Evaluating the Effectiveness of REDCAP to Recover the Locality Missed by Today´s Linux Systems

Author

González-Férez, Pilar ; Piernas, Juan ; Cortes, Toni

Author_Institution

Univ. de Murcia, Murcia

fYear

2008

fDate

8-10 Sept. 2008

Firstpage

1

Lastpage

4

Abstract

In order to know how different conditions influence the behavior of the RAM Enhanced Disk Cache Project (RED-CAP), we have analyzed the impact of the file system and the REDCAP cache size. The results show that, for work-loads which exhibit some spatial locality the application time can be reduced by more than 80% for file systems that split the disk into block groups, while for those that do not use this division the reduction can be more than 55%. REDCAP has the same performance as a traditional system for those workloads with a random or sequential access pattern. The experiments also show that the cache size can determine the results, depending on the file system and the number of processes.

Keywords

Linux; cache storage; random-access storage; Linux systems; RAM Enhanced Disk Cache Project; REDCAP cache size; file system; sequential access pattern; spatial locality; Costs; Disk drives; File systems; Hard disks; Linux; Manufacturing; Prefetching; Random access memory; Read-write memory; Space technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Modeling, Analysis and Simulation of Computers and Telecommunication Systems, 2008. MASCOTS 2008. IEEE International Symposium on

Conference_Location

Baltimore, MD

ISSN

1526-7539

Print_ISBN

978-1-4244-2817-5

Electronic_ISBN

1526-7539

Type

conf

DOI

10.1109/MASCOT.2008.4770589

Filename

4770589