Proceedings of the second edition of the ICN workshop on Information-centric networking - ICN '12, 2012
This paper bridges Information-Centric Networking (ICN), a novel form of networking centered arou... more This paper bridges Information-Centric Networking (ICN), a novel form of networking centered around information or content, and Redundancy Elimination (RE), a popular technique widely used to identify content with similar bytestream. The result is ICN-RE, the first ICN design that supports redundancy elimination. We show by means of numerical evaluations that ICN-RE improves bandwidth efficiency by 15-40% compared to vanilla
... Virtual trip lines for distributed privacy-preserving traffic monitoring. ... P., PADMANABHAN... more ... Virtual trip lines for distributed privacy-preserving traffic monitoring. ... P., PADMANABHAN, VN, AND RAMJEE, R. Nericell: rich monitoring of road and traffic conditions using mobile smartphones. ... [20] SAROIU, S., AND WOLMAN, A. Enabling new mobile applications with location ...
By offering high availability and elastic access to resources, third-party cloud infrastructures ... more By offering high availability and elastic access to resources, third-party cloud infrastructures such as Amazon AWS and Microsoft Azure are revolutionizing the way today's businesses operate. Un-fortunately, taking advantage of their benefits requires businesses to accept a number of serious risks to data security. Factors such as software bugs, operator errors and external attacks can all compro-mise the confidentiality of sensitive data on external clouds, making them vulnerable to unauthorized access by malicious parties. In this paper, we study and seek to improve the confidentiality of application data stored on third-party computing clouds. We pro-pose to identify and encrypt all functionally encryptable data, sen-sitive data that can be encrypted without limiting the functionality of the cloud service. Such data would only be stored on the cloud in an encrypted form, accessible only to users with the correct keys, thus ensuring its confidentiality against unintentional er...
Proceedings of the 2nd ACM Symposium on Cloud Computing - SOCC '11, 2011
By offering high availability and elastic access to resources, third-party cloud infrastructures ... more By offering high availability and elastic access to resources, third-party cloud infrastructures such as Amazon EC2 are revolutionizing the way today's businesses operate. Unfortunately, taking advantage of their benefits requires businesses to accept a number of serious risks to data security. Factors such as software bugs, operator errors and external attacks can all compromise the confidentiality of sensitive application data
Cloud service providers (CSP) of today operate multiple data centers, over which they provide res... more Cloud service providers (CSP) of today operate multiple data centers, over which they provide resilient infrastructure, data storage and compute services. The links between data centers have very high capacity, and are typically purchased by the CSPs using established billing practices, such as 95-thpercentile billing or average-usage billing. These links are used to serve both client traffic as well as CSP-specific bulk data traffic, such as backup jobs, etc. Past studies have shown a diurnal pattern of traffic over such links. However, CSPs pay for the peak bandwidth, which implies that they are under-utilizing the capacity for which they have paid for. We propose a scheduling framework that considers various classes of jobs that are encountered over such links, and propose GRESE, an algorithm that attempts to minimize overall bandwidth costs to the CSP, by leveraging the flexible nature of the deadlines of these bulk data jobs. We demonstrate the problem is not a simple extension of any well-known scheduling problems, and show how the GRESE algorithm is effective in curtailing CSP bandwidth costs.
Proceedings of the second edition of the ICN workshop on Information-centric networking - ICN '12, 2012
This paper bridges Information-Centric Networking (ICN), a novel form of networking centered arou... more This paper bridges Information-Centric Networking (ICN), a novel form of networking centered around information or content, and Redundancy Elimination (RE), a popular technique widely used to identify content with similar bytestream. The result is ICN-RE, the first ICN design that supports redundancy elimination. We show by means of numerical evaluations that ICN-RE improves bandwidth efficiency by 15-40% compared to vanilla
Proceedings of the 7th ACM european conference on Computer Systems - EuroSys '12, 2012
Enterprises are moving their IT infrastructure to cloud service providers with the goal of saving... more Enterprises are moving their IT infrastructure to cloud service providers with the goal of saving costs and simplifying management overhead. One of the critical services for any enterprise is its file system, where users require real-time access to files. Cloud service providers provide several building blocks such as Amazon EBS, or Azure Cache, each with very different pricing structures that differ on the basis of storage, access and bandwidth costs. Moving an entire file system to the cloud using such services is not cost-optimal if we rely on only one of these services. In this paper, we propose FCFS, a storage solution that drastically reduces the cost of operating a file system in the cloud. Our solution integrates multiple storage services and dynamically adapts the storage volume sizes of each service to provide a cost-efficient solution with provable performance bounds. Using real-world large scale data sets spanning a variety of work loads from an enterprise data center, we show that FCFS can reduce file storage and access costs in current cloud services by a factor of two or more, while allowing users to utilize the benefits of the various cloud storage services.
