php-fpm 8.4.4 high cpu usage #17806

jostreff · 2025-02-14T19:06:24Z

Description

The following code:

Resulted in this output:

But I expected this output instead:

PHP Version

PHP 8.4.4

Operating System

FreeBSD 14.2-STABLE stable/14-n270410-720d25547745 GENERIC amd64

The text was updated successfully, but these errors were encountered:

devnexen · 2025-02-14T19:12:55Z

Hi. We might need more context ; e.g. pool configuration, what kind of web application could it be, was cpu usage significantly lower with previous php releases .. etc ...

jostreff · 2025-02-14T19:18:37Z

php.ini:
[opcache]
opcache.enable=1
opcache.enable_cli=1
opcache.interned_strings_buffer=128
opcache.max_accelerated_files=20000
opcache.save_comments=1
opcache.jit=1235
opcache.revalidate_freq=0
opcache.validate_timestamps=1
opcache.max_accelerated_files=10000
opcache.memory_consumption=192
opcache.max_wasted_percentage=10
opcache.interned_strings_buffer=16
opcache.fast_shutdown=1
opcache.jit_buffer_size=500000000

and php-fpm pool:

pm.status_path = /fpm-status
slowlog = log/$pool.log.slow
security.limit_extensions = .php .php3 .php4 .php5 .php7 .php8
php_admin_value[upload_max_filesize] = 5M
php_admin_value[error_reporting] = E_ALL & ~E_NOTICE & ~E_WARNING & ~E_STRICT & ~E_DEPRECATED
php_admin_value[mysqli.allow_local_infile] = 1

pm = dynamic
pm.max_children = 16
pm.start_servers = 2
pm.min_spare_servers = 2
pm.max_spare_servers = 5
pm.max_requests = 1000
pm.process_idle_timeout = 60s
rlimit_files = 131072
rlimit_core = unlimited
catch_workers_output = yes

devnexen · 2025-02-14T19:26:23Z

Thanks.

was cpu usage significantly lower with previous php releases

The reason I ask, often this kind of report comes from major migrations e.g. from 8.2 to 8.4 when behavior differences could be witnessed.

jostreff · 2025-02-14T19:49:24Z

i'm experiencing issues since 8.3 that was the reason to try 8.4 and it performs like that since that moment. Only way to lower cpu usage is just restart service via service php_fpm restart.

jostreff · 2025-02-14T19:52:39Z

My big issue is that I don't know ideas how to debug which php code mades this high php-fpm cpu usage. Typically when there is problem I see more then 8 php-fpm processes consuming 100% of cpu. Good news is that machine has 12 cpu cores ...

jostreff · 2025-02-14T19:53:58Z

devnexen · 2025-02-14T19:54:35Z

Eventually, are fpm logs giving any clue ?

jostreff · 2025-02-14T20:00:47Z

[14-Feb-2025 21:12:03] NOTICE: ready to handle connections
[14-Feb-2025 21:49:11] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 8 children, there are 0 idle, and 10 total children
[14-Feb-2025 21:49:12] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 16 children, there are 0 idle, and 12 total children
[14-Feb-2025 21:52:49] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 8 children, there are 0 idle, and 10 total children
[14-Feb-2025 21:52:50] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 16 children, there are 0 idle, and 12 total children
[14-Feb-2025 21:52:51] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 14 total children
[14-Feb-2025 21:52:52] WARNING: [pool www] server reached pm.max_children setting (16), consider raising it
[14-Feb-2025 21:53:00] WARNING: [pool www] server reached pm.max_children setting (16), consider raising it```

since last restart

devnexen · 2025-02-14T20:06:58Z

I see... did you try to adjust the pool settings ? e.g. pm.start_servers, pm.max_spare_servers, pm.max_children ... as advised in the logs.

jostreff · 2025-02-14T20:27:30Z

Changed pool settings to:
pm = ondemand
pm.max_children = 16
pm.start_servers = 48 ( 4x12core )
pm.min_spare_servers = 24 ( 2x12core )
pm.max_spare_servers = 48 ( =pm.start_servers )
pm.max_requests = 200
pm.process_idle_timeout = 10s

will wait to see...

jostreff · 2025-02-15T12:23:18Z

almost identical situation after reboot of the machine.

devnexen · 2025-02-15T12:34:23Z

Would it be possible to profile your web app ? e.g. pmcstat is able to do it on a cpu cycles level pcmstat -O php-sample.dat -P cycles -T -p <php process ID> might give further clues.

bukka · 2025-02-24T22:07:20Z

I would guess it won't be related to FPM but the actual execution. Profiling might help with that.

