The Experts below are selected from a list of 24 Experts worldwide ranked by ideXlab platform

Kasidit Chanchio - One of the best experts on this subject based on the ideXlab platform.

  • Efficient Pre-Copy Live Migration of Virtual Machines for High Performance Computing in Cloud Computing Environments
    2018 3rd International Conference on Computer and Communication Systems (ICCCS), 2018
    Co-Authors: Kasidit Chanchio, Jumpol Yaothanee
    Abstract:

    Pre-copy live migration is the most popular migration mechanism implemented in most hypervisors. However, it is not suitable for Virtual Machines (VMs) running computation-intensive and memory-intensive workloads because its operational behaviors depend on a configuration parameter, namely the Maximum Tolerable Downtime. Although the default value of this parameter is good enough for normal web-based applications, it is too low for most HPC applications, which are computation-intensive and memoryintensive. Performing a migration with an inappropriate parameter may cause extensively long migration time or Downtime. Defining this parameter is nontrivial since application workloads are generally unpredictable. This difficulty also makes it hard for cloud management systems to operate VM live migration automatically. In this paper, we propose the Memory-bound Pre-copy Live Migration (MPLM) mechanism that performs VM live migration without requiring the Maximum Tolerable Downtime parameter. MPLM presents a new perspective of VM live migration, where the migration is performed based on the present state of VM computation without enforcing Downtime constraints. During live migration, MPLM separates memory pages into dirty and non-dirty sets and transmits them in a multiplexing manner. MPLM has been implemented in a modified version of the QEMU-KVM software. Experiments have been conducted to evaluate MPLM performances against those of the traditional pre-copy mechanism. We performed a number of live migrations of VMs running four OpenMP NAS Parallel Benchmark programs. Experimental results show that MPLM is more efficient and easier to use than the pre-copy mechanism.

  • Performance comparisons and data compression of time-bound live migration and pre-copy live migration of virtual machines
    2017 18th IEEE ACIS International Conference on Software Engineering Artificial Intelligence Networking and Parallel Distributed Computing (SNPD), 2017
    Co-Authors: Kasidit Chanchio, Phithak Thaenkaew
    Abstract:

    Pre-copy live migration is a popular virtual machine (VM) live migration mechanism that has been used in most hypervisors. In this mechanism, a key parameter, namely the Maximum Tolerable Downtime, is required for each migration. However, defining an appropriate value for this parameter is nontrivial, especially for the migration of a virtual machine running CPU-intensive and memory-intensive applications. If an inappropriate value is used, the migration may suffer poor performance. Time-bound Live Migration (TLM) is another live migration mechanism that was proposed to solve this problem. The TLM can operate automatically without the need for the Maximum Tolerable Downtime. Thus, the operational burden and performance penalty due to the configuration of the Maximum Tolerable Downtime are eliminated. The contributions of this study are two folds. First, a novel compression framework for TLM, namely TLMZ, is proposed. Second, the live migration performances of TLM and TLMZ are evaluated against those of the pre-copy mechanism. In our comparisons, the pre-copy mechanism was configured to operate using a range of Maximum Tolerable Downtime values and a number of compression options. An extensive number of experiments have been conducted. In our experiments, the TLM, TLMZ, and pre-copy mechanisms are used to migrate VMs running four OpenMP NAS parallel benchmarks. Experimental results show that TLM and TLMZ are practical solutions for the migrations of VMs running CPU-intensive and memory-intensive applications.