Proceedings of the second edition of the ICN workshop on Information-centric networking - ICN '12, 2012
This paper bridges Information-Centric Networking (ICN), a novel form of networking centered arou... more This paper bridges Information-Centric Networking (ICN), a novel form of networking centered around information or content, and Redundancy Elimination (RE), a popular technique widely used to identify content with similar bytestream. The result is ICN-RE, the first ICN design that supports redundancy elimination. We show by means of numerical evaluations that ICN-RE improves bandwidth efficiency by 15-40% compared to vanilla
... Virtual trip lines for distributed privacy-preserving traffic monitoring. ... P., PADMANABHAN... more ... Virtual trip lines for distributed privacy-preserving traffic monitoring. ... P., PADMANABHAN, VN, AND RAMJEE, R. Nericell: rich monitoring of road and traffic conditions using mobile smartphones. ... [20] SAROIU, S., AND WOLMAN, A. Enabling new mobile applications with location ...
By offering high availability and elastic access to resources, third-party cloud infrastructures ... more By offering high availability and elastic access to resources, third-party cloud infrastructures such as Amazon AWS and Microsoft Azure are revolutionizing the way today's businesses operate. Un-fortunately, taking advantage of their benefits requires businesses to accept a number of serious risks to data security. Factors such as software bugs, operator errors and external attacks can all compro-mise the confidentiality of sensitive data on external clouds, making them vulnerable to unauthorized access by malicious parties. In this paper, we study and seek to improve the confidentiality of application data stored on third-party computing clouds. We pro-pose to identify and encrypt all functionally encryptable data, sen-sitive data that can be encrypted without limiting the functionality of the cloud service. Such data would only be stored on the cloud in an encrypted form, accessible only to users with the correct keys, thus ensuring its confidentiality against unintentional er...
Proceedings of the 2nd ACM Symposium on Cloud Computing - SOCC '11, 2011
By offering high availability and elastic access to resources, third-party cloud infrastructures ... more By offering high availability and elastic access to resources, third-party cloud infrastructures such as Amazon EC2 are revolutionizing the way today's businesses operate. Unfortunately, taking advantage of their benefits requires businesses to accept a number of serious risks to data security. Factors such as software bugs, operator errors and external attacks can all compromise the confidentiality of sensitive application data
Cloud service providers (CSP) of today operate multiple data centers, over which they provide res... more Cloud service providers (CSP) of today operate multiple data centers, over which they provide resilient infrastructure, data storage and compute services. The links between data centers have very high capacity, and are typically purchased by the CSPs using established billing practices, such as 95-thpercentile billing or average-usage billing. These links are used to serve both client traffic as well as CSP-specific bulk data traffic, such as backup jobs, etc. Past studies have shown a diurnal pattern of traffic over such links. However, CSPs pay for the peak bandwidth, which implies that they are under-utilizing the capacity for which they have paid for. We propose a scheduling framework that considers various classes of jobs that are encountered over such links, and propose GRESE, an algorithm that attempts to minimize overall bandwidth costs to the CSP, by leveraging the flexible nature of the deadlines of these bulk data jobs. We demonstrate the problem is not a simple extension of any well-known scheduling problems, and show how the GRESE algorithm is effective in curtailing CSP bandwidth costs.
Proceedings of the second edition of the ICN workshop on Information-centric networking - ICN '12, 2012
This paper bridges Information-Centric Networking (ICN), a novel form of networking centered arou... more This paper bridges Information-Centric Networking (ICN), a novel form of networking centered around information or content, and Redundancy Elimination (RE), a popular technique widely used to identify content with similar bytestream. The result is ICN-RE, the first ICN design that supports redundancy elimination. We show by means of numerical evaluations that ICN-RE improves bandwidth efficiency by 15-40% compared to vanilla
Proceedings of the 7th ACM european conference on Computer Systems - EuroSys '12, 2012
Enterprises are moving their IT infrastructure to cloud service providers with the goal of saving... more Enterprises are moving their IT infrastructure to cloud service providers with the goal of saving costs and simplifying management overhead. One of the critical services for any enterprise is its file system, where users require real-time access to files. Cloud service providers provide several building blocks such as Amazon EBS, or Azure Cache, each with very different pricing structures that differ on the basis of storage, access and bandwidth costs. Moving an entire file system to the cloud using such services is not cost-optimal if we rely on only one of these services. In this paper, we propose FCFS, a storage solution that drastically reduces the cost of operating a file system in the cloud. Our solution integrates multiple storage services and dynamically adapts the storage volume sizes of each service to provide a cost-efficient solution with provable performance bounds. Using real-world large scale data sets spanning a variety of work loads from an enterprise data center, we show that FCFS can reduce file storage and access costs in current cloud services by a factor of two or more, while allowing users to utilize the benefits of the various cloud storage services.
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Papers by Krishna Puttaswamy