Try to also comment out pm.max_requests = 200 or set it very high which can lead to too many unnecessary restarts ...

github-actions · 2025-03-11T00:09:02Z

No feedback was provided. The issue is being suspended because we assume that you are no longer experiencing the problem. If this is not the case and you are able to provide the information that was requested earlier, please do so. Thank you.

grisha2217 · 2025-03-13T11:44:48Z

Same problem on production server
I compared 2 configs

/usr/bin/php8.3 -i > php83.txt
/usr/bin/php8.4 -i > php84.txt
diff php83.txt php84.txt | less

OUTPUT:
Version & Build Information
PHP Version:
8.3: 8.3.17
8.4: 8.4.4
Build Date:
8.3: Mar 10 2025 15:24:50
8.4: Mar 9 2025 17:05:03
Configuration Files & Directories
php.ini Location:
PHP 8.3 uses: /etc/php/8.3/cli/php.ini
PHP 8.4 uses: /etc/php/8.4/cli/php.ini
Additional .ini Files Parsed:
Almost the same list except PHP 8.4 includes a new file (25-memcached.ini) that isn’t in PHP 8.3.
Extension Directory:
8.3: /usr/lib/php/20230831
8.4: /usr/lib/php/20240924
Core API & Engine Changes
PHP API / Extension Build:
Updated from API20230831 to API20240924.
Zend Engine:
8.3: Zend Engine v4.3.17 with OPcache v8.3.17
8.4: Zend Engine v4.4.4 with OPcache v8.4.4
Output Formatting Changes
Syntax Highlighting:
In PHP 8.3, highlight colors are output using tags.
In PHP 8.4, these are output using tags.
Specific Directive & Extension Differences
FFI Setting:
ffi.enable changed from preload in 8.3 to On in 8.4.
libmagic:
Version changed slightly from 543 to 545.
IMAP Extension:
PHP 8.4 now shows an “IMAP extension Version => 1.0.3” entry.
Memcached Extension:
PHP 8.4 includes a detailed block showing memcached settings and support (e.g. serializer, compression settings).
MySQL Native Driver (mysqlnd):
Updated from version 8.3.17 to 8.4.4 in several places.
PostgreSQL Settings:
pgsql.auto_reset_persistent changed from On to Off.
Session Settings:
session.sid_bits_per_character changes from 5 to 4.
session.sid_length changes from 26 to 32.
OPcache JIT Buffer:
opcache.jit_buffer_size has been reduced from 128M to 64M.
Miscellaneous
Zip Version:
Updated from 1.22.3 to 1.22.4.
CLI Binary Reference:
The underscore variable ($SERVER['']) now reflects the PHP 8.4 binary (/usr/bin/php8.4) instead of PHP 8.3.
Timing Values:
Slight differences in REQUEST_TIME_FLOAT and REQUEST_TIME reflecting the moment the CLI started.

devnexen · 2025-03-13T18:07:00Z

Same problem on production server I compared 2 configs

/usr/bin/php8.3 -i > php83.txt /usr/bin/php8.4 -i > php84.txt diff php83.txt php84.txt | less

OUTPUT: Version & Build Information PHP Version: 8.3: 8.3.17 8.4: 8.4.4 Build Date: 8.3: Mar 10 2025 15:24:50 8.4: Mar 9 2025 17:05:03 Configuration Files & Directories php.ini Location: PHP 8.3 uses: /etc/php/8.3/cli/php.ini PHP 8.4 uses: /etc/php/8.4/cli/php.ini Additional .ini Files Parsed: Almost the same list except PHP 8.4 includes a new file (25-memcached.ini) that isn’t in PHP 8.3. Extension Directory: 8.3: /usr/lib/php/20230831 8.4: /usr/lib/php/20240924 Core API & Engine Changes PHP API / Extension Build: Updated from API20230831 to API20240924. Zend Engine: 8.3: Zend Engine v4.3.17 with OPcache v8.3.17 8.4: Zend Engine v4.4.4 with OPcache v8.4.4 Output Formatting Changes Syntax Highlighting: In PHP 8.3, highlight colors are output using tags. In PHP 8.4, these are output using tags. Specific Directive & Extension Differences FFI Setting: ffi.enable changed from preload in 8.3 to On in 8.4. libmagic: Version changed slightly from 543 to 545. IMAP Extension: PHP 8.4 now shows an “IMAP extension Version => 1.0.3” entry. Memcached Extension: PHP 8.4 includes a detailed block showing memcached settings and support (e.g. serializer, compression settings). MySQL Native Driver (mysqlnd): Updated from version 8.3.17 to 8.4.4 in several places. PostgreSQL Settings: pgsql.auto_reset_persistent changed from On to Off. Session Settings: session.sid_bits_per_character changes from 5 to 4. session.sid_length changes from 26 to 32. OPcache JIT Buffer: opcache.jit_buffer_size has been reduced from 128M to 64M. Miscellaneous Zip Version: Updated from 1.22.3 to 1.22.4. CLI Binary Reference: The underscore variable ($SERVER['']) now reflects the PHP 8.4 binary (/usr/bin/php8.4) instead of PHP 8.3. Timing Values: Slight differences in REQUEST_TIME_FLOAT and REQUEST_TIME reflecting the moment the CLI started.

