Paper: Scaling up OOD - A sysadmin's perspective

papers/simon_westersund/myst.yml

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+# See docs at: https://mystmd.org/guide/frontmatter
+version: 1
+extends: ../papers.yml
+project:
+  id: good-2025-simon_westersund
+  title: Scaling up OOD – A sysadmin's perspective
+  description: This paper explores how CSC – IT Center for Science analyzed performance issues and found ways to decrease the system load of their Open OnDemand instances.
+  keywords:
+    - Open OnDemand
+    - Passenger
+    - optimization
+    - user mapper
+  authors:
+    - name: Simon Westersund
+      email: simon.westersund+good25proceedings@csc.fi
+      orcid: 0009-0004-5656-729X
+      affiliations:
+        - CSC – IT Center for Science Ltd.
+      corresponding: true
+    - name: Robin Karlsson
+      orcid: 0009-0004-2824-5138
+      affiliations:
+        - CSC – IT Center for Science Ltd.
+      corresponding: false
+  abbreviations:
+    CPU: Central Processing Unit
+    HPC: High-Performance Computing
+    HTTP: Hypertext Transfer Protocol
+    N/o: Number of
+    OOD: Open OnDemand
+    pg.: page
+    PUN: Per-User Nginx
+    RAM: Random Access Memory
+    UID: User ID
+    vCPU: virtual Central Processing Unit
+    VM: Virtual Machine
+  error_rules:
+    - rule: doi-exists
+      severity: ignore
+      keys:
+        - cscfi
+        - OscUserMapping
+        - PhusionPassenger
+        - PassengerAnalyticsTiming
+        - PassengerPsCall
+        - PassengerHighestFdTimeout
+        - PassengerHighestFdFallback
+        - GreggSystemsPerformance
+        - PassengerLicense
+        - OodPackagingPr
+        - OodRelease3112
+        - OodRelease404
+        - SlurmPrivateData
+

papers/simon_westersund/sources.bib

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+@article{Hudak2018,
+    doi = {10.21105/joss.00622},
+    url = {https://doi.org/10.21105/joss.00622},
+    year = {2018},
+    publisher = {The Open Journal},
+    volume = {3},
+    number = {25},
+    pages = {622},
+    author = {Hudak, Dave and Johnson, Doug and Chalker, Alan and Nicklas, Jeremy and Franz, Eric and Dockendorf, Trey and McMichael, Brian L.},
+    title = {Open OnDemand: A web-based client portal for HPC centers},
+    journal = {Journal of Open Source Software}
+}
+
+@misc{cscfi,
+  author = {{CSC}},
+  title  = {CSC - IT Center for Science web site},
+  year   = {2025},
+  url    = {https://csc.fi/en/},
+  note   = {Accessed 29 Jul. 2025}
+}
+
+@misc{OscUserMapping,
+  author = {{Ohio Supercomputer Center}},
+  title  = {OOD 3.0 Setup User Mapping},
+  year   = {2024},
+  url    = {https://osc.github.io/ood-documentation/release-3.0/authentication/overview/map-user.html#setup-user-mapping},
+  note   = {Accessed 29 Jul. 2025}
+}
+
+@misc{PhusionPassenger,
+  author = {{Phusion B.V.}},
+  title  = {Phusion Passenger},
+  year   = {2025},
+  url    = {https://www.phusionpassenger.com/},
+  note   = {Accessed 29 Jul. 2025}
+}
+
+@misc{PassengerCloseFds,
+  author = {{phusion/passenger Github}},
+  title  = {Phusion Passenger closeAllFileDescriptors() call},
+  year   = {2018},
+  url    = {https://github.com/phusion/passenger/blob/6eaa52fc6c8a46719aefe721e81f8dca24357f1b/src/cxx_supportlib/ProcessManagement/Spawn.cpp#L134},
+  note   = {Accessed 29 Jul. 2025}
+}
+
+@misc{PassengerAnalyticsTiming,
+  author = {{phusion/passenger Github}},
+  title  = {Phusion Passenger analytics collection timing},
+  year   = {2016},
+  url    = {https://github.com/phusion/passenger/blob/f037e8f9a9c85636d3b4e99b241b0a440c20988b/src/agent/Core/ApplicationPool/Pool/AnalyticsCollection.cpp#L68-L72},
+  note   = {Accessed 29 Jul. 2025}
+}
+
+
+@misc{PassengerPsCall,
+  author = {{phusion/passenger Github}},
+  title  = {Phusion Passenger ps call},
+  year   = {2018},
+  url    = {https://github.com/phusion/passenger/blob/f037e8f9a9c85636d3b4e99b241b0a440c20988b/src/cxx_supportlib/SystemTools/ProcessMetricsCollector.h#L326-L333},
+  note   = {Accessed 29 Jul. 2025}
+}
+
+@misc{PassengerHighestFdTimeout,
+  author = {{phusion/passenger Github}},
+  title  = {Phusion Passenger highest open FD timeout},
+  year   = {2017},
+  url    = {https://github.com/phusion/passenger/blob/6eaa52fc6c8a46719aefe721e81f8dca24357f1b/src/cxx_supportlib/ProcessManagement/Utils.cpp#L357-L359},
+  note   = {Accessed 29 Jul. 2025}
+}
+
+@misc{PassengerHighestFdFallback,
+  author = {{phusion/passenger Github}},
+  title  = {Phusion Passenger highest open FD fallback},
+  year   = {2017},
+  url    = {https://github.com/phusion/passenger/blob/6eaa52fc6c8a46719aefe721e81f8dca24357f1b/src/cxx_supportlib/ProcessManagement/Utils.cpp#L176-L179},
+  note   = {Accessed 29 Jul. 2025}
+}
+
+@misc{PassengerLicense,
+  author = {{phusion/passenger Github}},
+  title  = {Phusion Passenger 6.0.20 License},
+  year   = {2017},
+  url    = {https://github.com/phusion/passenger/blob/release-6.0.20/LICENSE},
+  note   = {Accessed 29 Jul. 2025}
+}
+
+@misc{OodRelease3112,
+  author = {{OSC/ondemand Github}},
+  title  = {Ondemand v3.1.12 release},
+  year   = {2025},
+  url    = {https://github.com/OSC/ondemand/releases/tag/v3.1.12},
+  note   = {Accessed 29 Jul. 2025}
+}
+
+@misc{OodRelease404,
+  author = {{OSC/ondemand Github}},
+  title  = {Ondemand v4.0.4 release},
+  year   = {2025},
+  url    = {https://github.com/OSC/ondemand/releases/tag/v4.0.4},
+  note   = {Accessed 29 Jul. 2025}
+}
+
+@misc{OodPackagingPr,
+  author = {{OSC/ondemand-packaging Github}},
+  title  = {Ondemand-packaging pull request 300},
+  year   = {2025},
+  url    = {https://github.com/OSC/ondemand-packaging/pull/300},
+  note   = {Accessed 30 Jul. 2025}
+}
+
+@misc{SlurmPrivateData,
+  author = {{SchedMD}},
+  title  = {Slurm PrivateData configuration documentation},
+  year   = {2025},
+  url    = {https://slurm.schedmd.com/slurm.conf.html#OPT_PrivateData},
+  note   = {Accessed 29 Jul. 2025}
+}
+
+@book{GreggSystemsPerformance,
+  title     = {Systems Performance: Enterprise and the Cloud},
+  author    = {Gregg, Brendan},
+  year      = {2013},
+  publisher = {Pearson},
+  isbn      = {978-0-13-339009-4},
+  note      = {1st edition}
+}