[Bug]: KVM dualtor may fail in test_pretest.py::test_disable_rsyslog_rate_limit for memory leak

[xwjiang-ms]

Issue Description

KVM dualtor may fail in test_pretest.py::test_disable_rsyslog_rate_limit for memory leak because config syslog rate-limit-feature enable would use more than 300M memory

Results you see

Before enable:

admin@vlab-06:~$ sudo monit status $HOSTNAME
Monit 5.20.0 uptime: 36m

System 'vlab-06'
  status                       Running
  monitoring status            Monitored
  monitoring mode              active
  on reboot                    start
  load average                 [0.23] [0.78] [0.79]
  cpu                          7.4%us 4.2%sy 0.3%wa
  memory usage                 3.0 GB [79.9%]
  swap usage                   0 B [0.0%]
  uptime                       37m
  boot time                    Tue, 03 Dec 2024 05:43:00
  data collected               Tue, 03 Dec 2024 06:19:34

After enable:

admin@vlab-06:~$ sudo monit status $HOSTNAME
Monit 5.20.0 uptime: 32m

System 'vlab-06'
  status                       Running
  monitoring status            Monitored
  monitoring mode              active
  on reboot                    start
  load average                 [1.59] [1.05] [0.83]
  cpu                          21.5%us 10.6%sy 2.8%wa
  memory usage                 3.5 GB [94.0%]
  swap usage                   0 B [0.0%]
  uptime                       33m
  boot time                    Tue, 03 Dec 2024 05:43:00
  data collected               Tue, 03 Dec 2024 06:15:33

May cause error:

2024 Dec  3 03:49:17.025361 vlab-06 ERR memory_threshold_check: Free memory 125816 is less then min free memory threshold 204800.0
 
2024 Dec  3 03:49:39.700813 vlab-06 INFO containerd[670]: time="2024-12-03T03:49:37.956483972Z" level=error msg="get state for 143b9e60c4ecaea7313b63362701155435e039876eac33bed00f5a750dbad1e0" error="context deadline exceeded: unknown"
2024 Dec  3 03:49:39.753047 vlab-06 INFO containerd[670]: time="2024-12-03T03:49:39.394693139Z" level=warning msg="unknown status" status=0

Results you expected to see

No errors

Is it platform specific

generic

Relevant log output

No response

Output of show version

No response

Attach files (if any)

No response