1、命令行脚本的运行基于 Supervisor 提供支持，持续运行期间，占用内存过高的问题仍然未得到根本解决，查看网址：http://www.shuijingwanwq.com/2019/07/24/3376/
2、查看网址：https://stackoverflow.com/questions/27341846/using-supervisor-as-cron ，通过调用 bash sleep 命令，实现间隔一定时间执行命令行脚本，避免持续不间断的运行，以降低内存占用
3、开发环境，Docker 容器的 CPU：0.04%，内存：168MB，如图1
图1
4、查看 supervisord 运行状态：supervisorctl status
[root@09a3838784ce /]# ps aux|grep superviosrd root 1379 0.0 0.0 10696 996 pts/2 S+ 15:09 0:00 grep --color=auto superviosrd [root@09a3838784ce /]# supervisorctl status cronolog RUNNING pid 446, uptime 0:30:20 nginx RUNNING pid 441, uptime 0:30:20 php-fpm RUNNING pid 440, uptime 0:30:20 report_client RUNNING pid 444, uptime 0:30:20 yii-cmc-console-user-sync RUNNING pid 1341, uptime 0:00:58 yii-config-column-user-sync RUNNING pid 1382, uptime 0:00:02 yii-log-delete RUNNING pid 1377, uptime 0:00:16
5、编辑 /etc/supervisord.d/yii-cmc-console-user-sync.ini、/etc/supervisord.d/yii-config-column-user-sync.ini、/etc/supervisord.d/yii-log-delete.ini，这将 每60秒、每60秒、每300秒 运行一次命令
[program:yii-cmc-console-user-sync] command = bash -c 'sleep 60 && exec php /mcloud/www/pcs-api/yii cmc-console-user/sync' autorestart = true startsecs = 0 stopwaitsecs = 10 stderr_logfile = /data/logs/yii-cmc-console-user-sync-stderr.log stdout_logfile = /data/logs/yii-cmc-console-user-sync-stdout.log
[program:yii-config-column-user-sync] command = bash -c 'sleep 60 && exec php /mcloud/www/pcs-api/yii config-column-user/sync' autorestart = true startsecs = 0 stopwaitsecs = 10 stderr_logfile = /data/logs/yii-config-column-user-sync-stderr.log stdout_logfile = /data/logs/yii-config-column-user-sync-stdout.log
[program:yii-log-delete] command = bash -c 'sleep 300 && exec php /mcloud/www/pcs-api/yii log/delete' autorestart = true startsecs = 0 stopwaitsecs = 10 stderr_logfile = /data/logs/yii-log-delete-stderr.log stdout_logfile = /data/logs/yii-log-delete-stdout.log
6、在 3 个命令行的初始位置分别写入对应的文本文件，以检测命令行运行的间隔时间
file_put_contents('/mcloud/www/pcs-api/console/runtime/logs/cmc-console-user-sync-memory-get-usage-' . date('Y-m-d H:i:s', time()) . '.txt', memory_get_usage() / 1024 / 1024 . 'MB');
return ExitCode::OK;
file_put_contents('/mcloud/www/pcs-api/console/runtime/logs/config-column-user-sync-memory-get-usage-' . date('Y-m-d H:i:s', time()) . '.txt', memory_get_usage() / 1024 / 1024 . 'MB');
return ExitCode::OK;
file_put_contents('/mcloud/www/pcs-api/console/runtime/logs/log-delete-memory-get-usage-' . date('Y-m-d H:i:s', time()) . '.txt', memory_get_usage() / 1024 / 1024 . 'MB');
return ExitCode::OK;
7、查看写入的文本文件，以检测命令行运行的间隔时间，符合预期，如图2
图2
