About
**I/O shaping** in EOS is a cluster-wide mechanism that helps share storage bandwidth fairly across a whole instance. It continuously collects near-real-time I/O activity from all nodes and builds a global picture of who is reading and writing - grouped by user, group, or application. Using this global view, EOS can automatically apply scheduling and priority rules that decide how the available I/O capacity is shared.
Unlike local throttling on a single machine, global I/O shaping coordinates decisions across the entire system. This prevents one heavy consumer from slowing everyone else down and keeps latency stable when different workloads run at the same time. Administrators can prioritize critical workloads, guarantee minimum throughput for selected users, or limit overly aggressive activity, all while keeping overall throughput high. The result is more predictable performance and better sharing of storage resources without requiring changes in applications.
We will present a report on its current status and the technical aspects of its implementation.
00:00:00 Slide 1
00:00:31 Slide 2
00:01:26 Slide 3
00:01:44 Slide 4
00:02:30 Slide 5
00:03:23 Slide 6
00:04:09 Slide 7
00:06:18 Slide 8
00:06:53 Slide 9
The talk
Credits and licence
- Institution
- CERN
- Speaker
- Luis Antonio Obis Aparicio
- Year
- 2026
- Language
- English
- Source
- CERN
- Licence
- CERN, as CERN states it. CERN's terms
- Attribution
- © CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
- Who can watch
- CERN gives no rating. Invisible Network shows it to Teens profiles and older, judged from what the source says about it. How courses are placed