  • SNPD - Performance comparisons and data compression of time-bound live migration and pre-copy live migration of virtual machines
    2017 18th IEEE ACIS International Conference on Software Engineering Artificial Intelligence Networking and Parallel Distributed Computing (SNPD), 2017
    Co-Authors: Kasidit Chanchio, Phithak Thaenkaew
    Abstract:

    Pre-copy live migration is a popular virtual machine (VM) live migration mechanism that has been used in most hypervisors. In this mechanism, a key parameter, namely the Maximum Tolerable Downtime, is required for each migration. However, defining an appropriate value for this parameter is nontrivial, especially for the migration of a virtual machine running CPU-intensive and memory-intensive applications. If an inappropriate value is used, the migration may suffer poor performance. Time-bound Live Migration (TLM) is another live migration mechanism that was proposed to solve this problem. The TLM can operate automatically without the need for the Maximum Tolerable Downtime. Thus, the operational burden and performance penalty due to the configuration of the Maximum Tolerable Downtime are eliminated. The contributions of this study are two folds. First, a novel compression framework for TLM, namely TLMZ, is proposed. Second, the live migration performances of TLM and TLMZ are evaluated against those of the pre-copy mechanism. In our comparisons, the pre-copy mechanism was configured to operate using a range of Maximum Tolerable Downtime values and a number of compression options. An extensive number of experiments have been conducted. In our experiments, the TLM, TLMZ, and pre-copy mechanisms are used to migrate VMs running four OpenMP NAS parallel benchmarks. Experimental results show that TLM and TLMZ are practical solutions for the migrations of VMs running CPU-intensive and memory-intensive applications.

Phithak Thaenkaew - One of the best experts on this subject based on the ideXlab platform.

  • Performance comparisons and data compression of time-bound live migration and pre-copy live migration of virtual machines
    2017 18th IEEE ACIS International Conference on Software Engineering Artificial Intelligence Networking and Parallel Distributed Computing (SNPD), 2017
    Co-Authors: Kasidit Chanchio, Phithak Thaenkaew
    Abstract:

    Pre-copy live migration is a popular virtual machine (VM) live migration mechanism that has been used in most hypervisors. In this mechanism, a key parameter, namely the Maximum Tolerable Downtime, is required for each migration. However, defining an appropriate value for this parameter is nontrivial, especially for the migration of a virtual machine running CPU-intensive and memory-intensive applications. If an inappropriate value is used, the migration may suffer poor performance. Time-bound Live Migration (TLM) is another live migration mechanism that was proposed to solve this problem. The TLM can operate automatically without the need for the Maximum Tolerable Downtime. Thus, the operational burden and performance penalty due to the configuration of the Maximum Tolerable Downtime are eliminated. The contributions of this study are two folds. First, a novel compression framework for TLM, namely TLMZ, is proposed. Second, the live migration performances of TLM and TLMZ are evaluated against those of the pre-copy mechanism. In our comparisons, the pre-copy mechanism was configured to operate using a range of Maximum Tolerable Downtime values and a number of compression options. An extensive number of experiments have been conducted. In our experiments, the TLM, TLMZ, and pre-copy mechanisms are used to migrate VMs running four OpenMP NAS parallel benchmarks. Experimental results show that TLM and TLMZ are practical solutions for the migrations of VMs running CPU-intensive and memory-intensive applications.

  • SNPD - Performance comparisons and data compression of time-bound live migration and pre-copy live migration of virtual machines
    2017 18th IEEE ACIS International Conference on Software Engineering Artificial Intelligence Networking and Parallel Distributed Computing (SNPD), 2017
    Co-Authors: Kasidit Chanchio, Phithak Thaenkaew
    Abstract:

    Pre-copy live migration is a popular virtual machine (VM) live migration mechanism that has been used in most hypervisors. In this mechanism, a key parameter, namely the Maximum Tolerable Downtime, is required for each migration. However, defining an appropriate value for this parameter is nontrivial, especially for the migration of a virtual machine running CPU-intensive and memory-intensive applications. If an inappropriate value is used, the migration may suffer poor performance. Time-bound Live Migration (TLM) is another live migration mechanism that was proposed to solve this problem. The TLM can operate automatically without the need for the Maximum Tolerable Downtime. Thus, the operational burden and performance penalty due to the configuration of the Maximum Tolerable Downtime are eliminated. The contributions of this study are two folds. First, a novel compression framework for TLM, namely TLMZ, is proposed. Second, the live migration performances of TLM and TLMZ are evaluated against those of the pre-copy mechanism. In our comparisons, the pre-copy mechanism was configured to operate using a range of Maximum Tolerable Downtime values and a number of compression options. An extensive number of experiments have been conducted. In our experiments, the TLM, TLMZ, and pre-copy mechanisms are used to migrate VMs running four OpenMP NAS parallel benchmarks. Experimental results show that TLM and TLMZ are practical solutions for the migrations of VMs running CPU-intensive and memory-intensive applications.