Hi @grisha2217, not entirely sure it is "kind of the same" here.
Is disabling memcached, for example, for a while and restesting a possibility ?

Nations112 · 2025-03-30T17:12:57Z

Same problem after update from 8.3...
I have a PHP pool for each project. With this problem, all pools are using the processor. Restarting PHP helps.

boserup · 2025-05-28T12:59:34Z

We are also noticing similar issues after upgrading to the php:8.4.7-fpm tag in Docker - we moved from php:8.3.17-fpm before. So I don't think this is isolated to FreeBSD. As with OP, we also have Memcached enabled, however it is the AWS variant: https://github.com/awslabs/aws-elasticache-cluster-client-memcached-for-php

We use the following extensions: sockets intl zip pdo pdo_mysql pcntl gd exif bcmath mbstring curl sqlsrv pdo_sqlsrv opcache + memcached.

We also saw an increase in memory usage.

nbb-content · 2025-06-02T08:17:09Z

+1
We are also noticed similar issues after upgrading from php:8.4.6-fpm to the php:8.4.7-fpm tag in Docker. Jobs got killed due to using 100% CPU, when they were fine before without any issues.

boserup · 2025-06-06T13:16:30Z

In a QA environment we experienced the issue again on php:8.4.7-fpm inside an AWS ECS Fargate container. I managed to gather some intersting metrics @devnexen

Running uptime tells me the container has been running for just over 7 and a half hours - keep this in mind for later.
Here is the command output:

12:44:55 up  7:38,  0 user,  load average: 2.07, 2.12, 2.09

In order to give some background about what is running inside the container, I can share it is running the scheduling part of a Laravel-based application. The container is periodically spawing a PHP process with php artisan schedule:run. This process will then for every scheduled action spawn a new background process: /usr/local/bin/php artisan <command name parameter>.
There is thus no HTTP-traffic to the container.

Running htop shows only two of these background PHP processes running for almost 6 and 7 hours. Everything else appears to have ran as expected.

I sampled a few of the processes running on the machine.

8796 is the scheduled invocation php artisan schedule:run
3920 and 5109 are processes spawned by a previously running instance of php artisan schedule:run

For 3920 and 5109 I notice nonvoluntary_ctxt_switches is very high.

Attempts to strace -f -p <pid> the hung PHP processes produce no output, maybe indicating the process is stuck in a blocking syscall? I think this supports the theory that JIT is the culprit, as opcache.enable_cli is true in this application.
Sadly inspecting kernel operations are unsupported or restricted in ECS Fargate. However the process never recovers, and no userland activity occurs..

PID 8796

cat /proc/8796/cmdline
php artisan schedule:run

cat /proc/8796/status
Name:	php
Umask:	0022
State:	S (sleeping)
Tgid:	8796
Ngid:	0
Pid:	8796
PPid:	8795
TracerPid:	0
Uid:	0	0	0	0
Gid:	0	0	0	0
FDSize:	64
Groups:	0
NStgid:	8796
NSpid:	8796
NSpgid:	8796
NSsid:	8796
VmPeak:	  672548 kB
VmSize:	  672548 kB
VmLck:	       0 kB
VmPin:	       0 kB
VmHWM:	  125252 kB
VmRSS:	  125252 kB
RssAnon:	   31728 kB
RssFile:	   30280 kB
RssShmem:	   63244 kB
VmData:	   35100 kB
VmStk:	     140 kB
VmExe:	    5056 kB
VmLib:	  167696 kB
VmPTE:	     392 kB
VmSwap:	       0 kB
HugetlbPages:	       0 kB
CoreDumping:	0
THP_enabled:	1
Threads:	1
SigQ:	0/30446
SigPnd:	0000000000000000
ShdPnd:	0000000000000000
SigBlk:	0000000000000000
SigIgn:	0000000001001000
SigCgt:	0000000004004a07
CapInh:	0000000000000000
CapPrm:	00000000a80425fb
CapEff:	00000000a80425fb
CapBnd:	00000000a80425fb
CapAmb:	0000000000000000
NoNewPrivs:	0
Seccomp:	2
Seccomp_filters:	1
Speculation_Store_Bypass:	vulnerable
Cpus_allowed:	3
Cpus_allowed_list:	0-1
Mems_allowed:	00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000001
Mems_allowed_list:	0
voluntary_ctxt_switches:	744
nonvoluntary_ctxt_switches:	412

