Macro-modeling and energy efficiency studies of file management in embedded systems with flash memory

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dc.contributor.advisor Mahapatra , Rabi en_US
dc.contributor.committeeMember Bettati , Riccardo en_US
dc.creator Goyal , Nitesh en_US
dc.date.accessioned 2006 -08 -16T19 :02 :36Z
dc.date.accessioned 2014 -02 -19T19 :25 :21Z
dc.date.available 2006 -08 -16T19 :02 :36Z
dc.date.available 2014 -02 -19T19 :25 :21Z
dc.date.created 2005 -05 en_US
dc.date.issued 2006 -08 -16T19 :02 :36Z
dc.identifier.uri http : / /hdl .handle .net /1969 .1 /3766
dc.description.abstract Technological advancements in computer hardware and software have made embedded systems highly affordable and widely used . Consumers have ever increasing demands for powerful embedded devices such as cell phones , PDAs and media players . Such complex and feature -rich embedded devices are strictly limited by their battery life - time . Embedded systems typically are diskless and use flash for secondary storage due to their low power , persistent storage and small form factor needs . The energy efficiency of a processor and flash in an embedded system heavily depends on the choice of file system in use . To address this problem , it is necessary to provide sys - tem developers with energy profiles of file system activities and energy efficient file systems . In the first part of the thesis , a macro -model for the CRAMFS file system is established which characterizes the processor and flash energy consumption due to file system calls . This macro -model allows a system developer to estimate the energy consumed by CRAMFS without using an actual power setup . The second part of the thesis examines the effects of using non -volatile memory as a write -behind buffer to improve the energy efficiency of JFFS2 . Experimental results show that a 4KB write -behind buffer significantly reduces energy consumption by up to 2 -3 times for consecutive small writes . In addition , the write -behind buffer conserves flash space since transient data may never be written to flash . en_US
dc.format.extent 300640 bytes
dc.format.medium electronic en_US
dc.format.mimetype application /pdf
dc.language.iso en _US en_US
dc.publisher Texas A &M University en_US
dc.subject Embedded Flash File Systems en_US
dc.title Macro -modeling and energy efficiency studies of file management in embedded systems with flash memory en_US
dc.type Book en
dc.type.genre Electronic Thesis en_US
dc.type.material text en_US
dc.format.digitalOrigin born digital en_US

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Macro-modeling and energy efficiency studies of file management in embedded systems with flash memory. Available electronically from http : / /hdl .handle .net /1969 .1 /3766 .

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