Joshua Feldman - One of the best experts on this subject based on the ideXlab platform.

  • Domain 7: Security operations
    Eleventh Hour CISSP®, 2017
    Co-Authors: Eric Conrad, Seth Misenar, Joshua Feldman
    Abstract:

    Security operations focus on configuration and change management. Continuity of operations is also presented in this chapter with discussions of different methods of ensuring availability through highly available systems, redundant array of inexpensive disks, and service level agreements. A methodology and discussion about incident response is the final focus of the Operations Security domain. The second part of this chapter focuses on business continuity and disaster recovery. A thorough understanding of both business continuity planning (BCP) and disaster recovery planning (DRP) is required in order to be successful in answering questions from this domain. A key goal is to understand the differences in the scope and purpose of BCP and DRP. DRP represents a more tactical information systems focused exercise while BCP, which includes DRP as one of its components, is considerably more vast and high level. Key concepts for this domain include that of performing a business impact analysis and determining a system's Maximum Tolerable Downtime.

  • domain 7 security operations e g foundational concepts investigations incident management disaster recovery
    CISSP Study Guide (Third Edition), 2015
    Co-Authors: Eric Conrad, Seth Misenar, Joshua Feldman
    Abstract:

    Security Operations focuses on configuration and change management. Continuity of Operations is also presented in this chapter with discussions of different methods of trying to ensure availability through highly available systems, Redundant Array of Inexpensive Disks (RAID), and Service Level Agreements (SLA). A methodology and discussion about incident response is the final focus of the Operations Security domain. The second part of Chapter 8 focuses on Business Continuity and Disaster Recovery Planning. A thorough understanding of both Business Continuity Planning (BCP) and Disaster Recovery Planning (DRP) is required in order to be successful with questions from this domain. A key goal is to understand the differences in the scope and purpose of the BCP and DRP. DRP represents a more tactical information systems focused exercise while the BCP, which includes DRP as one of its components, is considerably more vast and high level. Key concepts for this domain include that of performing a Business Impact Analysis (BIA) and determining a system’s Maximum Tolerable Downtime (MTD).

  • Domain 8: Business Continuity and Disaster Recovery Planning
    Eleventh Hour CISSP, 2014
    Co-Authors: Eric Conrad, Seth Misenar, Joshua Feldman
    Abstract:

    This chapter focuses on Domain 8: Business Continuity and Disaster Recovery Planning. A thorough understanding of both Business Continuity Planning (BCP) and Disaster Recovery Planning (DRP) is required in order to be successful with questions from this domain. A key goal is to understand the differences in the scope and purpose of the BCP and DRP. DRP represents a more tactical information systems’ focused exercise while the BCP, which includes DRP as one of its components, is considerably more vast and high level. Key concepts for this domain include that of performing a Business Impact Analysis (BIA) and determining a system’s Maximum Tolerable Downtime (MTD).

Eric Conrad - One of the best experts on this subject based on the ideXlab platform.

  • Domain 7: Security operations
    Eleventh Hour CISSP®, 2017
    Co-Authors: Eric Conrad, Seth Misenar, Joshua Feldman
    Abstract:

    Security operations focus on configuration and change management. Continuity of operations is also presented in this chapter with discussions of different methods of ensuring availability through highly available systems, redundant array of inexpensive disks, and service level agreements. A methodology and discussion about incident response is the final focus of the Operations Security domain. The second part of this chapter focuses on business continuity and disaster recovery. A thorough understanding of both business continuity planning (BCP) and disaster recovery planning (DRP) is required in order to be successful in answering questions from this domain. A key goal is to understand the differences in the scope and purpose of BCP and DRP. DRP represents a more tactical information systems focused exercise while BCP, which includes DRP as one of its components, is considerably more vast and high level. Key concepts for this domain include that of performing a business impact analysis and determining a system's Maximum Tolerable Downtime.

