xe -> 라이믹스 전환 후기2 (조언 요청드려요)

여러 분들에 조언에 따라

DB를 innodb로 전환 ..라이믹스 설정까지 변경 완료하였습니다.

mysql 관련 설정도 변경하였습니다.

my.ini 설정 

key_buffer = 256M
max_allowed_packet = 128M
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M

innodb_data_home_dir = "/xampp/mysql/data"
innodb_data_file_path = ibdata1:20M:autoextend
innodb_log_group_home_dir = "/xampp/mysql/data"
innodb_buffer_pool_size = 10240M
innodb_log_file_size = 1024M
innodb_log_buffer_size = 8M
# innodb_flush_method = async_unbuffered
# innodb_flush_log_at_trx_commit = 2
innodb_lock_wait_timeout = 50
max_connections = 15000

---------------------

여전히 사이트가 느리다가 접속 불가가 됩니다.

아파치 에러 로그를 보면 아래와 같습니다.

[Wed Oct 07 14:34:21.728414 2020] [mpm_winnt:notice] [pid 31468:tid 408] AH00422: Parent: Received shutdown signal -- Shutting down the server.
[Wed Oct 07 14:34:21.790926 2020] [mpm_winnt:notice] [pid 31468:tid 408] AH00430: Parent: Child process 31096 exited successfully.
[Wed Oct 07 14:34:44.467215 2020] [mpm_winnt:notice] [pid 8484:tid 424] AH00362: Child: Waiting 270 more seconds for 1 worker threads to finish.
[Wed Oct 07 14:35:17.286016 2020] [mpm_winnt:notice] [pid 8484:tid 424] AH00362: Child: Waiting 240 more seconds for 1 worker threads to finish.
[Wed Oct 07 14:35:29.757210 2020] [mpm_winnt:notice] [pid 20120:tid 368] AH00455: Apache/2.4.41 (Win64) OpenSSL/1.0.2s PHP/7.1.33 configured -- resuming normal operations
[Wed Oct 07 14:35:29.757210 2020] [mpm_winnt:notice] [pid 20120:tid 368] AH00456: Apache Lounge VC14 Server built: Aug 12 2019 10:48:01
[Wed Oct 07 14:35:29.757210 2020] [core:notice] [pid 20120:tid 368] AH00094: Command line: 'c:\\xampp\\apache\\bin\\httpd.exe -d C:/xampp/apache'
[Wed Oct 07 14:35:29.757210 2020] [mpm_winnt:notice] [pid 20120:tid 368] AH00418: Parent: Created child process 22416
[Wed Oct 07 14:35:30.241681 2020] [mpm_winnt:notice] [pid 22416:tid 152] AH00354: Child: Starting 1920 worker threads.
[Wed Oct 07 14:35:31.757560 2020] [php7:error] [pid 22416:tid 15520] [client 147.6.1.2:57323] PHP Fatal error:  Out of memory (allocated 2097152) (tried to allocate 65536 bytes) in D:\\kkiss\\modules\\document\\document.item.php on line 804
[Wed Oct 07 14:35:31.757560 2020] [php7:notice] [pid 22416:tid 15520] [client 147.6.1.2:57323] PHP Fatal Error: Out of memory (allocated 2097152) (tried to allocate 65536 bytes) in D:\\kkiss\\modules\\document\\document.item.php on line 804
[Wed Oct 07 14:35:35.133211 2020] [php7:error] [pid 22416:tid 15492] [client 147.6.1.2:63392] PHP Fatal error:  Out of memory (allocated 2097152) (tried to allocate 65536 bytes) in D:\\kkiss\\modules\\document\\document.item.php on line 804
[Wed Oct 07 14:35:35.148840 2020] [php7:notice] [pid 22416:tid 15492] [client 147.6.1.2:63392] PHP Fatal Error: Out of memory (allocated 2097152) (tried to allocate 65536 bytes) in D:\\kkiss\\modules\\document\\document.item.php on line 804

php memory_limit = 10240M (10기가) 입니다.

어떤 곳을 수정해봐야 할까요?