# Strange memory usage in Jenkins

**URL:** https://community.jenkins.io/t/strange-memory-usage-in-jenkins/17431
**Category:** Using Jenkins
**Tags:** question, docker, controller
**Created:** [July 24, 2024, 6:11am UTC](https://community.jenkins.io/t/strange-memory-usage-in-jenkins/17431 "2024-07-24T06:11:16Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![Rajesh\_M](https://avatars.discourse-cdn.com/v4/letter/r/ebca7d/32.png) [@Rajesh\_M](https://community.jenkins.io/u/Rajesh_M)
#### Post date: [July 24, 2024, 6:11am UTC](https://community.jenkins.io/t/strange-memory-usage-in-jenkins/17431/1 "2024-07-24T06:11:16Z")

</div>

Hello,

We see some strange memory usage in our Jenkins controller.

 ![image](https://europe1.discourse-cdn.com/flex013/uploads/jenkins/original/2X/8/835132e2861af74200caf5d6fdc1738120871756.png)

As checked the heap dump in MAT analyzer, found below information.

 ![image](https://europe1.discourse-cdn.com/flex013/uploads/jenkins/original/2X/7/7657e6f08cd53f0af496d88b698aeb8b71d2b958.png)  
 ![image](https://europe1.discourse-cdn.com/flex013/uploads/jenkins/original/2X/8/869b82fac1cd15ee7086c2699cd3e2a1fea593fe.png)

from webAppClassLoader, we see below as possible leak

 ![image](https://europe1.discourse-cdn.com/flex013/uploads/jenkins/original/2X/7/71549b64b2b2dd93872840993e5c3ef49f679f95.png)

