IORM: Hierarchical I/O Governance for Thousands of Consolidated Databases on Oracle Exadata
Summary: IORM is a database-aware storage scheduler governing I/O across thousands of consolidated Oracle tenants. Semantic tags and compositional hierarchical shares/limits coordinate PMEM, flash, disk, and cache placement, sharply reducing noisy-neighbor tail latency. (summarized by gpt-5.6-luna on Aug 28 2026)
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Authors
- 1. Rajarshi Chowdhury (Oracle America Inc)
- 2. Akshay Shah (Oracle America Inc)
- 3. Zakaria Alrmaih (Oracle America Inc)
- 4. Chenhao Guo (Oracle America Inc)
- 5. Anubhav Singh (Oracle America Inc)
- 6. Sue Lee (Oracle America Inc)
BibTeX Citation
@article{chowdhury_vldb26,
title = {{IORM: Hierarchical I/O Governance for Thousands of Consolidated Databases on Oracle Exadata}},
author = {Chowdhury, Rajarshi and Shah, Akshay and Alrmaih, Zakaria and Guo, Chenhao and Singh, Anubhav and Lee, Sue},
journal = {PVLDB},
series = {{VLDB} '26},
volume = {19},
number = {12},
pages = {4440--4452},
doi = {10.14778/3827998.3828044},
url = {https://doi.org/10.14778/3827998.3828044},
year = {2026}
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