After the performance test, ask the bosses how the memory occupied by the Apache child process can be quickly released.

performance test PHP interface. After testing, the memory occupied by httpd cannot be freed

CentOS6 Apache version 2.4.18 mpm mode event

event configuration

<IfModule mpm_worker_module>
    StartServers             3
    MinSpareThreads         75
    MaxSpareThreads        250
    ThreadsPerChild         25
    MaxRequestWorkers      400
    MaxConnectionsPerChild   0
</IfModule>

the event configuration has been changed, and the MaxConnectionsPerChild has been changed to 30000, which is of no use

use the top command to see that each process takes up 0.5% of memory

18055 uar       20   0 2373m  83m 3292 S  0.0  0.5   0:11.89 httpd                                                                                  
18054 uar       20   0 2373m  82m 3284 S  0.0  0.5   0:11.00 httpd                                                                                  
18111 uar       20   0 2373m  82m 3288 S  0.0  0.5   0:10.13 httpd                                                                                  
18114 uar       20   0 2373m  82m 3288 S  0.0  0.5   0:10.66 httpd                                                                                  
18115 uar       20   0 2373m  82m 3284 S  0.0  0.5   0:11.09 httpd                                                                                  
18112 uar       20   0 2373m  81m 3288 S  0.0  0.5   0:11.32 httpd   

after restarting apache, top views 0.1% of each process

 6943 root      20   0  387m  20m  13m S  0.0  0.1   2:21.02 httpd                                                                                  
 7106 root      20   0  256m  13m 6740 S  0.0  0.1   2:18.75 httpd                                                                                                                                                                   
13583 uar       20   0  592m  10m 1336 S  0.0  0.1   0:00.82 httpd                                                                                  
13582 uar       20   0  592m  10m 1332 S  0.0  0.1   0:00.79 httpd   
apache connection has been released
[root@cdh2 ~]-sharp netstat -an | grep 8081
tcp        0      0 :::8081                     :::*                        LISTEN    

ask the bosses how to reclaim the memory after the apache performance test

what result do you expect? What is the error message actually seen?

Dec.15,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-7ba177-1f0d2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-7ba177-1f0d2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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