cat /proc/8796/syscall
230 0x0 0x0 0x7ffe3ca361f0 0x0 0x55a09be347c0 0x0 0x7ffe3ca361d8 0x7f8be09cd503

head -n 20 /proc/8796/maps
55a07aa00000-55a092a00000 rw-s 00000000 00:01 2564                       /dev/zero (deleted)
55a092a00000-55a09aa00000 r-xs 18000000 00:01 2564                       /dev/zero (deleted)
55a09aa00000-55a09ab4b000 r--p 00000000 103:00 1615091                   /usr/local/bin/php
55a09ac00000-55a09b0f0000 r-xp 00200000 103:00 1615091                   /usr/local/bin/php
55a09b200000-55a09bf1f000 r--p 00800000 103:00 1615091                   /usr/local/bin/php
55a09c12f000-55a09c200000 r--p 0152f000 103:00 1615091                   /usr/local/bin/php
55a09c200000-55a09c208000 rw-p 01600000 103:00 1615091                   /usr/local/bin/php
55a09c208000-55a09c22a000 rw-p 00000000 00:00 0
55a0c8fe0000-55a0c9626000 rw-p 00000000 00:00 0                          [heap]
7f8bd9e00000-7f8bdb200000 rw-p 00000000 00:00 0
7f8bdb395000-7f8bdb436000 rw-p 00000000 00:00 0
7f8bdb487000-7f8bdb4b7000 rw-p 00000000 00:00 0
7f8bdb4b7000-7f8bdb4b9000 r--p 00000000 103:00 1224686                   /usr/lib/x86_64-linux-gnu/libbz2.so.1.0.4
7f8bdb4b9000-7f8bdb4c6000 r-xp 00002000 103:00 1224686                   /usr/lib/x86_64-linux-gnu/libbz2.so.1.0.4
7f8bdb4c6000-7f8bdb4c8000 r--p 0000f000 103:00 1224686                   /usr/lib/x86_64-linux-gnu/libbz2.so.1.0.4
7f8bdb4c8000-7f8bdb4c9000 r--p 00010000 103:00 1224686                   /usr/lib/x86_64-linux-gnu/libbz2.so.1.0.4
7f8bdb4c9000-7f8bdb4ca000 rw-p 00011000 103:00 1224686                   /usr/lib/x86_64-linux-gnu/libbz2.so.1.0.4
7f8bdb4ca000-7f8bdb4ce000 r--p 00000000 103:00 1707041                   /usr/lib/x86_64-linux-gnu/libzip.so.4.0
7f8bdb4ce000-7f8bdb4e0000 r-xp 00004000 103:00 1707041                   /usr/lib/x86_64-linux-gnu/libzip.so.4.0
7f8bdb4e0000-7f8bdb4e5000 r--p 00016000 103:00 1707041                   /usr/lib/x86_64-linux-gnu/libzip.so.4.0

ls -l /proc/8796/fd
total 0
lr-x------ 1 root root 64 Jun  6 12:26 0 -> /dev/null
l-wx------ 1 root root 64 Jun  6 12:26 1 -> 'pipe:[30325]'
lrwx------ 1 root root 64 Jun  6 12:26 10 -> 'socket:[622667]'
lrwx------ 1 root root 64 Jun  6 12:26 11 -> 'socket:[622679]'
l-wx------ 1 root root 64 Jun  6 12:26 2 -> 'pipe:[30325]'
lrwx------ 1 root root 64 Jun  6 12:26 3 -> '/memfd:opcache_lock (deleted)'
lr-x------ 1 root root 64 Jun  6 12:26 4 -> /var/www/application/artisan
l-wx------ 1 root root 64 Jun  6 12:26 5 -> 'pipe:[30325]'
lrwx------ 1 root root 64 Jun  6 12:26 6 -> 'socket:[622093]'
lrwx------ 1 root root 64 Jun  6 12:26 7 -> 'socket:[622664]'
lrwx------ 1 root root 64 Jun  6 12:26 8 -> 'socket:[622665]'
lrwx------ 1 root root 64 Jun  6 12:26 9 -> 'socket:[622666]'

