solid state drive based energy efficient cloud...
TRANSCRIPT
Solid State Drive Based Energy Efficient Cloud Storage
Jesus Ramos Alexis Jefferson Tiffany Da Silva SalmaRodriguez Jorge Cabrera
Florida International UniversityVISA Research Lab
CIS 4911 - Senior ProjectProject Mentor: Dr. Ming Zhao
December 4, 2012
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Outline
Background
Proposed Approach
Implementation
Web Interface
Evaluation
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Background
Current System
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Background
Proposed Approach
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Background
Feasibility Study
Disk-State Inc. from Inactive Disk-State Inc. from InactiveHDD-Inactive: +0 SSD-Inactive: +0
HDD-Idle: +4 SSD-Idle: +0.7
HDD-Active (Read): +7.2 SSD-Active (Read): +3.5
HDD-Active (Write): +7.6 SSD-Active (Write): +5.1
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Implementation
Cache Management Policy
LRU (Least Recently Used)Assumes that pages that aren’t used for a long time will notbe used in the near future
LFU (Least Frequently Used)Pages that are used less frequently should be evicted first
Changes to accommodate policies:
Replace hash table with a radix tree ordered by sectors
Use linked list to manage LRU and LFU schemes
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Implementation
Dynamic Spin-down Daemon
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Power Monitoring
Measuring Power
Watts Up? Pro
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Power Monitoring
Web Application
Purpose: display data from measurements
Important Features:
View current powerView past power tests
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Power Monitoring
View Past Power
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Power Monitoring
View Past Power
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Power Monitoring
View Current Power
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Power Monitoring
View Current Power
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Evaluation
Evaluation Setup
Collected power consumption measurements from a client and servernode
Three configurations:
BaselineDM-CacheDM-Cache with daemon modifications
Two types of benchmarks
Simple file operationsWorkload emulation
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Evaluation
IOZone: Micro Benchmarks
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Evaluation
Filebench: Synthetic Workload
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Conclusion
Conclusion
Leveraged existing client-side caching and added new cache evictionpolicies
Implemented disk spin-down daemon to exploit idle disk periods
Developed a web application to display power consumption graphs
Presented experiments showing the benefits of client-side SSD caching
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