 any.com:80 OPTIONS * HTTP/1.0
10-0 - 0/0/9 . 1.41 296 0 0.0 0.00 0.03 ::1 http/1.1 any.com:80 OPTIONS * HTTP/1.0
11-0 - 0/0/2 . 0.00 316 0 0.0 0.00 0.00 ::1 http/1.1 any.com:80 OPTIONS * HTTP/1.0
12-0 - 0/0/2 . 0.00 318 0 0.0 0.00 0.00 ::1 http/1.1 any.com:80 OPTIONS * HTTP/1.0
13-0 - 0/0/6 . 0.69 274 0 0.0 0.00 0.41 ::1 http/1.1 any.com:80 OPTIONS * HTTP/1.0
14-0 - 0/0/4 . 1.12 292 0 0.0 0.00 0.02 ::1 http/1.1 any.com:80 OPTIONS * HTTP/1.0
这些都意味着什么？它们会造成过载吗？