On 13/04/22 10:30, Eliezer Croitoru wrote:
I am looking for adventurous Squid Users which wants to help me test if
PHP 7.4+ still possess the same old 5.x STDIN bugs.
Hi Eliezer, Thanks for taking on a re-investingation.
FTR, the old problem was not stdin itself. The issue was that PHP was
designed with the fundamental assumption that it was used for scripts
with very short execution times. Implying that all resources used would
be freed quickly.
This assumption resulted in scripts (like helpers) which need to run for
very long times having terrible memory and resource consumption side
effects. Naturally that effect alone compounds badly when Squid attempts
to run dozens or hundreds of helpers at once.
Later versions (PHP-3/4/5) that I tested had various attempts at
internal Zend engine controls to limit the memory problems. Based on the
same assumption though, so they chose to terminate helpers early. Which
still causes Squid issues. PHP config settings for that Zend timeout
were unreliable.
AFAIK, That is where we are with knowledge of PHP vs helper usage.
PHP-6+ have not had any serious testing to check if the language updates
have improved either resource usage or the Zend timeout/abort behaviour.
HTH
Amos
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