Symfony consumers called with php-cli are forked and lead to memory issues

[Huluti]

What happened?

I'm facing an issue with FrankenPHP with Symfony consumers (messenger) on a project hosted at CleverCloud.

Running htop, it seems that even the workers (symfony messenger consumers) are forked and dispatched in several forks (several process). Is it intended? Any way to disable this behaviour?
Because they are consuming a lot of memory in this scenario and are leading to a complete crash of the webserver of the CleverCloud instance.

Did I miss something to enable? Or does this is on CleverCloud side (I was with them and for now they don't know)?

Build Type

Static binary

Worker Mode

Yes

Operating System

GNU/Linux

CPU Architecture

x86_64

PHP configuration

phpinfo() output

PHP Version: 8.5.4
SAPI: cli
Loaded php.ini: /home/bas/app_3efa874b-d958-47b8-8dbc-d7733d3d404e/php.ini
Extensions:
Array
(
    [0] => Core
    [1] => date
    [2] => lexbor
    [3] => uri
    [4] => pcre
    [5] => sqlite3
    [6] => zlib
    [7] => amqp
    [8] => apcu
    [9] => ast
    [10] => bcmath
    [11] => brotli
    [12] => bz2
    [13] => calendar
    [14] => ctype
    [15] => curl
    [16] => dba
    [17] => json
    [18] => SPL
    [19] => mbstring
    [20] => session
    [21] => fileinfo
    [22] => filter
    [23] => ftp
    [24] => gd
    [25] => gettext
    [26] => gmp
    [27] => hash
    [28] => iconv
    [29] => standard
    [30] => libxml
    [31] => exif
    [32] => dom
    [33] => igbinary
    [34] => imagick
    [35] => intl
    [36] => ldap
    [37] => lz4
    [38] => memcached
    [39] => mysqlnd
    [40] => mysqli
    [41] => Zend OPcache
    [42] => parallel
    [43] => pcntl
    [44] => PDO
    [45] => pdo_mysql
    [46] => pdo_pgsql
    [47] => pdo_sqlite
    [48] => pgsql
    [49] => openssl
    [50] => posix
    [51] => protobuf
    [52] => random
    [53] => readline
    [54] => redis
    [55] => Reflection
    [56] => shmop
    [57] => SimpleXML
    [58] => soap
    [59] => sockets
    [60] => sodium
    [61] => ssh2
    [62] => sysvmsg
    [63] => sysvsem
    [64] => sysvshm
    [65] => tidy
    [66] => tokenizer
    [67] => Phar
    [68] => xlswriter
    [69] => xml
    [70] => xmlreader
    [71] => xmlwriter
    [72] => xsl
    [73] => xz
    [74] => yaml
    [75] => zip
    [76] => zstd
)

Key settings:
memory_limit: 256M
max_execution_time: 0
upload_max_filesize: 2M
post_max_size: 8M
display_errors: 1

[henderkes]

Frankenphp itself doesn't do any forking, but you should prefer to run queue workers with php, rather than frankenphp php-cli for the time being.

[Huluti]

Thanks for the quick reply! I have passed the info to CleverCloud, will see what they decide.
Do you want me to close this issue or not?