[root@38b6559d8629 /]# cd /mcloud/www/pcs-api/console/runtime/logs/ [root@38b6559d8629 logs]# ls -l total 124 -rw-r--r-- 1 root root 17084 Oct 9 16:39 app.log -rw-r--r-- 1 root root 17 Oct 9 16:40 cmc-console-user-sync-memory-get-usage-2019-10-09 16:40:56.txt -rw-r--r-- 1 root root 17 Oct 9 16:41 cmc-console-user-sync-memory-get-usage-2019-10-09 16:41:57.txt -rw-r--r-- 1 root root 17 Oct 9 16:42 cmc-console-user-sync-memory-get-usage-2019-10-09 16:42:58.txt -rw-r--r-- 1 root root 17 Oct 9 16:43 cmc-console-user-sync-memory-get-usage-2019-10-09 16:43:59.txt -rw-r--r-- 1 root root 17 Oct 9 16:45 cmc-console-user-sync-memory-get-usage-2019-10-09 16:45:00.txt -rw-r--r-- 1 root root 17 Oct 9 16:46 cmc-console-user-sync-memory-get-usage-2019-10-09 16:46:02.txt -rw-r--r-- 1 root root 17 Oct 9 16:47 cmc-console-user-sync-memory-get-usage-2019-10-09 16:47:03.txt -rw-r--r-- 1 root root 17 Oct 9 16:48 cmc-console-user-sync-memory-get-usage-2019-10-09 16:48:04.txt -rw-r--r-- 1 root root 17 Oct 9 16:49 cmc-console-user-sync-memory-get-usage-2019-10-09 16:49:05.txt -rw-r--r-- 1 root root 17 Oct 9 16:50 cmc-console-user-sync-memory-get-usage-2019-10-09 16:50:06.txt -rw-r--r-- 1 root root 17 Oct 9 16:51 cmc-console-user-sync-memory-get-usage-2019-10-09 16:51:07.txt -rw-r--r-- 1 root root 17 Oct 9 16:52 cmc-console-user-sync-memory-get-usage-2019-10-09 16:52:08.txt -rw-r--r-- 1 root root 17 Oct 9 16:40 config-column-user-sync-memory-get-usage-2019-10-09 16:40:57.txt -rw-r--r-- 1 root root 17 Oct 9 16:41 config-column-user-sync-memory-get-usage-2019-10-09 16:41:58.txt -rw-r--r-- 1 root root 17 Oct 9 16:42 config-column-user-sync-memory-get-usage-2019-10-09 16:42:59.txt -rw-r--r-- 1 root root 17 Oct 9 16:44 config-column-user-sync-memory-get-usage-2019-10-09 16:44:00.txt -rw-r--r-- 1 root root 17 Oct 9 16:45 config-column-user-sync-memory-get-usage-2019-10-09 16:45:01.txt -rw-r--r-- 1 root root 17 Oct 9 16:46 config-column-user-sync-memory-get-usage-2019-10-09 16:46:03.txt -rw-r--r-- 1 root root 17 Oct 9 16:47 config-column-user-sync-memory-get-usage-2019-10-09 16:47:04.txt -rw-r--r-- 1 root root 17 Oct 9 16:48 config-column-user-sync-memory-get-usage-2019-10-09 16:48:05.txt -rw-r--r-- 1 root root 17 Oct 9 16:49 config-column-user-sync-memory-get-usage-2019-10-09 16:49:06.txt -rw-r--r-- 1 root root 17 Oct 9 16:50 config-column-user-sync-memory-get-usage-2019-10-09 16:50:07.txt -rw-r--r-- 1 root root 17 Oct 9 16:51 config-column-user-sync-memory-get-usage-2019-10-09 16:51:08.txt -rw-r--r-- 1 root root 17 Oct 9 16:52 config-column-user-sync-memory-get-usage-2019-10-09 16:52:09.txt -rw-r--r-- 1 root root 17 Oct 9 16:43 log-delete-memory-get-usage-2019-10-09 16:43:56.txt -rw-r--r-- 1 root root 17 Oct 9 16:48 log-delete-memory-get-usage-2019-10-09 16:48:57.txt
