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Automatic I/O scheduler selection through online workload analysis
dc.contributor.author | Nou Castell, Ramon |
dc.contributor.author | Giralt, Jacobo |
dc.contributor.author | Cortés, Toni |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors |
dc.date.accessioned | 2013-05-31T09:33:22Z |
dc.date.available | 2013-05-31T09:33:22Z |
dc.date.created | 2013 |
dc.date.issued | 2013 |
dc.identifier.citation | Nou, R.; Giralt, J.; Cortés, A. Automatic I/O scheduler selection through online workload analysis. A: International Conference on Autonomic and Trusted Computing. "9th IEEE International Conference on Autonomic and Trusted Computing". Fukuoka: 2013, p. 431-438. |
dc.identifier.uri | http://hdl.handle.net/2117/19470 |
dc.description.abstract | I/O performance is a bottleneck for many workloads. The I/O scheduler plays an important role in it. It is typically configured once by the administrator and there is no selection that suits the system at every time. Every I/O scheduler has a different behavior depending on the workload and the device. We present a method to select automatically the most suitable I/O scheduler for the ongoing workload. This selection is done online, using a workload analysis method with small I/O traces, finding common I/O patterns. Our dynamic mechanism adapts automatically to one of the best schedulers, sometimes achieving improvements on I/O performance for heterogeneous workloads beyond those of any fixed configuration (up to 5%). This technique works with any application and device type (RAID, HDD, SSD), as long as we have a system parameter to tune. It does not need disk simulations or hardware models, which are normally unavailable. We evaluate it in different setups, and with different benchmarks. |
dc.format.extent | 8 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Informàtica::Sistemes operatius |
dc.subject.lcsh | Computer scheduling |
dc.subject.other | I/O scheduling |
dc.subject.other | Pattern matching |
dc.subject.other | Optimization |
dc.title | Automatic I/O scheduler selection through online workload analysis |
dc.type | Conference report |
dc.subject.lemac | Planificació de tasques (Informàtica) |
dc.contributor.group | Universitat Politècnica de Catalunya. CAP - Grup de Computació d'Altes Prestacions |
dc.identifier.doi | 10.1109/UIC-ATC.2012.12 |
dc.description.peerreviewed | Peer Reviewed |
dc.rights.access | Open Access |
local.identifier.drac | 11637260 |
dc.description.version | Postprint (author’s final draft) |
local.citation.author | Nou, R.; Giralt, J.; Cortés, A. |
local.citation.contributor | International Conference on Autonomic and Trusted Computing |
local.citation.pubplace | Fukuoka |
local.citation.publicationName | 9th IEEE International Conference on Autonomic and Trusted Computing |
local.citation.startingPage | 431 |
local.citation.endingPage | 438 |