服務(wù)器用的是阿里云，安裝的是PhpStudy，每過幾小時，就會出現(xiàn)網(wǎng)站無法訪問的情況，服務(wù)器出現(xiàn)這個錯誤。
但PhpStudy并沒有報錯退出，只要然后點擊“關(guān)閉程序”結(jié)束這個窗口，網(wǎng)站就能恢復(fù)訪問。

我嘗試了以下方式，但是都沒能解決問題：

1. 將服務(wù)器內(nèi)存從2GB升級到4GB；
2. 在PhpStudy中將PHP版本切換至7.0.12；
3. 將X:phpStudyPHPTutorialApacheconfextrahttpd-mpm.conf中的ThreadsPerChild值增加至1500

<IfModule mpm_winnt_module>

ThreadsPerChild      1500
MaxRequestsPerChild    3000   

</IfModule>

1. 將X:phpStudyPHPTutorialMySQLmy.ini中的query_cache_size值修改為256M

query_cache_size=256M

1. 分別嘗試將以下3個文件復(fù)制到C:WindowsSystem32：

D:phpStudyPHPTutorialMySQLliblibmysql.dll
D:phpStudyPHPTutorialphpphp-5.2.17libmysql.dll
D:phpStudylibmysql.dll

以上方式都是Google出來的相關(guān)解決方案，但都沒能解決這個問題，依舊是過幾小時就會報錯導(dǎo)致網(wǎng)站無法訪問，求教大家是怎么回事？

錯誤日志（X:phpStudyPHPTutorialApachelogserror.log）相關(guān)信息：
[Sun Apr 15 15:26:37.318002 2018] [mpm_winnt:notice] [pid 21256:tid 516] AH00363: Child: Terminating 149 threads that failed to exit.
[Sun Apr 15 15:26:37.318980 2018] [mpm_winnt:notice] [pid 21256:tid 516] AH00364: Child: All worker threads have exited.
[Sun Apr 15 17:20:57.704416 2018] [mpm_winnt:notice] [pid 20736:tid 508] AH00428: Parent: child process 21256 exited with status 3221225477 -- Restarting.
[Sun Apr 15 17:20:57.966144 2018] [mpm_winnt:notice] [pid 20736:tid 508] AH00455: Apache/2.4.23 (Win32) OpenSSL/1.0.2j PHP/5.4.45 configured -- resuming normal operations
[Sun Apr 15 17:20:57.966144 2018] [mpm_winnt:notice] [pid 20736:tid 508] AH00456: Server built: Jul 1 2016 16:42:20
[Sun Apr 15 17:20:57.967120 2018] [core:notice] [pid 20736:tid 508] AH00094: Command line: 'X:\phpStudy\PHPTutorial\Apache\bin\httpd.exe -d D:/phpStudy/PHPTutorial/Apache'
[Sun Apr 15 17:20:57.971046 2018] [mpm_winnt:notice] [pid 20736:tid 508] AH00418: Parent: Created child process 14368
[Sun Apr 15 17:20:59.030613 2018] [mpm_winnt:notice] [pid 14368:tid 516] AH00354: Child: Starting 150 worker threads.
[Sun Apr 15 17:20:59.047219 2018] [mpm_winnt:error] [pid 14368:tid 3188] AH00326: Server ran out of threads to serve requests. Consider raising the ThreadsPerChild setting

有大量的：
[Fri Apr 20 17:33:06.965644 2018] [fcgid:error] [pid 14892:tid 588] FastCGI process 10700 still did not exit, terminating forcefully

最近一次出錯時的最后兩行錯誤信息：
[Fri Apr 20 18:38:12.859160 2018] [mpm_winnt:notice] [pid 8908:tid 488] AH00363: Child: Terminating 647 threads that failed to exit.
[Fri Apr 20 18:38:12.870901 2018] [mpm_winnt:notice] [pid 8908:tid 488] AH00364: Child: All worker threads have exited.