8、在 3 个命令行的初始位置分别写入对应的文本文件，删除成功退出命令，以检测命令行运行的间隔加运行时间(包含命令行自身运行的时间长度)
file_put_contents('/mcloud/www/pcs-api/console/runtime/logs/cmc-console-user-sync-memory-get-usage-' . date('Y-m-d H:i:s', time()) . '.txt', memory_get_usage() / 1024 / 1024 . 'MB');
file_put_contents('/mcloud/www/pcs-api/console/runtime/logs/config-column-user-sync-memory-get-usage-' . date('Y-m-d H:i:s', time()) . '.txt', memory_get_usage() / 1024 / 1024 . 'MB');
file_put_contents('/mcloud/www/pcs-api/console/runtime/logs/log-delete-memory-get-usage-' . date('Y-m-d H:i:s', time()) . '.txt', memory_get_usage() / 1024 / 1024 . 'MB');
9、查看写入的文本文件，以检测命令行运行的间隔加运行时间(包含命令行自身运行的时间长度)，符合预期，如图3
图3
[root@adcf56a0b62b /]# cd /mcloud/www/pcs-api/console/runtime/logs/ [root@adcf56a0b62b logs]# ls -l total 112 -rw-r--r-- 1 root root 17084 Oct 9 16:13 app.log -rw-r--r-- 1 root root 17 Oct 9 16:15 cmc-console-user-sync-memory-get-usage-2019-10-09 16:15:00.txt -rw-r--r-- 1 root root 17 Oct 9 16:14 config-column-user-sync-memory-get-usage-2019-10-09 16:14:59.txt -rw-r--r-- 1 root root 17 Oct 9 16:16 config-column-user-sync-memory-get-usage-2019-10-09 16:16:01.txt -rw-r--r-- 1 root root 17 Oct 9 16:17 config-column-user-sync-memory-get-usage-2019-10-09 16:17:02.txt -rw-r--r-- 1 root root 17 Oct 9 16:18 config-column-user-sync-memory-get-usage-2019-10-09 16:18:04.txt -rw-r--r-- 1 root root 17 Oct 9 16:19 config-column-user-sync-memory-get-usage-2019-10-09 16:19:05.txt -rw-r--r-- 1 root root 17 Oct 9 16:20 config-column-user-sync-memory-get-usage-2019-10-09 16:20:07.txt -rw-r--r-- 1 root root 17 Oct 9 16:21 config-column-user-sync-memory-get-usage-2019-10-09 16:21:08.txt -rw-r--r-- 1 root root 17 Oct 9 16:22 config-column-user-sync-memory-get-usage-2019-10-09 16:22:10.txt -rw-r--r-- 1 root root 17 Oct 9 16:23 config-column-user-sync-memory-get-usage-2019-10-09 16:23:11.txt -rw-r--r-- 1 root root 17 Oct 9 16:24 config-column-user-sync-memory-get-usage-2019-10-09 16:24:13.txt -rw-r--r-- 1 root root 17 Oct 9 16:25 config-column-user-sync-memory-get-usage-2019-10-09 16:25:14.txt -rw-r--r-- 1 root root 17 Oct 9 16:26 config-column-user-sync-memory-get-usage-2019-10-09 16:26:16.txt -rw-r--r-- 1 root root 17 Oct 9 16:27 config-column-user-sync-memory-get-usage-2019-10-09 16:27:17.txt -rw-r--r-- 1 root root 17 Oct 9 16:28 config-column-user-sync-memory-get-usage-2019-10-09 16:28:19.txt -rw-r--r-- 1 root root 17 Oct 9 16:29 config-column-user-sync-memory-get-usage-2019-10-09 16:29:20.txt -rw-r--r-- 1 root