[JENKINS-41722] Job folder loading performance scalability

I have a tree-like structure job layout as below:

I found somehow no matter what kind of authorization strategy I choose,

it's always taking longer time

to open "Project-A" cloudbees folder (contains 6 items)

than "Projects" folder (contains 34 items).

Below is my benchmark:

I'm expecting it should be faster to open "Project-A" folder because it needs to process permission and load only 6 items,

and slower to open "Projects" folder because it needs to process permissions and load for 34 items.

---
Originally reported by totoroliu, imported from: Job folder loading performance scalability

• status: Reopened
  
• priority: Major
  
• component(s): cloudbees-folder-plugin, core, role-strategy-plugin
  
• resolution: Unresolved
  
• votes: 1
  
• watchers: 3
  
• imported: 2025-11-24
  

I have a tree-like structure job layout as below:



 "Projects" Cloudbees folder  

 contains 34 subproject folder 

 

 subproject: "Project-A" Cloudbees folder 

 contains 6 branch folders ( 5 multibranch job folder and 1 cloudbees folder ) 

 

 

 multibranch-job1 

 contains 295 matrix jobs (75 x 2 matrix combination) 

 

 

 multibranch-job2 

 contains 317 matrix jobs (75 x 2 matrix combination) 

 

 

 multibranch-job3 

 contains 189 matrix jobs (75 x 2 matrix combination) 

 

 

 multibranch-job4 

 contains 15 matrix jobs (75 x 2 matrix combination) 

 

 

 multibranch-job5 

 contains 5 matrix jobs (75 x 2 matrix combination) 

 

 

 Cloudbees folder 

 contains 4 matrix jobs (75 x 2 matrix combination) 

 

 subproject: Project-B Cloudbees folder 

 .... 

 

 

 multibranch-job1 

 ... 

 

 

 ... 

 ... 

 

 ... 

 ... 

 ... 



I found somehow no matter what kind of authorization strategy I choose,

it's always taking longer time 

to open "Project-A" cloudbees folder (contains 6 items) 

than "Projects" folder (contains 34 items).


Below is my benchmark:



 

 Chrome 

 Chrome 

 Firefox 

 Firefox 

 Authorization Method 

 Open Projects Folder 

 Open Project-A Folder 

 Open Projects Folder 

 Open Project-A Folder 

 Anyone can do anything 

 2.10 sec 

 8.43 sec 

 5.99 sec 

 17.05 sec 

 Logged-in users can do anything 

 3.97 sec 

 9.94 sec 

 7.97 sec 

 20.06 sec 

 Initial default Role-based configuration - admin role 

 8.22 sec 

 14.54 sec 

 16.47 sec 

 28.55 sec 

 Role-based configuration - admin role with 119 Project roles 

 18.81 sec 

 31.95 sec 

 37.7 sec 

 65 



I'm expecting it should be faster to open "Project-A" folder because it needs to process permission and load only 6 items,

and slower to open "Projects" folder because it needs to process permissions and load for 34 items.

environment

```
Ubuntu 14.04.5 LTS

OpenJDK 8u111

Jenkins v2.32.1

Folders Plugin v5.16

Multi-Branch Project Plugin v0.5.1

Role-based Authorization Strategy v2.3.2

Intel Xeon E5-2630

24 GB RAM

500 GB SSD x 5 (RAID-5)

1897 jobs in total on the server – (1799 Matrix jobs)

Role Strategy Project Role: 119

Total Users: 464 users

Client tested on Ubuntu 16.04 (64-bit)

Chromium-browser 55.0.2883.87

Firefox 50.1.0
```

10 attachments

- [jenkins-open-folder.tar.gz](https://raw.githubusercontent.com/jenkinsci/attachments-from-jira-issues-core-cli/refs/heads/main/attachments/36132/jenkins-open-folder.tar.gz)
- [jenkins-startup-repeat01-0627.log](https://raw.githubusercontent.com/jenkinsci/attachments-from-jira-issues-core-cli/refs/heads/main/attachments/36115/jenkins-startup-repeat01-0627.log)
- [jenkins-startup-repeat02-0628.log](https://raw.githubusercontent.com/jenkinsci/attachments-from-jira-issues-core-cli/refs/heads/main/attachments/36116/jenkins-startup-repeat02-0628.log)
- [jenkins-startup-repeat03-0629.log](https://raw.githubusercontent.com/jenkinsci/attachments-from-jira-issues-core-cli/refs/heads/main/attachments/36117/jenkins-startup-repeat03-0629.log)
- [jenkins-startup-repeat04-0630.log](https://raw.githubusercontent.com/jenkinsci/attachments-from-jira-issues-core-cli/refs/heads/main/attachments/36118/jenkins-startup-repeat04-0630.log)
- [jenkins-startup-repeat05-0631.log](https://raw.githubusercontent.com/jenkinsci/attachments-from-jira-issues-core-cli/refs/heads/main/attachments/36119/jenkins-startup-repeat05-0631.log)
- [jenkins-startup.log.gz](https://raw.githubusercontent.com/jenkinsci/attachments-from-jira-issues-core-cli/refs/heads/main/attachments/36114/jenkins-startup.log.gz)
- [jenkins-startup.tar.gz](https://raw.githubusercontent.com/jenkinsci/attachments-from-jira-issues-core-cli/refs/heads/main/attachments/36131/jenkins-startup.tar.gz)
- [jenkins_open_AC_folder.log.tgz](https://raw.githubusercontent.com/jenkinsci/attachments-from-jira-issues-core-cli/refs/heads/main/attachments/36146/jenkins_open_AC_folder.log.tgz)
- [jenkins_open_AC_folder_Current_Thread.log](https://raw.githubusercontent.com/jenkinsci/attachments-from-jira-issues-core-cli/refs/heads/main/attachments/36147/jenkins_open_AC_folder_Current_Thread.log)