PID 3920

cat /proc/3920/cmdline
/usr/local/bin/php artisan <redacted command name>

cat /proc/3920/status
Name:	php
Umask:	0022
State:	R (running)
Tgid:	3920
Ngid:	0
Pid:	3920
PPid:	3919
TracerPid:	0
Uid:	0	0	0	0
Gid:	0	0	0	0
FDSize:	64
Groups:	0
NStgid:	3920
NSpid:	3920
NSpgid:	3888
NSsid:	3888
VmPeak:	  813864 kB
VmSize:	  761680 kB
VmLck:	       0 kB
VmPin:	       0 kB
VmHWM:	  145312 kB
VmRSS:	  145312 kB
RssAnon:	   45916 kB
RssFile:	   29892 kB
RssShmem:	   69504 kB
VmData:	   58824 kB
VmStk:	     140 kB
VmExe:	    5056 kB
VmLib:	   36624 kB
VmPTE:	     440 kB
VmSwap:	       0 kB
HugetlbPages:	       0 kB
CoreDumping:	0
THP_enabled:	1
Threads:	1
SigQ:	0/30446
SigPnd:	0000000000000000
ShdPnd:	0000000000000000
SigBlk:	0000000000000000
SigIgn:	0000000081001000
SigCgt:	0000000104004a07
CapInh:	0000000000000000
CapPrm:	00000000a80425fb
CapEff:	00000000a80425fb
CapBnd:	00000000a80425fb
CapAmb:	0000000000000000
NoNewPrivs:	0
Seccomp:	2
Seccomp_filters:	1
Speculation_Store_Bypass:	vulnerable
Cpus_allowed:	3
Cpus_allowed_list:	0-1
Mems_allowed:	00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000001
Mems_allowed_list:	0
voluntary_ctxt_switches:	170
nonvoluntary_ctxt_switches:	3810619

capsh --decode=0x$(cat /proc/3920/status | grep CapEff | awk '{print $2}')
0x00000000a80425fb=cap_chown,cap_dac_override,cap_fowner,cap_fsetid,cap_kill,cap_setgid,cap_setuid,cap_setpcap,cap_net_bind_service,cap_net_raw,cap_sys_chroot,cap_mknod,cap_audit_write,cap_setfcap

cat /proc/3920/syscall
running

head -n 20 /proc/3920/maps
558870000000-558890000000 rw-s 00000000 00:01 3096                       /dev/zero (deleted)
558890000000-55889014b000 r--p 00000000 103:00 1615091                   /usr/local/bin/php
558890200000-5588906f0000 r-xp 00200000 103:00 1615091                   /usr/local/bin/php
558890800000-55889151f000 r--p 00800000 103:00 1615091                   /usr/local/bin/php
55889172f000-558891800000 r--p 0152f000 103:00 1615091                   /usr/local/bin/php
558891800000-558891808000 rw-p 01600000 103:00 1615091                   /usr/local/bin/php
558891808000-55889182a000 rw-p 00000000 00:00 0
5588ca254000-5588ca9a4000 rw-p 00000000 00:00 0                          [heap]
7f2bdc000000-7f2bdc021000 rw-p 00000000 00:00 0
7f2bdc021000-7f2be0000000 ---p 00000000 00:00 0
7f2be0a00000-7f2be1600000 rw-p 00000000 00:00 0
7f2be17ff000-7f2be1800000 ---p 00000000 00:00 0
7f2be1800000-7f2be3600000 rw-p 00000000 00:00 0
7f2be370a000-7f2be37ab000 rw-p 00000000 00:00 0
7f2be37fc000-7f2be382c000 rw-p 00000000 00:00 0
7f2be382c000-7f2be382e000 r--p 00000000 103:00 1224686                   /usr/lib/x86_64-linux-gnu/libbz2.so.1.0.4
7f2be382e000-7f2be383b000 r-xp 00002000 103:00 1224686                   /usr/lib/x86_64-linux-gnu/libbz2.so.1.0.4
7f2be383b000-7f2be383d000 r--p 0000f000 103:00 1224686                   /usr/lib/x86_64-linux-gnu/libbz2.so.1.0.4
7f2be383d000-7f2be383e000 r--p 00010000 103:00 1224686                   /usr/lib/x86_64-linux-gnu/libbz2.so.1.0.4
7f2be383e000-7f2be383f000 rw-p 00011000 103:00 1224686                   /usr/lib/x86_64-linux-gnu/libbz2.so.1.0.4