  • domain 7 security operations e g foundational concepts investigations incident management disaster recovery
    CISSP Study Guide (Third Edition), 2015
    Co-Authors: Eric Conrad, Seth Misenar, Joshua Feldman
    Abstract:

    Security Operations focuses on configuration and change management. Continuity of Operations is also presented in this chapter with discussions of different methods of trying to ensure availability through highly available systems, Redundant Array of Inexpensive Disks (RAID), and Service Level Agreements (SLA). A methodology and discussion about incident response is the final focus of the Operations Security domain. The second part of Chapter 8 focuses on Business Continuity and Disaster Recovery Planning. A thorough understanding of both Business Continuity Planning (BCP) and Disaster Recovery Planning (DRP) is required in order to be successful with questions from this domain. A key goal is to understand the differences in the scope and purpose of the BCP and DRP. DRP represents a more tactical information systems focused exercise while the BCP, which includes DRP as one of its components, is considerably more vast and high level. Key concepts for this domain include that of performing a Business Impact Analysis (BIA) and determining a system’s Maximum Tolerable Downtime (MTD).

  • Domain 8: Business Continuity and Disaster Recovery Planning
    Eleventh Hour CISSP, 2014
    Co-Authors: Eric Conrad, Seth Misenar, Joshua Feldman
    Abstract:

    This chapter focuses on Domain 8: Business Continuity and Disaster Recovery Planning. A thorough understanding of both Business Continuity Planning (BCP) and Disaster Recovery Planning (DRP) is required in order to be successful with questions from this domain. A key goal is to understand the differences in the scope and purpose of the BCP and DRP. DRP represents a more tactical information systems’ focused exercise while the BCP, which includes DRP as one of its components, is considerably more vast and high level. Key concepts for this domain include that of performing a Business Impact Analysis (BIA) and determining a system’s Maximum Tolerable Downtime (MTD).

Jumpol Yaothanee - One of the best experts on this subject based on the ideXlab platform.

  • Efficient Pre-Copy Live Migration of Virtual Machines for High Performance Computing in Cloud Computing Environments
    2018 3rd International Conference on Computer and Communication Systems (ICCCS), 2018
    Co-Authors: Kasidit Chanchio, Jumpol Yaothanee
    Abstract:

    Pre-copy live migration is the most popular migration mechanism implemented in most hypervisors. However, it is not suitable for Virtual Machines (VMs) running computation-intensive and memory-intensive workloads because its operational behaviors depend on a configuration parameter, namely the Maximum Tolerable Downtime. Although the default value of this parameter is good enough for normal web-based applications, it is too low for most HPC applications, which are computation-intensive and memoryintensive. Performing a migration with an inappropriate parameter may cause extensively long migration time or Downtime. Defining this parameter is nontrivial since application workloads are generally unpredictable. This difficulty also makes it hard for cloud management systems to operate VM live migration automatically. In this paper, we propose the Memory-bound Pre-copy Live Migration (MPLM) mechanism that performs VM live migration without requiring the Maximum Tolerable Downtime parameter. MPLM presents a new perspective of VM live migration, where the migration is performed based on the present state of VM computation without enforcing Downtime constraints. During live migration, MPLM separates memory pages into dirty and non-dirty sets and transmits them in a multiplexing manner. MPLM has been implemented in a modified version of the QEMU-KVM software. Experiments have been conducted to evaluate MPLM performances against those of the traditional pre-copy mechanism. We performed a number of live migrations of VMs running four OpenMP NAS Parallel Benchmark programs. Experimental results show that MPLM is more efficient and easier to use than the pre-copy mechanism.