root 17 Oct 9 16:30 config-column-user-sync-memory-get-usage-2019-10-09 16:30:22.txt -rw-r--r-- 1 root root 17 Oct 9 16:31 config-column-user-sync-memory-get-usage-2019-10-09 16:31:23.txt -rw-r--r-- 1 root root 17 Oct 9 16:32 config-column-user-sync-memory-get-usage-2019-10-09 16:32:25.txt -rw-r--r-- 1 root root 17 Oct 9 16:33 config-column-user-sync-memory-get-usage-2019-10-09 16:33:27.txt -rw-r--r-- 1 root root 17 Oct 9 16:34 config-column-user-sync-memory-get-usage-2019-10-09 16:34:28.txt -rw-r--r-- 1 root root 17 Oct 9 16:17 log-delete-memory-get-usage-2019-10-09 16:17:59.txt -rw-r--r-- 1 root root 17 Oct 9 16:33 log-delete-memory-get-usage-2019-10-09 16:33:00.txt
10、在命令行中抛出异常，以检测 Supervisor 是否持续启动命令行脚本，日志表中持续写入异常日志，仍然持续启动命令行脚本，如图4
图4
[root@2e54908c8679 /]# ps aux|grep superviosrd root 858 0.0 0.0 10696 992 pts/2 R+ 17:10 0:00 grep --color=auto superviosrd [root@2e54908c8679 /]# supervisorctl status cronolog RUNNING pid 446, uptime 0:10:28 nginx RUNNING pid 441, uptime 0:10:28 php-fpm RUNNING pid 440, uptime 0:10:29 report_client RUNNING pid 444, uptime 0:10:28 yii-cmc-console-user-sync RUNNING pid 846, uptime 0:00:18 yii-config-column-user-sync RUNNING pid 848, uptime 0:00:17 yii-log-delete RUNNING pid 443, uptime 0:10:28 [root@2e54908c8679 /]# cd /mcloud/www/pcs-api/console/runtime/logs/ [root@2e54908c8679 logs]# ls -l total 256 -rw-r--r-- 1 root root 176844 Oct 9 17:09 app.log -rw-r--r-- 1 root root 17 Oct 9 17:01 cmc-console-user-sync-memory-get-usage-2019-10-09 17:01:43.txt -rw-r--r-- 1 root root 17 Oct 9 17:02 cmc-console-user-sync-memory-get-usage-2019-10-09 17:02:44.txt -rw-r--r-- 1 root root 17 Oct 9 17:03 cmc-console-user-sync-memory-get-usage-2019-10-09 17:03:45.txt -rw-r--r-- 1 root root 17 Oct 9 17:04 cmc-console-user-sync-memory-get-usage-2019-10-09 17:04:46.txt -rw-r--r-- 1 root root 17 Oct 9 17:05 cmc-console-user-sync-memory-get-usage-2019-10-09 17:05:47.txt -rw-r--r-- 1 root root 17 Oct 9 17:06 cmc-console-user-sync-memory-get-usage-2019-10-09 17:06:49.txt -rw-r--r-- 1 root root 17 Oct 9 17:07 cmc-console-user-sync-memory-get-usage-2019-10-09 17:07:50.txt -rw-r--r-- 1 root root 17 Oct 9 17:08 cmc-console-user-sync-memory-get-usage-2019-10-09 17:08:51.txt -rw-r--r-- 1 root root 17 Oct 9 17:09 cmc-console-user-sync-memory-get-usage-2019-10-09 17:09:52.txt -rw-r--r-- 1 root root 17 Oct 9 17:01 config-column-user-sync-memory-get-usage-2019-10-09 17:01:44.txt -rw-r--r-- 1 root root 17 Oct 9 17:02 config-column-user-sync-memory-get-usage-2019-10-09 17:02:45.txt -rw-r--r-- 1 root root 17 Oct 9 17:03 config-column-user-sync-memory-get-usage-2019-10-09 