ls -l /proc/3920/fd
total 0
lr-x------ 1 root root 64 Jun  6 12:21 0 -> /dev/null
l-wx------ 1 root root 64 Jun  6 12:21 1 -> /dev/null
lrwx------ 1 root root 64 Jun  6 12:21 10 -> 'socket:[197453]'
lrwx------ 1 root root 64 Jun  6 12:21 11 -> 'socket:[197971]'
lrwx------ 1 root root 64 Jun  6 12:21 12 -> 'socket:[197457]'
l-wx------ 1 root root 64 Jun  6 12:21 13 -> /dev/null
lrwx------ 1 root root 64 Jun  6 12:21 14 -> 'socket:[198726]'
lrwx------ 1 root root 64 Jun  6 12:21 15 -> 'socket:[198761]'
lrwx------ 1 root root 64 Jun  6 12:21 16 -> 'socket:[198762]'
lrwx------ 1 root root 64 Jun  6 12:21 17 -> 'socket:[198769]'
lrwx------ 1 root root 64 Jun  6 12:21 18 -> 'socket:[198770]'
l-wx------ 1 root root 64 Jun  6 12:21 2 -> /dev/null
lrwx------ 1 root root 64 Jun  6 12:21 3 -> '/memfd:opcache_lock (deleted)'
lr-x------ 1 root root 64 Jun  6 12:21 4 -> /var/www/application/artisan
l-wx------ 1 root root 64 Jun  6 12:21 5 -> 'pipe:[30325]'
lr-x------ 1 root root 64 Jun  6 12:21 6 -> /var/www/application/artisan
lrwx------ 1 root root 64 Jun  6 12:21 7 -> 'socket:[197450]'
lrwx------ 1 root root 64 Jun  6 12:21 8 -> 'socket:[197451]'
lrwx------ 1 root root 64 Jun  6 12:21 9 -> 'socket:[197452]'

PID 5109

cat /proc/5109/cmdline
/usr/local/bin/php artisan <redacted command name>

cat /proc/5109/status
Name:	php
Umask:	0022
State:	R (running)
Tgid:	5109
Ngid:	0
Pid:	5109
PPid:	5108
TracerPid:	0
Uid:	0	0	0	0
Gid:	0	0	0	0
FDSize:	64
Groups:	0
NStgid:	5109
NSpid:	5109
NSpgid:	5086
NSsid:	5086
VmPeak:	  813864 kB
VmSize:	  761680 kB
VmLck:	       0 kB
VmPin:	       0 kB
VmHWM:	  145540 kB
VmRSS:	  145540 kB
RssAnon:	   45916 kB
RssFile:	   30120 kB
RssShmem:	   69504 kB
VmData:	   58824 kB
VmStk:	     140 kB
VmExe:	    5056 kB
VmLib:	   36624 kB
VmPTE:	     436 kB
VmSwap:	       0 kB
HugetlbPages:	       0 kB
CoreDumping:	0
THP_enabled:	1
Threads:	1
SigQ:	0/30446
SigPnd:	0000000000000000
ShdPnd:	0000000000000000
SigBlk:	0000000000000000
SigIgn:	0000000081001000
SigCgt:	0000000104004a07
CapInh:	0000000000000000
CapPrm:	00000000a80425fb
CapEff:	00000000a80425fb
CapBnd:	00000000a80425fb
CapAmb:	0000000000000000
NoNewPrivs:	0
Seccomp:	2
Seccomp_filters:	1
Speculation_Store_Bypass:	vulnerable
Cpus_allowed:	3
Cpus_allowed_list:	0-1
Mems_allowed:	00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000001
Mems_allowed_list:	0
voluntary_ctxt_switches:	190
nonvoluntary_ctxt_switches:	3722472

capsh --decode=0x$(cat /proc/5109/status | grep CapEff | awk '{print $2}')
0x00000000a80425fb=cap_chown,cap_dac_override,cap_fowner,cap_fsetid,cap_kill,cap_setgid,cap_setuid,cap_setpcap,cap_net_bind_service,cap_net_raw,cap_sys_chroot,cap_mknod,cap_audit_write,cap_setfcap

