What happened?
Description
As previously reported in #15571, if there are connection issues to the license API, the CP hangs. It's now been reduced to 15 seconds (thanks!), but the problem could probably be eliminated altogether. Here's a suggestion by our hosting provider:
It seems the PHP process with the curl_exec holds a lock during the blocking request, which other PHP processes then have to wait for and are thus delayed for just as long as the curl_exec.
The most likely candidate would be the session lock:
https://stackoverflow.com/a/38217390/1563584
(Detailed explanation of session locks:
https://ma.ttias.be/php-session-locking-prevent-sessions-blocking-in-requests/)
The best solution would be that Craft should not start a session in the license check,
or end/close the session before the request to the license server...
Steps to reproduce
- On OS level, simulate that the Craft API server cannot be reached (timeout)
- Access the CP repeatedly (logged in)
Expected behavior
Normal performance
Actual behavior
The CP hangs up to the 15 second timeout since 5.3.5 / 4.11.4, or to curl's default timeout otherwise.
Craft CMS version
5.3.5
PHP version
8.3
Operating system and version
No response
Database type and version
No response
Image driver and version
No response
Installed plugins and versions
No response
What happened?
Description
As previously reported in #15571, if there are connection issues to the license API, the CP hangs. It's now been reduced to 15 seconds (thanks!), but the problem could probably be eliminated altogether. Here's a suggestion by our hosting provider:
It seems the PHP process with the curl_exec holds a lock during the blocking request, which other PHP processes then have to wait for and are thus delayed for just as long as the curl_exec.
The most likely candidate would be the session lock:
https://stackoverflow.com/a/38217390/1563584
(Detailed explanation of session locks:
https://ma.ttias.be/php-session-locking-prevent-sessions-blocking-in-requests/)
The best solution would be that Craft should not start a session in the license check,
or end/close the session before the request to the license server...
Steps to reproduce
Expected behavior
Normal performance
Actual behavior
The CP hangs up to the 15 second timeout since 5.3.5 / 4.11.4, or to curl's default timeout otherwise.
Craft CMS version
5.3.5
PHP version
8.3
Operating system and version
No response
Database type and version
No response
Image driver and version
No response
Installed plugins and versions
No response