17:03:46.txt -rw-r--r-- 1 root root 17 Oct 9 17:04 config-column-user-sync-memory-get-usage-2019-10-09 17:04:47.txt -rw-r--r-- 1 root root 17 Oct 9 17:05 config-column-user-sync-memory-get-usage-2019-10-09 17:05:48.txt -rw-r--r-- 1 root root 17 Oct 9 17:06 config-column-user-sync-memory-get-usage-2019-10-09 17:06:50.txt -rw-r--r-- 1 root root 17 Oct 9 17:07 config-column-user-sync-memory-get-usage-2019-10-09 17:07:51.txt -rw-r--r-- 1 root root 17 Oct 9 17:08 config-column-user-sync-memory-get-usage-2019-10-09 17:08:52.txt -rw-r--r-- 1 root root 17 Oct 9 17:09 config-column-user-sync-memory-get-usage-2019-10-09 17:09:53.txt -rw-r--r-- 1 root root 17 Oct 9 17:04 log-delete-memory-get-usage-2019-10-09 17:04:43.txt
11、还原第 8 步骤所做的修改，升级至开发环境，Docker 容器的 CPU：0.04%，内存：335MB，内存增加了 (335MB – 168MB) = 167MB 左右，如图5
图5
12、查看 supervisord 运行状态：supervisorctl status，无甚变化
[root@c37ccca41d34 /]# ps aux|grep superviosrd root 796 0.0 0.0 10696 992 pts/2 S+ 17:48 0:00 grep --color=auto superviosrd [root@c37ccca41d34 /]# supervisorctl status cronolog RUNNING pid 446, uptime 0:10:37 nginx RUNNING pid 441, uptime 0:10:37 php-fpm RUNNING pid 440, uptime 0:10:37 report_client RUNNING pid 444, uptime 0:10:37 yii-cmc-console-user-sync RUNNING pid 798, uptime 0:00:02 yii-config-column-user-sync RUNNING pid 766, uptime 0:00:21 yii-log-delete RUNNING pid 443, uptime 0:10:37
13、总结：基于 Supervisor 的 crontab 的实现，符合预期，命令行每一次的运行结束后，将 每60秒、每60秒、每300秒 后再次开始运行。内存占用的明显上升，根源在于：bash sleep 的持续运行 (占用大量内存) ， Yii 2 sleep 的持续运行 (框架在运行期间加载了大量的数据至内存中，内存占用有所减少，但被 bash sleep 的持续运行 所抵消)
14、Supervisor 的配置文件的 program 配置项，将 startsecs 的值调整为 bash sleep 的值，需要考虑进程启动成功的时间, 当 running 状态超过该值时，表明启动成功。注：现在可以确保每次皆是启动成功的
[program:yii-cmc-console-user-sync] command = bash -c 'sleep 60 && exec php /mcloud/www/pcs-api/yii cmc-console-user/sync' autorestart = true startsecs = 60 stopwaitsecs = 10 stderr_logfile = /data/logs/yii-cmc-console-user-sync-stderr.log stdout_logfile = /data/logs/yii-cmc-console-user-sync-stdout.log
[program:yii-config-column-user-sync] command = bash -c 'sleep 60 && exec php /mcloud/www/pcs-api/yii config-column-user/sync' autorestart = true startsecs = 60 stopwaitsecs = 10 stderr_logfile = /data/logs/yii-config-column-user-sync-stderr.log stdout_logfile = /data/logs/yii-config-column-user-sync-stdout.log
[program:yii-log-delete] command = bash -c 'sleep 300 && exec php /mcloud/www/pcs-api/yii log/delete' autorestart = true startsecs = 300 stopwaitsecs = 10 stderr_logfile = /data/logs/yii-log-delete-stderr.log stdout_logfile = /data/logs/yii-log-delete-stdout.log
