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litespeed_wiki:php:concurrency [2019/03/29 17:46] Jackson Zhang [PHP suEXEC Max Conn was changed but why not effective?] |
litespeed_wiki:php:concurrency [2019/03/29 19:27] Lisa Clarke Proofreading |
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| This wiki will go over the ways to control concurrency with different PHP LSAPI setups. | This wiki will go over the ways to control concurrency with different PHP LSAPI setups. | ||
| - | ====== PHP suEXEC Max Connections ====== | + | ===== PHP suEXEC Max Connections ===== |
| LSWS offers three different PHP suEXEC modes: [[https://www.litespeedtech.com/docs/litespeed-sapi/php-lsapi/suexec-worker|Worker]], [[https://www.litespeedtech.com/docs/litespeed-sapi/php-lsapi/suexec-daemon-mode|Daemon]], and [[https://www.litespeedtech.com/docs/litespeed-sapi/php-lsapi/suexec-processgroup|ProcessGroup]]. | LSWS offers three different PHP suEXEC modes: [[https://www.litespeedtech.com/docs/litespeed-sapi/php-lsapi/suexec-worker|Worker]], [[https://www.litespeedtech.com/docs/litespeed-sapi/php-lsapi/suexec-daemon-mode|Daemon]], and [[https://www.litespeedtech.com/docs/litespeed-sapi/php-lsapi/suexec-processgroup|ProcessGroup]]. | ||
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| LSPHP_Workers 100 | LSPHP_Workers 100 | ||
| </IfModule> | </IfModule> | ||
| - | ====== PHP Non-suEXEC Max Connections ====== | + | ===== PHP Non-suEXEC Max Connections ===== |
| LSWS offers two non-suEXEC PHP modes: Worker and ProcessGroup. | LSWS offers two non-suEXEC PHP modes: Worker and ProcessGroup. | ||
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| - ProcessGroup: In ProcessGroup, the Instances setting must be set to 1. Control the number of processes instead with the [[https://www.litespeedtech.com/docs/litespeed-sapi/php-lsapi/configuration|PHP_LSAPI_CHILDREN environment variable]]. | - ProcessGroup: In ProcessGroup, the Instances setting must be set to 1. Control the number of processes instead with the [[https://www.litespeedtech.com/docs/litespeed-sapi/php-lsapi/configuration|PHP_LSAPI_CHILDREN environment variable]]. | ||
| - | ====== Which setup am I using? ====== | + | ===== Determining Which PHP Setup is in Use ===== |
| Some users may be confused about which setup they are using. Follow the steps in the [[litespeed_wiki:php:which_php_setup_am_I_using|Which PHP setup am I using? wiki]] to figure it out. | Some users may be confused about which setup they are using. Follow the steps in the [[litespeed_wiki:php:which_php_setup_am_I_using|Which PHP setup am I using? wiki]] to figure it out. | ||
| - | ====== Reached max children process limit? ====== | + | ===== Reached Max Children Process Limit ====== |
| You might have already fine-tuned the environment variables such as LSAPI_CHILDREN to 50 but still experienced error message like “Reached max children process limit: 15, extra: 5, current: 20, please increase LSAPI_CHILDREN”. <env>LSAPI_CHILDREN=50</env> has been double-checked in lsphp5 external app and seems no problem. Why doesn't match? What happened? How to fix it? | You might have already fine-tuned the environment variables such as LSAPI_CHILDREN to 50 but still experienced error message like “Reached max children process limit: 15, extra: 5, current: 20, please increase LSAPI_CHILDREN”. <env>LSAPI_CHILDREN=50</env> has been double-checked in lsphp5 external app and seems no problem. Why doesn't match? What happened? How to fix it? | ||
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| On the other hand, you should verify if it is normal to have so many PHP processes. You may try to enable cache to avoid such high PHP processes. | On the other hand, you should verify if it is normal to have so many PHP processes. You may try to enable cache to avoid such high PHP processes. | ||
| - | ====== PHP suEXEC Max Conn was changed but why not effective? ====== | + | ===== New PHP suEXEC Max Conn Being Ignored ===== |
| - | After you change "PHP suEXEC Max Conn", for example, from ''10'' to ''20'', error messages sometime shows as old value ''10''.Why? | + | After you change **PHP suEXEC Max Conn**, for example, from ''10'' to ''20'', error messages sometime show as mixed old value ''10'' and new setting ''20''. Why? |
| (14715) Reached max children process limit: 10, extra: 3, current: 13, busy: 12, please increase LSAPI_CHILDREN. | (14715) Reached max children process limit: 10, extra: 3, current: 13, busy: 12, please increase LSAPI_CHILDREN. | ||
| (28253) Reached max children process limit: 20, extra: 6, current: 26, busy: 26, please increase LSAPI_CHILDREN. | (28253) Reached max children process limit: 20, extra: 6, current: 26, busy: 26, please increase LSAPI_CHILDREN. | ||
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| (28253) Reached max children process limit: 20, extra: 6, current: 26, busy: 26, please increase LSAPI_CHILDREN. | (28253) Reached max children process limit: 20, extra: 6, current: 26, busy: 26, please increase LSAPI_CHILDREN. | ||
| - | + | To make the change effective immediately, you will need to restart LiteSpeed Web Server. If LSWS 5.3+ is used, you will also need to restart detached PHPs | |
| - | To make the change effective immediately, you will need to restart LiteSpeed web server and restart detached PHPs if LSWS 5.3.x is used. | + | |
| service lsws restart | service lsws restart | ||
| killall lsphp | killall lsphp | ||
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