[Tue Oct 25 16:16:48.848063 2016] [mpm_winnt:notice] [pid 6252:tid 364] AH00455: Apache/2.4.18 (Win32) OpenSSL/1.0.2e PHP/5.3.29 configured -- resuming normal operations
[Tue Oct 25 16:16:48.848063 2016] [mpm_winnt:notice] [pid 6252:tid 364] AH00456: Server built: Dec 9 2015 12:21:09
[Tue Oct 25 16:16:48.848063 2016] [core:notice] [pid 6252:tid 364] AH00094: Command line: 'H:\\phpStudy\\Apache\\bin\\httpd.exe -d H:/phpStudy/Apache'
[Tue Oct 25 16:16:48.894863 2016] [mpm_winnt:notice] [pid 6252:tid 364] AH00418: Parent: Created child process 6072
[Tue Oct 25 16:16:49.955665 2016] [mpm_winnt:notice] [pid 6072:tid 380] AH00354: Child: Starting 150 worker threads.
[Tue Oct 25 16:19:19.856430 2016] [mpm_winnt:crit] [pid 6072:tid 380] AH02538: Child: Parent process exited abruptly. Child process is ending
[Tue Oct 25 16:20:15.440328 2016] [core:warn] [pid 5492:tid 312] AH00098: pid file H:/phpStudy/Apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?
[Tue Oct 25 16:20:15.565128 2016] [mpm_winnt:notice] [pid 5492:tid 312] AH00455: Apache/2.4.18 (Win32) OpenSSL/1.0.2e mod_fcgid/2.3.9 configured -- resuming normal operations
[Tue Oct 25 16:20:15.565128 2016] [mpm_winnt:notice] [pid 5492:tid 312] AH00456: Server built: Dec 9 2015 12:21:09
[Tue Oct 25 16:20:15.565128 2016] [core:notice] [pid 5492:tid 312] AH00094: Command line: 'H:\\phpStudy\\Apache\\bin\\httpd.exe -d H:/phpStudy/Apache'
[Tue Oct 25 16:20:15.580728 2016] [mpm_winnt:notice] [pid 5492:tid 312] AH00418: Parent: Created child process 4104
[Tue Oct 25 16:20:16.407529 2016] [mpm_winnt:notice] [pid 4104:tid 328] AH00354: Child: Starting 150 worker threads.
[Tue Oct 25 16:20:54.409196 2016] [mpm_winnt:crit] [pid 4104:tid 328] AH02538: Child: Parent process exited abruptly. Child process is ending
[Tue Oct 25 16:21:00.618007 2016] [core:warn] [pid 7752:tid 312] AH00098: pid file H:/phpStudy/Apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?
[Tue Oct 25 16:21:00.727207 2016] [mpm_winnt:notice] [pid 7752:tid 312] AH00455: Apache/2.4.18 (Win32) OpenSSL/1.0.2e mod_fcgid/2.3.9 configured -- resuming normal operations
[Tue Oct 25 16:21:00.727207 2016] [mpm_winnt:notice] [pid 7752:tid 312] AH00456: Server built: Dec 9 2015 12:21:09
[Tue Oct 25 16:21:00.727207 2016] [core:notice] [pid 7752:tid 312] AH00094: Command line: 'H:\\phpStudy\\Apache\\bin\\httpd.exe -d H:/phpStudy/Apache'
[Tue Oct 25 16:21:00.758407 2016] [mpm_winnt:notice] [pid 7752:tid 312] AH00418: Parent: Created child process 4692
[Tue Oct 25 16:21:01.616409 2016] [mpm_winnt:notice] [pid 4692:tid 328] AH00354: Child: Starting 150 worker threads.
[Tue Oct 25 16:28:19.334481 2016] [mpm_winnt:crit] [pid 4692:tid 328] AH02538: Child: Parent process exited abruptly. Child process is ending
[Tue Oct 25 16:28:25.740847 2016] [core:warn] [pid 1492:tid 364] AH00098: pid file H:/phpStudy/Apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?