15、升级至开发环境，Docker 容器的 CPU：0.04%，内存：270MB，内存减少了 (335MB – 270MB) = 65MB 左右，但是，比之最初始的内存占用，内存增加了 (270MB – 168MB) = 102MB 左右，未达到内存占用减少的预期，如图6
图6
16、查看 supervisord 运行状态：supervisorctl status，第1列是服务名，第2列是运行状态，RUNNING 表示运行中，FATAL 表示运行失败，STARTING 表示正在启动，STOPED 表示任务已停止，第3/4列是进程号，最后是任务已经运行的时间
[root@8db3aeab0ebb /]# ps aux|grep superviosrd root 2150 0.0 0.0 10696 996 pts/2 R+ 10:40 0:00 grep --color=auto superviosrd [root@8db3aeab0ebb /]# supervisorctl status cronolog RUNNING pid 446, uptime 20:14:10 nginx RUNNING pid 441, uptime 20:14:10 php-fpm RUNNING pid 440, uptime 20:14:10 report_client RUNNING pid 444, uptime 20:14:10 yii-cmc-console-user-sync STARTING yii-config-column-user-sync STARTING yii-log-delete RUNNING pid 1906, uptime 0:06:42 [root@8db3aeab0ebb /]# supervisorctl status cronolog RUNNING pid 446, uptime 20:20:44 nginx RUNNING pid 441, uptime 20:20:44 php-fpm RUNNING pid 440, uptime 20:20:44 report_client RUNNING pid 444, uptime 20:20:44 yii-cmc-console-user-sync STARTING yii-config-column-user-sync RUNNING pid 2342, uptime 0:01:00 yii-log-delete RUNNING pid 1906, uptime 0:13:16
17、在 3 个命令行的初始位置分别写入对应的文本文件，以检测命令行运行的间隔时间
file_put_contents('/mcloud/www/pcs-api/console/runtime/logs/cmc-console-user-sync-memory-get-usage-' . date('Y-m-d H:i:s', time()) . '.txt', memory_get_usage() / 1024 / 1024 . 'MB');
return ExitCode::OK;
file_put_contents('/mcloud/www/pcs-api/console/runtime/logs/config-column-user-sync-memory-get-usage-' . date('Y-m-d H:i:s', time()) . '.txt', memory_get_usage() / 1024 / 1024 . 'MB');
return ExitCode::OK;
file_put_contents('/mcloud/www/pcs-api/console/runtime/logs/log-delete-memory-get-usage-' . date('Y-m-d H:i:s', time()) . '.txt', memory_get_usage() / 1024 / 1024 . 'MB');
return ExitCode::OK;
18、查看写入的文本文件，以检测命令行运行的间隔时间，每60秒、每60秒、每300秒 运行一次命令，符合预期
[root@b93baf1cb6ee /]# cd /mcloud/www/pcs-api/console/runtime/logs/ [root@b93baf1cb6ee logs]# ls -l total 104 -rw-r--r-- 1 root root 8549 Oct 11 11:09 app.log -rw-r--r-- 1 root root 17 Oct 11 11:09 cmc-console-user-sync-memory-get-usage-2019-10-11 11:09:21.txt -rw-r--r-- 1 root root 17 Oct 11 11:10 cmc-console-user-sync-memory-get-usage-2019-10-11 11:10:22.txt -rw-r--r-- 1 root root 17 Oct 11 11:11 cmc-console-user-sync-memory-get-usage-2019-10-11 11:11:23.txt -rw-r--r-- 1 root root 17 Oct 11 11:12 cmc-console-user-sync-memory-get-usage-2019-10-11 11:12:25.txt -rw-r--r-- 1 root root 17 Oct 11 11:13 cmc-console-user-sync-memory-get-usage-2019-10-11 11:13:26.txt -rw-r--r-- 1 root root 17 Oct 11 11:14 cmc-console-user-sync-memory-get-usage-2019-10-11 11:14:27.txt -rw-r--r-- 1 root root 17 Oct 11 11:15 cmc-console-user-sync-memory-get-usage-2019-10-11 