Name
Abstract | ||
|---|---|---|
I/O consolidation is a growing trend in production environments due to the increasing complexity in tuning and managing storage systems. A consequence of this trend is the need to serve multiple users/workloads simultaneously. It is imperative to make sure that these users are insulated from each other by visualization in order to meet any service level objective (SLO). This paper presents a 2-level scheduling framework that can be built on top of an existing storage utility. This framework uses a low-level feedback-driven request scheduler, called AVATAR, that is intended to meet the latency bounds determined by the SLO. The load imposed on AVATAR is regulated by a high-level rate controller, called SARC, to insulate the users from each other. In addition, SARC is work-conserving and tries to fairly distribute any spare bandwidth in the storage system to the different users. This framework naturally decouples rate and latency allocation. Using extensive I/O traces and a detailed storage simulator, we demonstrate that this 2-level framework can simultaneously meet the latency and throughput requirements imposed by an SLO, without requiring extensive knowledge of the underlying storage system. |
Year | DOI | Venue |
|---|---|---|
2005 | 10.1145/1168910.1168913 | ACM Transactions on Storage |
Keywords | DocType | Volume |
processor scheduling,storage system management,slo,i/o scheduling,virtualization,avatar,two-level framework,existing storage utility,fairness,quality of service,storage management,latency allocation,couple rate,performance isolation,decouples rate,service level objective,o consolidation,sarc,i-o consolidation,feedback-driven request scheduler,latency control,detailed storage simulator,o trace,2-level scheduling framework,high-level rate controller,2-level framework,throughput control,storage system,storage systems,underlying storage system,storage performance virtualization,two-level scheduling framework,service level | Conference | 2 |
Issue | ISSN | ISBN |
3 | 1526-7539 | 0-7695-2458-3 |
Citations | PageRank | References |
72 | 2.79 | 18 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Jianyong Zhang | 1 | 114 | 6.08 |
| Anand Sivasubramaniam | 2 | 4485 | 291.86 |
| Qian Wang | 3 | 184 | 12.32 |
| Alma Riska | 4 | 683 | 48.63 |
| Erik Riedel | 5 | 1037 | 142.99 |