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内存泄露问题

### 问题描述
线上服务worker内存上涨非常快, 千万以上请求量后内存仍然在涨

### Swoole版本，PHP版本，以及操作系统版本信息
```
PHP 7.4.12 (cli) (built: Nov 11 2020 13:35:32) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0, Copyright (c) Zend Technologies
    with Zend OPcache v7.4.12, Copyright (c), by Zend Technologies
```
```
swoole
Swoole => enabled
Author => Swoole Team <team@swoole.com>
Version => 4.5.7
Built => Nov 11 2020 13:37:00
coroutine => enabled
epoll => enabled
eventfd => enabled
signalfd => enabled
cpu_affinity => enabled
spinlock => enabled
rwlock => enabled
openssl => OpenSSL 1.1.1h  22 Sep 2020
http2 => enabled
zlib => 1.2.7
mutex_timedlock => enabled
pthread_barrier => enabled
futex => enabled
async_redis => enabled

Directive => Local Value => Master Value
swoole.enable_coroutine => On => On
swoole.enable_library => On => On
swoole.enable_preemptive_scheduler => Off => Off
swoole.display_errors => On => On
swoole.use_shortname => On => On
swoole.unixsock_buffer_size => 8388608 => 8388608
```
```
centos 7.3
kernel 4.18.20
OpenSSL 1.1.1h  22 Sep 2020
```

### valgrind.log
```
$ USE_ZEND_ALLOC=0 valgrind --leak-check=full --show-leak-kinds=all --error-limit=no --log-file=valgrind.log php script.php

==58394== 24 bytes in 1 blocks are definitely lost in loss record 4,224 of 15,037
==58394==    at 0x4C27BE3: malloc (vg_replace_malloc.c:299)
==58394==    by 0x7E5BAF: zend_register_functions (zend_API.c:2297)
==58394==    by 0x7E6D65: do_register_internal_class (zend_API.c:2708)
==58394==    by 0x807FA1: zend_register_weakref_ce (zend_weakrefs.c:194)
==58394==    by 0x7F4BF6: zm_startup_core (zend_builtin_functions.c:313)
==58394==    by 0x7E4E44: zend_startup_module_ex (zend_API.c:1860)
==58394==    by 0x7E4EDB: zend_startup_module_zval (zend_API.c:1875)
==58394==    by 0x7F1802: zend_hash_apply (zend_hash.c:1812)
==58394==    by 0x7E5189: zend_startup_modules (zend_API.c:1986)
==58394==    by 0x7832E5: php_module_startup (main.c:2332)
==58394==    by 0x8640DC: php_cli_startup (php_cli.c:410)
==58394==    by 0x4627D3: main (php_cli.c:1326)
--
==58394== 24 bytes in 1 blocks are definitely lost in loss record 4,225 of 15,037
==58394==    at 0x4C27BE3: malloc (vg_replace_malloc.c:299)
==58394==    by 0x7B98C8: __zend_malloc (zend_alloc.c:2976)
==58394==    by 0x7C691E: zend_compile_params (zend_compile.c:5347)
==58394==    by 0x7CF21B: zend_compile_func_decl (zend_compile.c:6050)
==58394==    by 0x7C7DE4: zend_compile_expr (zend_compile.c:8716)
==58394==    by 0x7CAD89: zend_compile_args (zend_compile.c:3059)
==58394==    by 0x7CB197: zend_compile_call_common (zend_compile.c:3136)
==58394==    by 0x7CBABD: zend_compile_static_call (zend_compile.c:4032)
==58394==    by 0x7CAC30: zend_compile_var (zend_compile.c:8744)
==58394==    by 0x7C7D14: zend_compile_expr (zend_compile.c:8613)
==58394==    by 0x7CE2BA: zend_compile_stmt (zend_compile.c:8577)
==58394==    by 0x7CEFD6: zend_compile_stmt_list (zend_compile.c:5266)
--
==58394== 3,568 (3,168 direct, 400 indirect) bytes in 132 blocks are definitely lost in loss record 14,928 of 15,037
==58394==    at 0x4C27BE3: malloc (vg_replace_malloc.c:299)
==58394==    by 0x7B98C8: __zend_malloc (zend_alloc.c:2976)
==58394==    by 0x7C691E: zend_compile_params (zend_compile.c:5347)
==58394==    by 0x7CF21B: zend_compile_func_decl (zend_compile.c:6050)
==58394==    by 0x7CE5DB: zend_compile_stmt (zend_compile.c:8545)
==58394==    by 0x7CEFD6: zend_compile_stmt_list (zend_compile.c:5266)
==58394==    by 0x7CE43B: zend_compile_stmt (zend_compile.c:8489)
==58394==    by 0x7CFD25: zend_compile_class_decl (zend_compile.c:6477)
==58394==    by 0x7D14FE: zend_compile_top_stmt (zend_compile.c:8464)
==58394==    by 0x7D14D6: zend_compile_top_stmt (zend_compile.c:8453)
==58394==    by 0x7A8F52: zend_compile (zend_language_scanner.c:614)
==58394==    by 0x7AA807: compile_string (zend_language_scanner.c:779)

==58394== LEAK SUMMARY:
==58394==    definitely lost: 3,216 bytes in 134 blocks
==58394==    indirectly lost: 400 bytes in 12 blocks
==58394==      possibly lost: 2,947,178 bytes in 23,784 blocks
==58394==    still reachable: 1,834,952 bytes in 14,037 blocks
==58394==                       of which reachable via heuristic:
==58394==                         stdstring          : 34,756 bytes in 937 blocks
==58394==                         newarray           : 488 bytes in 1 blocks
==58394==         suppressed: 0 bytes in 0 blocks

```

```
请问以上这个是php自己本身的内存泄露吗, 和swoole有关系吗, 
但我这线上实际内存泄露很严重, 命令写的不对还是那里没弄对吗,
还是说我的php代码本身有些地方如static变量没处理好导致的内存泄露valgrind检测不出来?
```

发布于3年前 · 20 次浏览 · 来自提问