用ANK，apache经常挂掉，有以下错误信息，怎么解决啊

[Fri Sep 07 12:15:50.445833 2018] [mpm_winnt:notice] [pid 6420:tid 316] AH00358: Child: Process exiting because it reached MaxConnectionsPerChild. Signaling the parent to restart a new child process.
[Fri Sep 07 12:15:50.464386 2018] [mpm_winnt:notice] [pid 1544:tid 388] AH00424: Parent: Received restart signal -- Restarting the server.
[Fri Sep 07 12:15:51.351048 2018] [:notice] [pid 1544:tid 388] mod_bw : Memory Allocated 0 bytes (each conf takes 48 bytes)
[Fri Sep 07 12:15:51.352025 2018] [:notice] [pid 1544:tid 388] mod_bw : Version 0.92 - Initialized [0 Confs]
[Fri Sep 07 12:15:51.352025 2018] [:notice] [pid 1544:tid 388] mod_bw : Supported resolution for Timers [ Min: 1 Max: 1000000 ]
[Fri Sep 07 12:15:51.352025 2018] [:notice] [pid 1544:tid 388] mod_bw : Enabling High resolution timers [ 1 ms ]
[Fri Sep 07 12:15:51.377414 2018] [mpm_winnt:notice] [pid 1544:tid 388] AH00455: Apache/2.4.33 (Win64) mod_fcgid/2.3.9 mod_jk/1.2.43 OpenSSL/1.1.0h configured -- resuming normal operations
[Fri Sep 07 12:15:51.377414 2018] [mpm_winnt:notice] [pid 1544:tid 388] AH00456: Apache Lounge VC15 Server built: Mar 28 2018 12:38:12
[Fri Sep 07 12:15:51.377414 2018] [core:notice] [pid 1544:tid 388] AH00094: Command line: 'D:\\UPUPW_ANK_W64\\WebServer\\Apache\\bin\\httpd.exe -d D:/UPUPW_ANK_W64/WebServer/Apache'
[Fri Sep 07 12:15:51.403779 2018] [mpm_winnt:notice] [pid 1544:tid 388] AH00418: Parent: Created child process 15820
[Fri Sep 07 12:15:52.420316 2018] [:notice] [pid 15820:tid 316] mod_bw : Memory Allocated 0 bytes (each conf takes 48 bytes)
[Fri Sep 07 12:15:52.420316 2018] [:notice] [pid 15820:tid 316] mod_bw : Version 0.92 - Initialized [0 Confs]
[Fri Sep 07 12:15:52.420316 2018] [:notice] [pid 15820:tid 316] mod_bw : Supported resolution for Timers [ Min: 1 Max: 1000000 ]
[Fri Sep 07 12:15:52.420316 2018] [:notice] [pid 15820:tid 316] mod_bw : Enabling High resolution timers [ 1 ms ]
[Fri Sep 07 12:15:52.455470 2018] [mpm_winnt:notice] [pid 15820:tid 316] AH00354: Child: Starting 1024 worker threads.
[Fri Sep 07 12:15:52.474023 2018] [mpm_winnt:notice] [pid 6420:tid 316] AH00364: Child: All worker threads have exited.

但是实际实际上可能没有重启好，只有我手动点了“重启APACHE”后，网站才正常访问了，请问这个问题怎么解决？

其他网站正常，就某个站有问题，一重启APACHE就正常了，请问如何提高缓存配置，我现在已经把默认配置都翻倍了

图片：QQ图片20180910174231.png

或者看看这个配置有没有问题，服务器是阿里云ECS,   4 vCPU 8 GB (I/O优化)