A job does not release its memory after being ran

[momala454]

Laravel Version

12.21.0

PHP Version

8.4

Database Driver & Version

No response

Description

I have this job which fill a variable with a lot of data data

<?php

declare(strict_types=1);

namespace App\Jobs;

use Illuminate\Bus\Queueable;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;

#[\Illuminate\Container\Attributes\Scoped]
class TestBug implements \Illuminate\Contracts\Queue\ShouldQueue
{
    use Dispatchable;
    use InteractsWithQueue;
    use Queueable;
    use SerializesModels;

    protected string $bla;


    /**
     * Execute the job.
     */
    public function handle(): void
    {
        $this->bla = str_repeat('aaaaa', 10000000);
    }
}

I am monitoring the memory usage on AppServiceProvider

\Illuminate\Support\Facades\Queue::before(function (\Illuminate\Queue\Events\JobProcessing $job) {
            \Illuminate\Support\Facades\Log::info('Before ' . json_encode($job->job->payload()) . ' Memory : ' .
                        \Symfony\Component\Console\Helper\Helper::formatMemory(memory_get_usage())
                        . ' real : ' . \Symfony\Component\Console\Helper\Helper::formatMemory(memory_get_usage(true))
                        . ' peak : ' . \Symfony\Component\Console\Helper\Helper::formatMemory(memory_get_peak_usage(true)) . ' ' . gethostname());
        });

\Illuminate\Support\Facades\Queue::after(function (\Illuminate\Queue\Events\JobProcessed $job) {
            \Illuminate\Support\Facades\Log::info('After ' . json_encode($job->job->payload()) . ' Memory : ' .
                        \Symfony\Component\Console\Helper\Helper::formatMemory(memory_get_usage())
                        . ' real : ' . \Symfony\Component\Console\Helper\Helper::formatMemory(memory_get_usage(true))
                        . ' peak : ' . \Symfony\Component\Console\Helper\Helper::formatMemory(memory_get_peak_usage(true)) . ' ' . gethostname());
        });

I am running the worker using artisan queue:work --timeout 0 --tries 20 And scheduling it every second

$schedule->job(new \App\Jobs\TestBug())->everySecond()->withoutOverlapping(720)->onOneServer();

And the memory used during the job is not released

[2025-07-24 10:04:53] development.INFO: Before {"uuid":"b08f49b2-1c6b-4995-ba59-5bba6165a54a","displayName":"App\\Jobs\\TestBug","job":"Illuminate\\Queue\\CallQueuedHandler@call","maxTries":null,"maxExceptions":null,"failOnTimeout":false,"backoff":null,"timeout":null,"retryUntil":null,"data":{"commandName":"App\\Jobs\\TestBug","command":"O:16:\"App\\Jobs\\TestBug\":0:{}"},"createdAt":1753351001,"delay":null} Memory : 45.3 MiB real : 49.0 MiB peak : 49.0 MiB 62f8244a68b7  

  2025-07-24 10:04:53 App\Jobs\TestBug ....................................................................................................................................................................................................................... RUNNING
[2025-07-24 10:04:53] development.INFO: After {"uuid":"b08f49b2-1c6b-4995-ba59-5bba6165a54a","displayName":"App\\Jobs\\TestBug","job":"Illuminate\\Queue\\CallQueuedHandler@call","maxTries":null,"maxExceptions":null,"failOnTimeout":false,"backoff":null,"timeout":null,"retryUntil":null,"data":{"commandName":"App\\Jobs\\TestBug","command":"O:16:\"App\\Jobs\\TestBug\":0:{}"},"createdAt":1753351001,"delay":null} Memory : 94.1 MiB real : 96.7 MiB peak : 96.7 MiB 62f8244a68b7  

  2025-07-24 10:04:53 App\Jobs\TestBug .................................................................................................................................................................................................................. 21.57ms DONE
[2025-07-24 10:04:53] development.INFO: Before {"uuid":"454b175e-536c-47ee-a4a6-0f69306cba73","displayName":"App\\Jobs\\TestBug","job":"Illuminate\\Queue\\CallQueuedHandler@call","maxTries":null,"maxExceptions":null,"failOnTimeout":false,"backoff":null,"timeout":null,"retryUntil":null,"data":{"commandName":"App\\Jobs\\TestBug","command":"O:16:\"App\\Jobs\\TestBug\":0:{}"},"createdAt":1753351002,"delay":null} Memory : 94.1 MiB real : 96.7 MiB peak : 96.7 MiB 62f8244a68b7  

  2025-07-24 10:04:53 App\Jobs\TestBug ....................................................................................................................................................................................................................... RUNNING
[2025-07-24 10:04:53] development.INFO: After {"uuid":"454b175e-536c-47ee-a4a6-0f69306cba73","displayName":"App\\Jobs\\TestBug","job":"Illuminate\\Queue\\CallQueuedHandler@call","maxTries":null,"maxExceptions":null,"failOnTimeout":false,"backoff":null,"timeout":null,"retryUntil":null,"data":{"commandName":"App\\Jobs\\TestBug","command":"O:16:\"App\\Jobs\\TestBug\":0:{}"},"createdAt":1753351002,"delay":null} Memory : 94.1 MiB real : 96.7 MiB peak : 96.7 MiB 62f8244a68b7  

Once reached 97mb, it is never releasing it.

I even tried the attribute Scoped to prevent a singleton to being kept, but it didn't made any change.

The only way to prevent this memory leak is to unset $this->bla inside the handle method. Unsetting bla in the destructor does not change anything. The destructor is even called before the handle is called

Steps To Reproduce

see above