[Tue Oct 25 16:28:25.916857 2016] [mpm_winnt:notice] [pid 1492:tid 364] AH00455: Apache/2.4.18 (Win32) OpenSSL/1.0.2e PHP/5.3.29 configured -- resuming normal operations
[Tue Oct 25 16:28:25.916857 2016] [mpm_winnt:notice] [pid 1492:tid 364] AH00456: Server built: Dec 9 2015 12:21:09
[Tue Oct 25 16:28:25.916857 2016] [core:notice] [pid 1492:tid 364] AH00094: Command line: 'H:\\phpStudy\\Apache\\bin\\httpd.exe -d H:/phpStudy/Apache'
[Tue Oct 25 16:28:25.945859 2016] [mpm_winnt:notice] [pid 1492:tid 364] AH00418: Parent: Created child process 8472
[Tue Oct 25 16:28:26.893913 2016] [mpm_winnt:notice] [pid 8472:tid 380] AH00354: Child: Starting 150 worker threads.
[Tue Oct 25 16:28:32.044208 2016] [mpm_winnt:crit] [pid 8472:tid 380] AH02538: Child: Parent process exited abruptly. Child process is ending
[Tue Oct 25 16:28:38.435573 2016] [core:warn] [pid 6028:tid 356] AH00098: pid file H:/phpStudy/Apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?
[Tue Oct 25 16:28:38.634585 2016] [mpm_winnt:notice] [pid 6028:tid 356] AH00455: Apache/2.4.18 (Win32) OpenSSL/1.0.2e PHP/5.5.30 configured -- resuming normal operations
[Tue Oct 25 16:28:38.634585 2016] [mpm_winnt:notice] [pid 6028:tid 356] AH00456: Server built: Dec 9 2015 12:21:09
[Tue Oct 25 16:28:38.634585 2016] [core:notice] [pid 6028:tid 356] AH00094: Command line: 'H:\\phpStudy\\Apache\\bin\\httpd.exe -d H:/phpStudy/Apache'
[Tue Oct 25 16:28:38.660586 2016] [mpm_winnt:notice] [pid 6028:tid 356] AH00418: Parent: Created child process 4044
[Tue Oct 25 16:28:39.618641 2016] [mpm_winnt:notice] [pid 4044:tid 372] AH00354: Child: Starting 150 worker threads.
[Tue Oct 25 16:29:17.559811 2016] [mpm_winnt:crit] [pid 4044:tid 372] AH02538: Child: Parent process exited abruptly. Child process is ending
[Tue Oct 25 16:29:20.320969 2016] [core:warn] [pid 744:tid 360] AH00098: pid file H:/phpStudy/Apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?
[Tue Oct 25 16:29:20.494979 2016] [mpm_winnt:notice] [pid 744:tid 360] AH00455: Apache/2.4.18 (Win32) OpenSSL/1.0.2e mod_fcgid/2.3.9 PHP/5.5.30 configured -- resuming normal operations
[Tue Oct 25 16:29:20.494979 2016] [mpm_winnt:notice] [pid 744:tid 360] AH00456: Server built: Dec 9 2015 12:21:09
[Tue Oct 25 16:29:20.494979 2016] [core:notice] [pid 744:tid 360] AH00094: Command line: 'H:\\phpStudy\\Apache\\bin\\httpd.exe -d H:/phpStudy/Apache'
[Tue Oct 25 16:29:20.520980 2016] [mpm_winnt:notice] [pid 744:tid 360] AH00418: Parent: Created child process 2892
[Tue Oct 25 16:29:21.496036 2016] [mpm_winnt:notice] [pid 2892:tid 376] AH00354: Child: Starting 150 worker threads.
[Tue Oct 25 16:30:03.043413 2016] [mpm_winnt:crit] [pid 2892:tid 376] AH02538: Child: Parent process exited abruptly. Child process is ending
[Tue Oct 25 16:30:09.374775 2016] [core:warn] [pid 2156:tid 312] AH00098: pid file H:/phpStudy/Apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?
[Tue Oct 25 16:30:09.498782 2016] [mpm_winnt:notice] [pid 2156:tid 312] AH00455: Apache/2.4.18 (Win32) OpenSSL/1.0.2e mod_fcgid/2.3.9 configured -- resuming normal operations
[Tue Oct 25 16:30:09.498782 2016] [mpm_winnt:notice] [pid 2156:tid 312] AH00456: Server built: Dec 9 2015 12:21:09
[Tue Oct 25 16:30:09.498782 2016] [core:notice] [pid 2156:tid 312] AH00094: Command line: 'H:\\phpStudy\\Apache\\bin\\httpd.exe -d H:/phpStudy/Apache'
[Tue Oct 25 16:30:09.523783 2016] [mpm_winnt:notice] [pid 2156:tid 312] AH00418: Parent: Created child process 5232
[Tue Oct 25 16:30:10.400833 2016] [mpm_winnt:notice] [pid 5232:tid 328] AH00354: Child: Starting 150 worker threads.
