运行程序出现cpu和内存持续上升趋势

**【缺陷描述】：请补充详细的缺陷问题现象描述**
我们编写的一个硬盘信息收集程序diskbooster在culinux（基于openeuler22.03定制）环境下出现cpu和内存占用持续上升的趋势
**一、缺陷信息**
我们的程序有周期查询硬盘healthinfo的任务，通过fork子进程调用外部程序读取，预期不会有
**【缺陷所属的os版本】（如openEuler-22.03-LTS，参考命令"cat /etc/os-release"结果）**
[root@localhost script]# cat /etc/os-release 
NAME="CULinux Enterprise Edition"
VERSION="3.0 (Telegram)"
ID="culinux"
ID_LIKE="openEuler"
VERSION_ID="3.0"
PRETTY_NAME="culinux 3.0 (Telegram)"
ANSI_COLOR="0;31"
PLATFORM_ID="platform:30"
CPE_NAME="cpe:/o:culinux:cu:3.0"

**【内核版本】（如kernel-5.10.0-60.138.0.165，参考命令"uname -r"结果）**
[root@localhost script]# uname -r
5.10.0-60.67.0.108.ule3.aarch64

**【缺陷所属软件及版本号】（如kernel-5.10.0-60.138.0.165，参考命令"rpm -q 包名"结果）**

**【环境信息】**
硬件信息
[root@culinux108 ~]# lscpu
Architecture:           aarch64
  CPU op-mode(s):       64-bit
  Byte Order:           Little Endian
CPU(s):                 96
  On-line CPU(s) list:  0-95
Vendor ID:              HiSilicon
  BIOS Vendor ID:       HiSilicon
  Model name:           Kunpeng-920
    BIOS Model name:    Hisilicon 1620
    Model:              0
    Thread(s) per core: 1
    Core(s) per socket: 48
    Socket(s):          2
    Stepping:           0x1
    Frequency boost:    disabled
    CPU max MHz:        2600.0000
    CPU min MHz:        200.0000
    BogoMIPS:           200.00
    Flags:              fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma dcpop asimdd
                        p asimdfhm ssbs
Caches (sum of all):    
  L1d:                  6 MiB (96 instances)
  L1i:                  6 MiB (96 instances)
  L2:                   48 MiB (96 instances)
  L3:                   96 MiB (4 instances)
NUMA:                   
  NUMA node(s):         4
  NUMA node0 CPU(s):    0-23
  NUMA node1 CPU(s):    24-47
  NUMA node2 CPU(s):    48-71
  NUMA node3 CPU(s):    72-95
Vulnerabilities:        
  Itlb multihit:        Not affected
  L1tf:                 Not affected
  Mds:                  Not affected
  Meltdown:             Not affected
  Mmio stale data:      Not affected
  Retbleed:             Not affected
  Spec store bypass:    Mitigation; Speculative Store Bypass disabled via prctl
  Spectre v1:           Mitigation; __user pointer sanitization
  Spectre v2:           Not affected
  Srbds:                Not affected
  Tsx async abort:      Not affected

软件信息
NA
网络信息
NA
**【问题复现步骤】：请描述具体的操作步骤**
启动程序运行，我们的程序有周期查询硬盘healthinfo的任务，通过fork子进程调用外部程序读取。一段时间后cpu和内存占用都表现出持续上升的趋势。
**【实际结果】**，请描述出问题的结果和影响
cpu和内存占用都有上升趋势
**【期望结果】**，请描述出期望的结果和影响
运行一段时间后cpu和内存占用保持平稳
**【其他相关附件信息】**
比如系统message日志/组件日志、dump信息、图片等

**【缺陷详情及分析指导参考链接】**

**二、缺陷分析结构反馈**
影响性分析说明：

缺陷严重等级:(Critical/High/Moderate/Low)

缺陷根因说明:

受影响版本排查(受影响/不受影响):
openEuler-20.03-LTS-SP4
openEuler-22.03-LTS-SP3
openEuler-22.03-LTS-SP4
openEuler-24.03-LTS
openEuler-24.03-LTS-SP1

修复是否涉及abi变化(是/否):
openEuler-20.03-LTS-SP4
openEuler-22.03-LTS-SP3
openEuler-22.03-LTS-SP4
openEuler-24.03-LTS
openEuler-24.03-LTS-SP1

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