Edit report at https://bugs.php.net/bug.php?id=79519&edit=1
ID: 79519
Comment by: brendt at stitcher dot io
Reported by: kieran at miami-nice dot co dot uk
Summary: Memory leak in PHP 7.4
Status: Closed
Type: Bug
Package: Performance problem
Operating System: Linux
PHP Version: 7.4.5
Assigned To: nikic
Block user comment: N
Private report: N
New Comment:
I want to follow up on this one, since the issue doesn't seem to be resolved.
Tested on PHP 8.1.0 and PHPUnit 9.5.10; running a Laravel test suite of 1400 tests results in a
rather significant memory leak. Here's a screenshot of the memory consumption plotted in a
chart: https://user-images.githubusercontent.com/6905297/145394833-dc488206-238d-4164-86e4-e2ad8c824590.png
This is the issue related to Laravel discussing the problem: https://github.com/laravel/framework/issues/30736
And here's the phpunit issue: https://github.com/sebastianbergmann/phpunit/issues/3915
Previous Comments:
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[2021-06-09 13:01:12] nikic@php.net
In PHP 8.1, the memory leak for repeated included anonymous functions has been addressed by https://github.com/php/php-src/pull/5595 (or at
least, mostly addressed).
The GC with destructors issue has been addressed by https://github.com/php/php-src/pull/5581.
I believe that covers the issues raised here.
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[2020-09-22 21:27:39] nikic@php.net
Related To: Bug #80140
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[2020-08-10 20:30:00] nikic@php.net
I did some work on this in https://github.com/php/php-src/pull/5593 and https://github.com/php/php-src/pull/5595, but
unfortunately it's not easy to fix.
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[2020-08-10 20:19:32] kieran at supportpal dot com
Will there be a fix for this issue in PHP 8? Just tested against the PHP 8.0-beta.1 docker image and
memory usage matches PHP 7.4
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[2020-05-21 19:32:20] kieran at supportpal dot com
@nikita I think you're probably right:
> PHP 7.4 fixed some issues related to anonymous functions "overwriting" previous
> anonymous functions in the same file
I "memorised" the faker requires as suggested and it cut usage from 3.8G to 2.6G. So I
assume similar changes elsewhere would further reduce memory usage. The only problem is anonymous
function usage is rife in Laravel!
Not sure if you want to close this as duplicate of https://bugs.php.net/bug.php?id=76982 or repurpose
following below comment:
> The master branch case is still potentially actionable from our side.
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