The CI is running in a Kubernetes cluster and env details are below,

```auto
Jenkins: 2.440.3
OS: Linux - 6.1.54-talos
Java: 11.0.22 - Eclipse Adoptium (OpenJDK 64-Bit Server VM)
---
ansicolor:1.0.4
antisamy-markup-formatter:162.v0e6ec0fcfcf6
apache-httpcomponents-client-4-api:4.5.14-208.v438351942757
asm-api:9.7-33.v4d23ef79fcc8
authentication-tokens:1.53.v1c90fd9191a_b_
badge:1.12
blueocean:1.27.12
blueocean-bitbucket-pipeline:1.27.12
blueocean-commons:1.27.12
blueocean-config:1.27.12
blueocean-core-js:1.27.12
blueocean-dashboard:1.27.12
blueocean-display-url:2.4.2
blueocean-events:1.27.12
blueocean-git-pipeline:1.27.12
blueocean-github-pipeline:1.27.12
blueocean-i18n:1.27.12
blueocean-jwt:1.27.12
blueocean-personalization:1.27.12
blueocean-pipeline-api-impl:1.27.12
blueocean-pipeline-editor:1.27.12
blueocean-pipeline-scm-api:1.27.12
blueocean-rest:1.27.12
blueocean-rest-impl:1.27.12
blueocean-web:1.27.12
bootstrap5-api:5.3.3-1
bouncycastle-api:2.30.1.77-225.v26ea_c9455fd9
branch-api:2.1169.va_f810c56e895
build-timeout:1.32
build-timestamp:1.0.3
build-with-parameters:76.v9382db_f78962
caffeine-api:3.1.8-133.v17b_1ff2e0599
checks-api:2.2.0
cloud-stats:336.v788e4055508b_
cloudbees-bitbucket-branch-source:886.v44cf5e4ecec5
cloudbees-disk-usage-simple:203.v3f46a_7462b_1a_
cloudbees-folder:6.901.vb_4c7a_da_75da_3
command-launcher:107.v773860566e2e
commons-lang3-api:3.13.0-62.v7d18e55f51e2
commons-text-api:1.11.0-109.vfe16c66636eb_
config-file-provider:973.vb_a_80ecb_9a_4d0
configuration-as-code:1810.v9b_c30a_249a_4c
credentials:1337.v60b_d7b_c7b_c9f
credentials-binding:677.vdc9d38cb_254d
description-setter:239.vd0a_6b_785f92d
display-url-api:2.204.vf6fddd8a_8b_e9
durable-task:555.v6802fe0f0b_82
echarts-api:5.5.0-1
embeddable-build-status:487.va_0ef04c898a_2
envinject:2.908.v66a_774b_31d93
envinject-api:1.199.v3ce31253ed13
favorite:2.208.v91d65b_7792a_c
font-awesome-api:6.5.2-1
gerrit-trigger:2.41.1
git:5.2.2
git-client:4.7.0
github:1.39.0
github-api:1.318-461.v7a_c09c9fa_d63
github-branch-source:1789.v5b_0c0cea_18c3
groovy:457.v99900cb_85593
gson-api:2.10.1-15.v0d99f670e0a_7
handy-uri-templates-2-api:2.1.8-30.v7e777411b_148
hashicorp-vault-pipeline:1.4
hashicorp-vault-plugin:368.v48134f694db_f
htmlpublisher:1.33
instance-identity:185.v303dc7c645f9
ionicons-api:74.v93d5eb_813d5f
jackson2-api:2.17.0-379.v02de8ec9f64c
jakarta-activation-api:2.1.3-1
jakarta-mail-api:2.1.3-1
javax-activation-api:1.2.0-6
javax-mail-api:1.6.2-9
jaxb:2.3.9-1
jdk-tool:73.vddf737284550
jenkins-design-language:1.27.12
jjwt-api:0.11.5-112.ve82dfb_224b_a_d
job-dsl:1.87
jobConfigHistory:2.31-rc1107.2354f08725a_8
joda-time-api:2.12.7-29.v5a_b_e3a_82269a_
jquery3-api:3.7.1-2
jsch:0.2.16-86.v42e010d9484b_
json-api:20240303-41.v94e11e6de726
json-path-api:2.9.0-58.v62e3e85b_a_655
junit:1265.v65b_14fa_f12f0
kubernetes:4231.vb_a_6b_8936497d
kubernetes-client-api:6.10.0-240.v57880ce8b_0b_2
kubernetes-credentials:0.11
kubernetes-credentials-provider:1.262.v2670ef7ea_0c5
ldap:725.v3cb_b_711b_1a_ef
mailer:472.vf7c289a_4b_420
mapdb-api:1.0.9-40.v58107308b_7a_7
mask-passwords:173.v6a_077a_291eb_5
matrix-auth:3.2.2
matrix-project:822.824.v14451b_c0fd42
metrics:4.2.21-449.v6960d7c54c69
mina-sshd-api-common:2.12.1-101.v85b_e08b_780dd
mina-sshd-api-core:2.12.1-101.v85b_e08b_780dd
monitoring:1.98.0
naginator:1.449.ve19751d70eb_0
nested-view:1.33
okhttp-api:4.11.0-172.vda_da_1feeb_c6e
openstack-cloud:2.65
parameterized-trigger:806.vf6fff3e28c3e
permissive-script-security:0.7
pipeline-build-step:540.vb_e8849e1a_b_d8
pipeline-graph-analysis:216.vfd8b_ece330ca_
pipeline-groovy-lib:710.v4b_94b_077a_808
pipeline-input-step:495.ve9c153f6067b_
pipeline-milestone-step:119.vdfdc43fc3b_9a_
pipeline-model-api:2.2198.v41dd8ef6dd56
pipeline-model-definition:2.2198.v41dd8ef6dd56
pipeline-model-extensions:2.2198.v41dd8ef6dd56
pipeline-rest-api:2.34
pipeline-stage-step:312.v8cd10304c27a_
pipeline-stage-tags-metadata:2.2198.v41dd8ef6dd56
pipeline-utility-steps:2.16.2
plain-credentials:182.v468b_97b_9dcb_8
plugin-util-api:4.1.0
popper2-api:2.11.6-4
postbuild-task:1.9
prism-api:1.29.0-15
prometheus:770.ve5e758db_606e
pubsub-light:1.18
rebuild:332.va_1ee476d8f6d
repo:1.16.0
resource-disposer:0.23
role-strategy:727.vd344b_eec783d
scm-api:690.vfc8b_54395023
script-security:1336.vf33a_a_9863911
sectioned-view:1.26
snakeyaml-api:2.2-111.vc6598e30cc65
sse-gateway:1.26
ssh-credentials:337.v395d2403ccd4
ssh-slaves:2.948.vb_8050d697fec
sshd:3.322.v159e91f6a_550
structs:337.v1b_04ea_4df7c8
subversion:1256.vee91953217b_6
timestamper:1.27
token-macro:400.v35420b_922dcb_
trilead-api:2.142.v748523a_76693
url-filter:1.3
variant:60.v7290fc0eb_b_cd
workflow-api:1311.v4250456a_e552
workflow-basic-steps:1058.vcb_fc1e3a_21a_9
workflow-cps:3894.3896.vca_2c931e7935
workflow-durable-task-step:1353.v1891a_b_01da_18
workflow-job:1400.v7fd111b_ec82f
workflow-multibranch:773.vc4fe1378f1d5
workflow-scm-step:427.v4ca_6512e7df1
workflow-step-api:657.v03b_e8115821b_
workflow-support:907.v6713a_ed8a_573
ws-cleanup:0.45

```

Please help to detect the leak happening here.

- Thanks