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Improving and complementing virtual memory using hardware techniques

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TitleInfo
Title
Improving and complementing virtual memory using hardware techniques
Name (type = personal)
NamePart (type = family)
Albuquerque Cox
NamePart (type = given)
Guilherme
NamePart (type = date)
1978-
DisplayForm
Guilherme Mota Cavalcanti de
Role
RoleTerm (authority = RULIB)
author
Name (type = personal)
NamePart (type = family)
Bhattacharjee
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Abhishek
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Abhishek Bhattacharjee
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Advisory Committee
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chair
Name (type = personal)
NamePart (type = family)
Ganapathy
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Vinod
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Vinod Ganapathy
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Advisory Committee
Role
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internal member
Name (type = personal)
NamePart (type = family)
Kremer
NamePart (type = given)
Ulrich
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Ulrich Kremer
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Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Lustig
NamePart (type = given)
Daniel
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Daniel Lustig
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Advisory Committee
Role
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outside member
Name (type = corporate)
NamePart
Rutgers University
Role
RoleTerm (authority = RULIB)
degree grantor
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NamePart
School of Graduate Studies
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school
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Text
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theses
OriginInfo
DateCreated (qualifier = exact)
2018
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2018-10
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2018
Place
PlaceTerm (type = code)
xx
Language
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eng
Abstract (type = abstract)
Virtual memory is a classic computer science abstraction and is ubiquitous in all scales of computing today. However, despite years of research, virtual memory faces critical performance and security challenges. This thesis aims to address these challenges. The first challenge we address is the growing performance overheads faced by virtual memory as workloads continue demanding ever-increasing amounts of memory. The key culprit of these overheads is address translation, the mechanism by which virtual memory translates a program's virtual addresses to physical addresses. Performing fast address translation requires the design of fast and efficient hardware translation lookaside buffer (TLB) caches. Unfortunately, TLBs struggle to perform efficiently for ``big data" workloads. This thesis proposes a range of hardware mechanisms to improve TLB performance. The second challenge we address pertains to the security mechanisms offered by the virtual memory abstraction through memory protection and process isolation. Despite their utility, protection/isolation are insufficient to avoid important classes of remote attacks. Attackers can corrupt the operating system and thereby gain control of the entire machine. Therefore, there is a need for security mechanisms complementary to those provided by virtual memory. We propose low-overhead mechanisms achieve this. Our approach is to build hardware that can snapshot physical memory in an efficient manner, so that we can enable faster/better memory forensics to enhance system security.

Both sets of studies highlight some important themes in this thesis. One unifying theme of our work is to build hardware mechanisms that are transparent to application developers and systems programmers. Another unifying theme is ease of implementation -- we deliberately use hardware mechanisms that require modest hardware modifications. In situations when the modifications are more substantial, we formally verify the correctness of our approach. Finally, we quantify the benefits of our approaches using not only software performance models (like most architecture studies), but also go beyond by quantifying real-system performance when possible.
Subject (authority = RUETD)
Topic
Computer Science
Subject (authority = ETD-LCSH)
Topic
Virtual storage (Computer science)
Subject (authority = ETD-LCSH)
Topic
Cloud computing
RelatedItem (type = host)
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Title
Rutgers University Electronic Theses and Dissertations
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ETD_9212
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electronic resource
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application/pdf
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text/xml
Extent
1 online resource (160 pages) : illustrations
Note (type = degree)
Ph.D.
Note (type = bibliography)
Includes bibliographical references
Note (type = statement of responsibility)
by Guilherme Mota Cavalcanti de Albuquerque Cox
RelatedItem (type = host)
TitleInfo
Title
School of Graduate Studies Electronic Theses and Dissertations
Identifier (type = local)
rucore10001600001
Location
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NjNbRU
Identifier (type = doi)
doi:10.7282/t3-m0cq-tt95
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
Mota Cavalcanti de Albuquerque Cox
GivenName
Guilherme
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2018-09-20 16:35:46
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Name
Guilherme Mota Cavalcanti de Albuquerque Cox
Role
Copyright holder
Affiliation
Rutgers University. School of Graduate Studies
AssociatedObject
Type
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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

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