11:15:28.txt -rw-r--r-- 1 root root 17 Oct 11 11:16 cmc-console-user-sync-memory-get-usage-2019-10-11 11:16:29.txt -rw-r--r-- 1 root root 17 Oct 11 11:17 cmc-console-user-sync-memory-get-usage-2019-10-11 11:17:30.txt -rw-r--r-- 1 root root 17 Oct 11 11:18 cmc-console-user-sync-memory-get-usage-2019-10-11 11:18:31.txt -rw-r--r-- 1 root root 17 Oct 11 11:19 cmc-console-user-sync-memory-get-usage-2019-10-11 11:19:32.txt -rw-r--r-- 1 root root 17 Oct 11 11:10 config-column-user-sync-memory-get-usage-2019-10-11 11:10:21.txt -rw-r--r-- 1 root root 17 Oct 11 11:11 config-column-user-sync-memory-get-usage-2019-10-11 11:11:22.txt -rw-r--r-- 1 root root 17 Oct 11 11:12 config-column-user-sync-memory-get-usage-2019-10-11 11:12:24.txt -rw-r--r-- 1 root root 17 Oct 11 11:13 config-column-user-sync-memory-get-usage-2019-10-11 11:13:25.txt -rw-r--r-- 1 root root 17 Oct 11 11:14 config-column-user-sync-memory-get-usage-2019-10-11 11:14:26.txt -rw-r--r-- 1 root root 17 Oct 11 11:15 config-column-user-sync-memory-get-usage-2019-10-11 11:15:27.txt -rw-r--r-- 1 root root 17 Oct 11 11:16 config-column-user-sync-memory-get-usage-2019-10-11 11:16:28.txt -rw-r--r-- 1 root root 17 Oct 11 11:17 config-column-user-sync-memory-get-usage-2019-10-11 11:17:29.txt -rw-r--r-- 1 root root 17 Oct 11 11:18 config-column-user-sync-memory-get-usage-2019-10-11 11:18:30.txt -rw-r--r-- 1 root root 17 Oct 11 11:19 config-column-user-sync-memory-get-usage-2019-10-11 11:19:31.txt -rw-r--r-- 1 root root 17 Oct 11 11:13 log-delete-memory-get-usage-2019-10-11 11:13:21.txt -rw-r--r-- 1 root root 17 Oct 11 11:18 log-delete-memory-get-usage-2019-10-11 11:18:22.txt
19、决定注释 Yii 2 命令行中的 sleep ，以降低命令行单次运行的时间长度。Yii 2 sleep 的持续运行 (框架在运行期间加载了大量的数据至内存中)。以便更进一步的降低内存占用(预计)。
/* 判断 $httpCmcApiGroupIds 是否为空，如果为空，则成功退出 */
if (empty($httpCmcApiGroupIds)) {
// 延缓执行 60 * 60 秒
// sleep(Yii::$app->params['cmcConsoleUser']['isEmptyYesSleepTime']);
return ExitCode::OK;
}
// 延缓执行 60 秒
// sleep(Yii::$app->params['cmcConsoleUser']['isEmptyNoSleepTime']);
return ExitCode::OK;
/* 判断 $cmcApiGroupIds 是否为空，如果为空，则成功退出 */
if (empty($cmcApiGroupIds)) {
// 延缓执行 60 * 60 秒
// sleep(Yii::$app->params['configColumnUser']['isEmptyYesSleepTime']);
return ExitCode::OK;
}
// 延缓执行 60 秒
// sleep(Yii::$app->params['configColumnUser']['isEmptyNoSleepTime']);
return ExitCode::OK;
// 延缓执行 10 * 60 秒
// sleep(static::SLEEP_TIME);
return ExitCode::OK;
20、升级至开发环境，Docker 容器的 CPU：0.04%，内存：292MB，内存增加了 (292MB – 270MB) = 20MB 左右，未符合预期，如图7
图7
21、调整间隔时间，每5秒、每5秒、每60秒 运行一次命令，Docker 容器的 CPU：0.04%，内存：109MB，内存减少了 (292MB – 109MB) = 183MB 左右，并且，比之最初始的内存占用，内存减少了 (168MB – 109MB) = 59MB 左右，已经达到内存占用减少的预期，如图8