cat /proc/5109/syscall
running

head -n 20 /proc/5109/maps
55c6db600000-55c6fb600000 rw-s 00000000 00:01 2300                       /dev/zero (deleted)
55c6fb600000-55c6fb74b000 r--p 00000000 103:00 1615091                   /usr/local/bin/php
55c6fb800000-55c6fbcf0000 r-xp 00200000 103:00 1615091                   /usr/local/bin/php
55c6fbe00000-55c6fcb1f000 r--p 00800000 103:00 1615091                   /usr/local/bin/php
55c6fcd2f000-55c6fce00000 r--p 0152f000 103:00 1615091                   /usr/local/bin/php
55c6fce00000-55c6fce08000 rw-p 01600000 103:00 1615091                   /usr/local/bin/php
55c6fce08000-55c6fce2a000 rw-p 00000000 00:00 0
55c732744000-55c732e94000 rw-p 00000000 00:00 0                          [heap]
7fe170000000-7fe170021000 rw-p 00000000 00:00 0
7fe170021000-7fe174000000 ---p 00000000 00:00 0
7fe174000000-7fe174c00000 rw-p 00000000 00:00 0
7fe174dff000-7fe174e00000 ---p 00000000 00:00 0
7fe174e00000-7fe176c00000 rw-p 00000000 00:00 0
7fe176d17000-7fe176db8000 rw-p 00000000 00:00 0
7fe176e09000-7fe176e39000 rw-p 00000000 00:00 0
7fe176e39000-7fe176e3b000 r--p 00000000 103:00 1224686                   /usr/lib/x86_64-linux-gnu/libbz2.so.1.0.4
7fe176e3b000-7fe176e48000 r-xp 00002000 103:00 1224686                   /usr/lib/x86_64-linux-gnu/libbz2.so.1.0.4
7fe176e48000-7fe176e4a000 r--p 0000f000 103:00 1224686                   /usr/lib/x86_64-linux-gnu/libbz2.so.1.0.4
7fe176e4a000-7fe176e4b000 r--p 00010000 103:00 1224686                   /usr/lib/x86_64-linux-gnu/libbz2.so.1.0.4
7fe176e4b000-7fe176e4c000 rw-p 00011000 103:00 1224686                   /usr/lib/x86_64-linux-gnu/libbz2.so.1.0.4

ls -l /proc/5109/fd
total 0
lr-x------ 1 root root 64 Jun  6 12:23 0 -> /dev/null
l-wx------ 1 root root 64 Jun  6 12:23 1 -> /dev/null
lrwx------ 1 root root 64 Jun  6 12:23 10 -> 'socket:[274886]'
lrwx------ 1 root root 64 Jun  6 12:23 11 -> 'socket:[274896]'
lrwx------ 1 root root 64 Jun  6 12:23 12 -> 'socket:[274909]'
l-wx------ 1 root root 64 Jun  6 12:23 13 -> /dev/null
lrwx------ 1 root root 64 Jun  6 12:23 14 -> 'socket:[271955]'
lrwx------ 1 root root 64 Jun  6 12:23 15 -> 'socket:[271983]'
lrwx------ 1 root root 64 Jun  6 12:23 16 -> 'socket:[271984]'
lrwx------ 1 root root 64 Jun  6 12:23 17 -> 'socket:[271987]'
lrwx------ 1 root root 64 Jun  6 12:23 18 -> 'socket:[271988]'
l-wx------ 1 root root 64 Jun  6 12:23 2 -> /dev/null
lrwx------ 1 root root 64 Jun  6 12:23 3 -> '/memfd:opcache_lock (deleted)'
lr-x------ 1 root root 64 Jun  6 12:23 4 -> /var/www/application/artisan
l-wx------ 1 root root 64 Jun  6 12:23 5 -> 'pipe:[30325]'
lr-x------ 1 root root 64 Jun  6 12:23 6 -> /var/www/application/artisan
lrwx------ 1 root root 64 Jun  6 12:23 7 -> 'socket:[274883]'
lrwx------ 1 root root 64 Jun  6 12:23 8 -> 'socket:[274884]'
lrwx------ 1 root root 64 Jun  6 12:23 9 -> 'socket:[274885]'

Configuration and environment

php -v
PHP 8.4.7 (cli) (built: May 21 2025 23:16:11) (NTS)
Copyright (c) The PHP Group
Built by https://github.com/docker-library/php
Zend Engine v4.4.7, Copyright (c) Zend Technologies
    with Zend OPcache v8.4.7, Copyright (c), by Zend Technologies

