Jenkins will occupy very little memory when it is first started, but as time goes by, Jenkins will occupy more and more memory, especially the memory in the G1 Old Gen area will not be released, and it will become larger and larger (this process (is slow), even if no one uses Jenkins on weekends, its memory will increase.
Hello @hellojukay and welcome back! 
Could you please provide some additional details to assist us in troubleshooting your issue?
Furthermore, if you could share a list of the plugins you have installed, it would be very helpful.
Lastly, do you have access to a more detailed memory occupation chart that could provide insights into how this memory is being utilized?
Your response will greatly assist us in diagnosing and resolving your concern. Thank you!
Jenkins: 2.375.1
OS: Linux - 5.4.0-139-generic
Java: 11.0.17 - Eclipse Adoptium (OpenJDK 64-Bit Server VM)
---
ace-editor:1.1
active-directory:2.29
allure-jenkins-plugin:2.30.3
ansible:1.1
ant:481.v7b_09e538fcca
antisamy-markup-formatter:155.v795fb_8702324
apache-httpcomponents-client-4-api:4.5.13-138.v4e7d9a_7b_a_e61
authentication-tokens:1.4
badge:1.9.1
blueocean:1.26.0
blueocean-autofavorite:1.2.5
blueocean-bitbucket-pipeline:1.26.0
blueocean-commons:1.26.0
blueocean-config:1.26.0
blueocean-core-js:1.26.0
blueocean-dashboard:1.26.0
blueocean-display-url:2.4.1
blueocean-events:1.26.0
blueocean-executor-info:1.26.0
blueocean-git-pipeline:1.26.0
blueocean-github-pipeline:1.26.0
blueocean-i18n:1.26.0
blueocean-jira:1.26.0
blueocean-jwt:1.26.0
blueocean-personalization:1.26.0
blueocean-pipeline-api-impl:1.26.0
blueocean-pipeline-editor:1.26.0
blueocean-pipeline-scm-api:1.26.0
blueocean-rest:1.26.0
blueocean-rest-impl:1.26.0
blueocean-web:1.26.0
bootstrap5-api:5.2.1-3
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caffeine-api:2.9.3-65.v6a_47d0f4d1fe
checks-api:1.8.0
cleansource:1.14.3-SNAPSHOT (private-06/09/2023 13:13-Administrator)
cloudbees-bitbucket-branch-source:791.vb_eea_a_476405b
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jakarta-mail-api:2.0.1-2
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ws-cleanup:0.44
I guess you have been using Kubernetes agents attached via WebSocket? There should only be one Channel or KubernetesComputer etc. per actual agent currently online, and I presume you are not running 11600+ builds simultaneously. Does MAT offer an option to find the GC root reference chain for one of these?
It is right click on the object and “show paths to GC roots” if I remember correctly. There is certainly a way in the UI and if all else fails you can use should be able to use the inbuilt query language.
