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Architectural support for efficient virtual memory on big-memory systems

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TitleInfo
Title
Architectural support for efficient virtual memory on big-memory systems
Name (type = personal)
NamePart (type = family)
Pham
NamePart (type = given)
Binh Quang
NamePart (type = date)
1983-
DisplayForm
Binh Quang Pham
Role
RoleTerm (authority = RULIB)
author
Name (type = personal)
NamePart (type = family)
Bhattacharjee
NamePart (type = given)
Abhishek
DisplayForm
Abhishek Bhattacharjee
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Advisory Committee
Role
RoleTerm (authority = RULIB)
chair
Name (type = personal)
NamePart (type = family)
Bianchini
NamePart (type = given)
Ricardo
DisplayForm
Ricardo Bianchini
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Nguyen
NamePart (type = given)
Thu
DisplayForm
Thu Nguyen
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Kim
NamePart (type = given)
Martha
DisplayForm
Martha Kim
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
outside member
Name (type = personal)
NamePart (type = family)
Loh
NamePart (type = given)
Gabriel
DisplayForm
Gabriel Loh
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
outside member
Name (type = corporate)
NamePart
Rutgers University
Role
RoleTerm (authority = RULIB)
degree grantor
Name (type = corporate)
NamePart
Graduate School - New Brunswick
Role
RoleTerm (authority = RULIB)
school
TypeOfResource
Text
Genre (authority = marcgt)
theses
OriginInfo
DateCreated (qualifier = exact)
2016
DateOther (qualifier = exact); (type = degree)
2016-01
DateIssued (encoding = w3cdtf); (qualifier = exact)
2016
Place
PlaceTerm (type = code)
xx
Language
LanguageTerm (authority = ISO639-2b); (type = code)
eng
Abstract (type = abstract)
Virtual memory is a powerful and ubiquitous abstraction for managing memory. How- ever, virtual memory suffers a performance penalty for these benefits, namely when translating program virtual addresses to system physical addresses. This overhead had been limited to 5-15% of system runtime by using a set of sophisticated hardware so- lutions, but has increased to 20-50% for many scenarios, including running workloads with large memory footprints and poor access locality or using deeper software stacks. My thesis aims to solve this problem so that the memory systems can continue to scale without being hamstrung by the virtual memory system. We observe that while operating systems (OS) and hypervisors have a rich set of components in allocating memory, the hardware address translation unit only maintains a rigid and limited view of this ecosystem. Therefore, we seek for patterns inherently present in the memory allocation mechanisms to guide us in designing a more intelligent address translation unit. First, we realize that OS memory allocators and program faulting sequence tend to produce contiguous or nearby mappings between virtual and physical pages. We propose Coalesced TLB and Clustered TLB designs to exploit these patterns accordingly. Once detected, the related mappings are stored in a single TLB entry to increase the TLB's reach. Our designs help reduce TLB misses substantially and improve performance as a result. Second, we see that there are often tradeoffs between reducing address translation overheard and improving resource consolidation in virtualized environments. For exam- ple, large pages are often used to mitigate the high cost of two-dimensional page walks, but hypervisors usually break large pages into small pages for easier sharing guests memory. When that happens, the majority of those small pages still remain aligned. Based on this observation, we propose a speculative TLB technique to regain almost all performance loss caused by breaking large pages while running highly consolidated virtualized systems.
Subject (authority = RUETD)
Topic
Computer Science
Subject (authority = ETD-LCSH)
Topic
Virtual storage (Computer science)
Subject (authority = ETD-LCSH)
Topic
Computer storage devices
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
Identifier
ETD_6908
PhysicalDescription
Form (authority = gmd)
electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
1 online resource (xvii, 116 p. : ill.)
Note (type = degree)
Ph.D.
Note (type = bibliography)
Includes bibliographical references
Note (type = statement of responsibility)
by Binh Quang Pham
RelatedItem (type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier (type = local)
rucore19991600001
Location
PhysicalLocation (authority = marcorg); (displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier (type = doi)
doi:10.7282/T3125VQR
Genre (authority = ExL-Esploro)
ETD doctoral
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Rights

RightsDeclaration (ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder (type = personal)
Name
FamilyName
Pham
GivenName
Binh
MiddleName
Quang
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2015-12-14 09:08:25
AssociatedEntity
Name
Binh Pham
Role
Copyright holder
Affiliation
Rutgers University. Graduate School - New Brunswick
AssociatedObject
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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Technical

RULTechMD (ID = TECHNICAL1)
ContentModel
ETD
OperatingSystem (VERSION = 5.1)
windows xp
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