[Tue Oct 25 16:16:48.848063 2016] [mpm_winnt:notice] [pid 6252:tid 364] AH00456: Server built: Dec 9 2015 12:21:09
[Tue Oct 25 16:16:48.848063 2016] [core:notice] [pid 6252:tid 364] AH00094: Command line: 'H:\\phpStudy\\Apache\\bin\\httpd.exe -d H:/phpStudy/Apache'
[Tue Oct 25 16:16:48.894863 2016] [mpm_winnt:notice] [pid 6252:tid 364] AH00418: Parent: Created child process 6072
[Tue Oct 25 16:16:49.955665 2016] [mpm_winnt:notice] [pid 6072:tid 380] AH00354: Child: Starting 150 worker threads.
[Tue Oct 25 16:19:19.856430 2016] [mpm_winnt:crit] [pid 6072:tid 380] AH02538: Child: Parent process exited abruptly. Child process is ending
[Tue Oct 25 16:20:15.440328 2016] [core:warn] [pid 5492:tid 312] AH00098: pid file H:/phpStudy/Apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?
[Tue Oct 25 16:20:15.565128 2016] [mpm_winnt:notice] [pid 5492:tid 312] AH00455: Apache/2.4.18 (Win32) OpenSSL/1.0.2e mod_fcgid/2.3.9 configured -- resuming normal operations
[Tue Oct 25 16:20:15.565128 2016] [mpm_winnt:notice] [pid 5492:tid 312] AH00456: Server built: Dec 9 2015 12:21:09
[Tue Oct 25 16:20:15.565128 2016] [core:notice] [pid 5492:tid 312] AH00094: Command line: 'H:\\phpStudy\\Apache\\bin\\httpd.exe -d H:/phpStudy/Apache'
[Tue Oct 25 16:20:15.580728 2016] [mpm_winnt:notice] [pid 5492:tid 312] AH00418: Parent: Created child process 4104
[Tue Oct 25 16:20:16.407529 2016] [mpm_winnt:notice] [pid 4104:tid 328] AH00354: Child: Starting 150 worker threads.
[Tue Oct 25 16:20:54.409196 2016] [mpm_winnt:crit] [pid 4104:tid 328] AH02538: Child: Parent process exited abruptly. Child process is ending
[Tue Oct 25 16:21:00.618007 2016] [core:warn] [pid 7752:tid 312] AH00098: pid file H:/phpStudy/Apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?
[Tue Oct 25 16:21:00.727207 2016] [mpm_winnt:notice] [pid 7752:tid 312] AH00455: Apache/2.4.18 (Win32) OpenSSL/1.0.2e mod_fcgid/2.3.9 configured -- resuming normal operations
[Tue Oct 25 16:21:00.727207 2016] [mpm_winnt:notice] [pid 7752:tid 312] AH00456: Server built: Dec 9 2015 12:21:09
[Tue Oct 25 16:21:00.727207 2016] [core:notice] [pid 7752:tid 312] AH00094: Command line: 'H:\\phpStudy\\Apache\\bin\\httpd.exe -d H:/phpStudy/Apache'
[Tue Oct 25 16:21:00.758407 2016] [mpm_winnt:notice] [pid 7752:tid 312] AH00418: Parent: Created child process 4692
[Tue Oct 25 16:21:01.616409 2016] [mpm_winnt:notice] [pid 4692:tid 328] AH00354: Child: Starting 150 worker threads.
[Tue Oct 25 16:28:19.334481 2016] [mpm_winnt:crit] [pid 4692:tid 328] AH02538: Child: Parent process exited abruptly. Child process is ending
[Tue Oct 25 16:28:25.740847 2016] [core:warn] [pid 1492:tid 364] AH00098: pid file H:/phpStudy/Apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?
[Tue Oct 25 16:28:25.916857 2016] [mpm_winnt:notice] [pid 1492:tid 364] AH00455: Apache/2.4.18 (Win32) OpenSSL/1.0.2e PHP/5.3.29 configured -- resuming normal operations
[Tue Oct 25 16:28:25.916857 2016] [mpm_winnt:notice] [pid 1492:tid 364] AH00456: Server built: Dec 9 2015 12:21:09
[Tue Oct 25 16:28:25.916857 2016] [core:notice] [pid 1492:tid 364] AH00094: Command line: 'H:\\phpStudy\\Apache\\bin\\httpd.exe -d H:/phpStudy/Apache'
[Tue Oct 25 16:28:25.945859 2016] [mpm_winnt:notice] [pid 1492:tid 364] AH00418: Parent: Created child process 8472
[Tue Oct 25 16:28:26.893913 2016] [mpm_winnt:notice] [pid 8472:tid 380] AH00354: Child: Starting 150 worker threads.