php -i | grep -E 'jit|opcache|cli'
/usr/local/etc/php/conf.d/docker-php-ext-opcache.ini,
auto_globals_jit => On => On
pcre.jit => On => On
pdo_sqlsrv.client_buffer_max_kb_size => 10240 => 10240
cli.pager => no value => no value
cli.prompt => \b \>  => \b \>
opcache.blacklist_filename => no value => no value
opcache.dups_fix => Off => Off
opcache.enable => On => On
opcache.enable_cli => On => On
opcache.enable_file_override => Off => Off
opcache.error_log => no value => no value
opcache.file_cache => /tmp/opcache => /tmp/opcache
opcache.file_cache_consistency_checks => On => On
opcache.file_cache_only => Off => Off
opcache.file_update_protection => 2 => 2
opcache.force_restart_timeout => 180 => 180
opcache.huge_code_pages => Off => Off
opcache.interned_strings_buffer => 64 => 64
opcache.jit => tracing => tracing
opcache.jit_bisect_limit => 0 => 0
opcache.jit_blacklist_root_trace => 16 => 16
opcache.jit_blacklist_side_trace => 8 => 8
opcache.jit_buffer_size => 128M => 128M
opcache.jit_debug => 0 => 0
opcache.jit_hot_func => 127 => 127
opcache.jit_hot_loop => 64 => 64
opcache.jit_hot_return => 8 => 8
opcache.jit_hot_side_exit => 8 => 8
opcache.jit_max_exit_counters => 8192 => 8192
opcache.jit_max_loop_unrolls => 8 => 8
opcache.jit_max_polymorphic_calls => 2 => 2
opcache.jit_max_recursive_calls => 2 => 2
opcache.jit_max_recursive_returns => 2 => 2
opcache.jit_max_root_traces => 1024 => 1024
opcache.jit_max_side_traces => 128 => 128
opcache.jit_max_trace_length => 1024 => 1024
opcache.jit_prof_threshold => 0.005 => 0.005
opcache.lockfile_path => /tmp => /tmp
opcache.log_verbosity_level => 1 => 1
opcache.max_accelerated_files => 30000 => 30000
opcache.max_file_size => 0 => 0
opcache.max_wasted_percentage => 10 => 10
opcache.memory_consumption => 384 => 384
opcache.opt_debug_level => 0 => 0
opcache.optimization_level => 0x7FFEBFFF => 0x7FFEBFFF
opcache.preferred_memory_model => no value => no value
opcache.preload => no value => no value
opcache.preload_user => no value => no value
opcache.protect_memory => Off => Off
opcache.record_warnings => Off => Off
opcache.restrict_api => no value => no value
opcache.revalidate_freq => 0 => 0
opcache.revalidate_path => Off => Off
opcache.save_comments => On => On
opcache.use_cwd => On => On
opcache.validate_permission => Off => Off
opcache.validate_root => Off => Off
opcache.validate_timestamps => Off => Off

php -m
[PHP Modules]
bcmath
Core
ctype
curl
date
dom
exif
fileinfo
filter
gd
hash
iconv
intl
json
libxml
mbstring
memcached
mysqlnd
openssl
pcntl
pcre
PDO
pdo_mysql
pdo_sqlite
pdo_sqlsrv
Phar
posix
random
readline
redis
Reflection
session
SimpleXML
sockets
sodium
SPL
sqlite3
sqlsrv
standard
tokenizer
xml
xmlreader
xmlwriter
Zend OPcache
zip
zlib

[Zend Modules]
Zend OPcache

uname -a
Linux ip-<redacted>2.eu-central-1.compute.internal 5.10.235-227.919.amzn2.x86_64 #1 SMP Sat Apr 5 16:59:05 UTC 2025 x86_64 GNU/Linux

cat /etc/os-release
PRETTY_NAME="Debian GNU/Linux 12 (bookworm)"
NAME="Debian GNU/Linux"
VERSION_ID="12"
VERSION="12 (bookworm)"
VERSION_CODENAME=bookworm
ID=debian
HOME_URL="https://www.debian.org/"
SUPPORT_URL="https://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"

cat /proc/sys/kernel/perf_event_paranoid
2

jostreff added Bug Status: Needs Triage labels Feb 14, 2025

devnexen added SAPI: fpm OS: FreeBSD labels Feb 14, 2025

cmb69 added Status: Needs Feedback and removed Status: Needs Triage labels Feb 14, 2025

github-actions bot added Status: Needs Triage and removed Status: Needs Feedback labels Feb 14, 2025

devnexen added Status: Needs Feedback and removed Status: Needs Triage labels Feb 14, 2025

github-actions bot added Status: Needs Triage and removed Status: Needs Feedback labels Feb 14, 2025

devnexen added Status: Needs Feedback and removed Status: Needs Triage labels Feb 16, 2025

github-actions bot closed this as completed Mar 11, 2025

github-actions bot removed the Status: Needs Feedback label Mar 11, 2025

devnexen reopened this Mar 11, 2025

php-fpm 8.4.4 high cpu usage #17806

php-fpm 8.4.4 high cpu usage #17806

Comments

jostreff commented Feb 14, 2025

Description

PHP Version

Operating System

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PID 8796

PID 3920

PID 5109

Configuration and environment

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