图8
[program:yii-cmc-console-user-sync] command = bash -c 'sleep 5 && exec php /mcloud/www/pcs-api/yii cmc-console-user/sync' autorestart = true startsecs = 5 stopwaitsecs = 10 stderr_logfile = /data/logs/yii-cmc-console-user-sync-stderr.log stdout_logfile = /data/logs/yii-cmc-console-user-sync-stdout.log
[program:yii-config-column-user-sync] command = bash -c 'sleep 5 && exec php /mcloud/www/pcs-api/yii config-column-user/sync' autorestart = true startsecs = 5 stopwaitsecs = 10 stderr_logfile = /data/logs/yii-config-column-user-sync-stderr.log stdout_logfile = /data/logs/yii-config-column-user-sync-stdout.log
[program:yii-log-delete] command = bash -c 'sleep 60 && exec php /mcloud/www/pcs-api/yii log/delete' autorestart = true startsecs = 60 stopwaitsecs = 10 stderr_logfile = /data/logs/yii-log-delete-stderr.log stdout_logfile = /data/logs/yii-log-delete-stdout.log
22、查看另一个产品：渠道发布的开发环境，Docker 容器的 CPU：0.04%，内存：289MB，如图9
图9
23、在产品：渠道发布中，基于同样的流程，基于 Supervisor 的 crontab (bash sleep) 的实现，注释 Yii 2 命令行中的 sleep，每3秒、每3秒、每60秒 运行一次命令，升级至开发环境，Docker 容器的 CPU：0.04%，内存：182MB，内存减少了 (289MB – 182MB) = 107MB 左右，符合预期，如图10
图10
[program:yii-qq-cw-transaction-video-sync] command = bash -c 'sleep 3 && exec php /mcloud/www/channel-pub-api/yii qq-cw-transaction-video/sync' autorestart = true startsecs = 3 stopwaitsecs = 10 stderr_logfile = /data/logs/yii-qq-cw-transaction-video-sync-stderr.log stdout_logfile = /data/logs/yii-qq-cw-transaction-video-sync-stdout.log
[program:yii-qq-cw-transaction-article-sync] command = bash -c 'sleep 3 && exec php /mcloud/www/channel-pub-api/yii qq-cw-transaction-article/sync' autorestart = true startsecs = 3 stopwaitsecs = 10 stderr_logfile = /data/logs/yii-qq-cw-transaction-article-sync-stderr.log stdout_logfile = /data/logs/yii-qq-cw-transaction-article-sync-stdout.log
[program:yii-log-delete] command = bash -c 'sleep 60 && exec php /mcloud/www/channel-pub-api/yii log/delete' autorestart = true startsecs = 60 stopwaitsecs = 10 stderr_logfile = /data/logs/yii-log-delete-stderr.log stdout_logfile = /data/logs/yii-log-delete-stdout.log
24、总结：
(1)基于 Supervisor 的 crontab (bash sleep) 的实现，确定可以降低内存占用，crontab (bash sleep) 的值尽量控制在 60 之内，更大的话，内存占用会提升得比较厉害
(2)将 startsecs 的值调整为 bash sleep 的值，可有效降低内存占用
(3)Supervisor 的一个进程的运行时间，尽量控制得更短一些。不论是 bash sleep，还是 php sleep ，一旦其值过大，进行的运行时间过长，就会导致内存的过大占用
(4)之前 php sleep 的时候，为何内存占用得厉害，原因可能在于 Yii 2 sleep 的持续运行 (框架在运行期间加载了大量的数据至内存中)。因此，php 命令行本身对于内存的占用也是原因之一，尽量降低 php 命令行本身的运行时间，注释 php sleep
(5)在部署期间，crontab (bash sleep) 的值，建议在多次调整中，综合考虑，取最佳值
原创文章，作者：carmelaweatherly，如若转载，请注明出处：https://blog.ytso.com/181410.html