[Tue Oct 25 16:28:32.044208 2016] [mpm_winnt:crit] [pid 8472:tid 380] AH02538: Child: Parent process exited abruptly. Child process is ending
[Tue Oct 25 16:28:38.435573 2016] [core:warn] [pid 6028:tid 356] AH00098: pid file H:/phpStudy/Apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?
[Tue Oct 25 16:28:38.634585 2016] [mpm_winnt:notice] [pid 6028:tid 356] AH00455: Apache/2.4.18 (Win32) OpenSSL/1.0.2e PHP/5.5.30 configured -- resuming normal operations
[Tue Oct 25 16:28:38.634585 2016] [mpm_winnt:notice] [pid 6028:tid 356] AH00456: Server built: Dec 9 2015 12:21:09
[Tue Oct 25 16:28:38.634585 2016] [core:notice] [pid 6028:tid 356] AH00094: Command line: 'H:\\phpStudy\\Apache\\bin\\httpd.exe -d H:/phpStudy/Apache'
[Tue Oct 25 16:28:38.660586 2016] [mpm_winnt:notice] [pid 6028:tid 356] AH00418: Parent: Created child process 4044
[Tue Oct 25 16:28:39.618641 2016] [mpm_winnt:notice] [pid 4044:tid 372] AH00354: Child: Starting 150 worker threads.
[Tue Oct 25 16:29:17.559811 2016] [mpm_winnt:crit] [pid 4044:tid 372] AH02538: Child: Parent process exited abruptly. Child process is ending
[Tue Oct 25 16:29:20.320969 2016] [core:warn] [pid 744:tid 360] AH00098: pid file H:/phpStudy/Apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?
[Tue Oct 25 16:29:20.494979 2016] [mpm_winnt:notice] [pid 744:tid 360] AH00455: Apache/2.4.18 (Win32) OpenSSL/1.0.2e mod_fcgid/2.3.9 PHP/5.5.30 configured -- resuming normal operations
[Tue Oct 25 16:29:20.494979 2016] [mpm_winnt:notice] [pid 744:tid 360] AH00456: Server built: Dec 9 2015 12:21:09
[Tue Oct 25 16:29:20.494979 2016] [core:notice] [pid 744:tid 360] AH00094: Command line: 'H:\\phpStudy\\Apache\\bin\\httpd.exe -d H:/phpStudy/Apache'
[Tue Oct 25 16:29:20.520980 2016] [mpm_winnt:notice] [pid 744:tid 360] AH00418: Parent: Created child process 2892
[Tue Oct 25 16:29:21.496036 2016] [mpm_winnt:notice] [pid 2892:tid 376] AH00354: Child: Starting 150 worker threads.
[Tue Oct 25 16:30:03.043413 2016] [mpm_winnt:crit] [pid 2892:tid 376] AH02538: Child: Parent process exited abruptly. Child process is ending
[Tue Oct 25 16:30:09.374775 2016] [core:warn] [pid 2156:tid 312] AH00098: pid file H:/phpStudy/Apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?
[Tue Oct 25 16:30:09.498782 2016] [mpm_winnt:notice] [pid 2156:tid 312] AH00455: Apache/2.4.18 (Win32) OpenSSL/1.0.2e mod_fcgid/2.3.9 configured -- resuming normal operations
[Tue Oct 25 16:30:09.498782 2016] [mpm_winnt:notice] [pid 2156:tid 312] AH00456: Server built: Dec 9 2015 12:21:09
[Tue Oct 25 16:30:09.498782 2016] [core:notice] [pid 2156:tid 312] AH00094: Command line: 'H:\\phpStudy\\Apache\\bin\\httpd.exe -d H:/phpStudy/Apache'
[Tue Oct 25 16:30:09.523783 2016] [mpm_winnt:notice] [pid 2156:tid 312] AH00418: Parent: Created child process 5232
[Tue Oct 25 16:30:10.400833 2016] [mpm_winnt:notice] [pid 5232:tid 328] AH00354: Child: Starting 150 worker threads.
MaxRequestsPerChild 1000 把150改300试试，看样子是你访问太多了。
这个应该是php版本与apache版本搭配不当的问题造成的，我之前遇到过，换了个合适版本就好了