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1. 发明授权

US08943259B2 Relieving memory pressure in a host using database memory management 有权
标题翻译：使用数据库内存管理减轻主机中的内存压力
公开(公告)号：US08943259B2
公开(公告)日：2015-01-27
申请号：US12946971
申请日：2010-11-16
申请人： Boris Weissman , Aleksandr V. Mirgorodskiy , Ganesh Venkitachalam , Feng Tian
发明人： Boris Weissman , Aleksandr V. Mirgorodskiy , Ganesh Venkitachalam , Feng Tian
IPC分类号： G06F9/455 , G06F12/02 , G06F17/30
CPC分类号： G06F9/45558 , G06F12/023 , G06F17/3048 , G06F2009/45583 , G06F2212/151 , G06F2212/163
摘要： Memory of a database management system (DBMS) that is running in a virtual machine is managed using techniques that integrate DBMS memory management with virtual machine memory management. Because of the integration, the effectiveness of DBMS memory management is preserved even though the physical memory allocated to the virtual machine may change during runtime as a result of varying memory demands of other applications, e.g., instances of other virtual machines, running on the same host computer as the virtual machine.
摘要翻译：使用将DBMS内存管理与虚拟机内存管理集成的技术来管理在虚拟机中运行的数据库管理系统（DBMS）的内存。由于集成，即使分配给虚拟机的物理内存可能在运行时间内由于其他应用程序的不同内存需求（例如，运行在其上的其他虚拟机的实例）的结果而改变，DBMS内存管理的有效性也将保持不变主机作为虚拟机。

2. 发明授权

US08832682B2 Trace collection for a virtual machine 有权
标题翻译：虚拟机的跟踪收集
公开(公告)号：US08832682B2
公开(公告)日：2014-09-09
申请号：US12058545
申请日：2008-03-28
申请人： Min Xu , Vyacheslav V. Malyugin , Jeffrey W. Sheldon , Ganesh Venkitachalam , Boris Weissman
发明人： Min Xu , Vyacheslav V. Malyugin , Jeffrey W. Sheldon , Ganesh Venkitachalam , Boris Weissman
IPC分类号： G06F9/455
CPC分类号： G06F9/45533 , G06F9/45558 , G06F2009/45591
摘要： One embodiment is a computer-implemented method of trace collection for a virtual machine that includes: executing a sequence of instructions from an initial state of the virtual machine; accessing an event log of data relating to nondeterministic events, which data includes an execution point; making at least a portion of the data available to the virtual machine when the sequence reaches the execution point; collecting trace information in response to expansion parameters; and storing the trace information in a trace file.
摘要翻译：一个实施例是用于虚拟机的跟踪收集的计算机实现的方法，包括：从虚拟机的初始状态执行指令序列; 访问与非确定性事件有关的数据的事件日志，所述数据包括执行点; 当所述序列到达所述执行点时，使所述数据的至少一部分可用于所述虚拟机; 根据扩展参数收集跟踪信息; 并将跟踪信息存储在跟踪文件中。

3. 发明授权

US08352944B2 Selective descheduling of idling guests running on a host computer system 有权
标题翻译：选择性地计算在主机系统上运行的空闲客户端
公开(公告)号：US08352944B2
公开(公告)日：2013-01-08
申请号：US12816494
申请日：2010-06-16
申请人： Boris Weissman , Dmitriy Budko
发明人： Boris Weissman , Dmitriy Budko
IPC分类号： G06F11/00 , G06F9/46 , G06F9/455
CPC分类号： G06F9/485 , G06F8/52 , G06F9/45558 , G06F9/5022 , G06F11/3466 , G06F2009/45575 , G06F2201/865 , G06F2209/508
摘要： Guests, such as virtual machines, that are running on a host hardware platform are selectively descheduled when an idling condition is detected. An example of the idling condition is that the guest has been executing instructions in an idle loop for more than a threshold period. Guest instructions may be evaluated for the idling condition in conjunction with binary translation.
摘要翻译：当检测到怠速条件时，选择性地排除在主机硬件平台上运行的诸如虚拟机的客户端。怠速条件的一个例子是客人已经在空闲循环中执行超过一个阈值周期的指令。可以结合二进制翻译来评估客户指令的空转条件。

4. 发明授权

US08321842B2 Replay time only functionalities in a virtual machine 有权
标题翻译：仅在虚拟机中重放时间功能
公开(公告)号：US08321842B2
公开(公告)日：2012-11-27
申请号：US12163513
申请日：2008-06-27
申请人： Min Xu , Dmitry Grinberg , Vyacheslav Malyugin , Petr Vandrovec , Ganesh Venkitachalam , Boris Weissman , Andrew Biggadike , James Chow
发明人： Min Xu , Dmitry Grinberg , Vyacheslav Malyugin , Petr Vandrovec , Ganesh Venkitachalam , Boris Weissman , Andrew Biggadike , James Chow
IPC分类号： G06F9/44 , G06F9/455
CPC分类号： G06F11/3664 , G06F9/4418 , G06F11/3624
摘要： Replay-time-only functionalities in a computer program are executed only during replay in a virtual machine and are skipped outside of replay. If a replay-time-only functionality is detected during the replay of a program execution in a virtual machine, the replay may be paused and the virtual machine state may be saved. The replay-time-only core functionality is executed. When this execution is complete, a prior state of the virtual machine may be restored and the replay may be resumed.
摘要翻译：仅在虚拟机中重放时才执行计算机程序中的仅重播功能，并在重播之外跳过。如果在重放虚拟机中的程序执行期间检测到仅播放时间功能，则可以暂停重放并且可以保存虚拟机状态。重播时间核心功能被执行。当该执行完成时，可以恢复虚拟机的先前状态并且可以恢复重放。

5. 发明授权

US08201169B2 Virtual machine fault tolerance 有权
标题翻译：虚拟机容错
公开(公告)号：US08201169B2
公开(公告)日：2012-06-12
申请号：US12484640
申请日：2009-06-15
申请人： Ganesh Venkitachalam , Rohit Jain , Boris Weissman , Daniel J. Scales , Vyacheslav Malyugin , Jeffrey W. Sheldon , Min Xu
发明人： Ganesh Venkitachalam , Rohit Jain , Boris Weissman , Daniel J. Scales , Vyacheslav Malyugin , Jeffrey W. Sheldon , Min Xu
IPC分类号： G06F9/455 , G06F9/46 , G06F11/00
CPC分类号： G06F11/1658 , G06F9/45533 , G06F9/45558 , G06F9/4881 , G06F11/0712 , G06F11/0766 , G06F11/079 , G06F2009/45579 , G06F2009/45591 , G06F2201/805 , G06F2201/815 , G06F2201/82
摘要： In a computer system running a primary virtual machine (VM) on virtualization software on a primary virtualized computer system (VCS) and running a secondary VM on virtualization software on a secondary VCS, a method for the secondary VM to provide quasi-lockstep fault tolerance for the primary VM includes: as the primary VM is executing a workload, virtualization software in the primary VCS is: (a) causing predetermined events to be recorded in an event log, (b) keeping output associated with the predetermined events pending, and (c) sending the log entries to the virtualization software in the secondary VCS; as the secondary VM is replaying the workload, virtualization software in the secondary VCS is: (a) sending acknowledgements indicating that log entries have been received; (b) when the virtualization software encounters one of the predetermined events, searching the log entries to determine whether a log entry corresponding to the same event was received from the primary VCS, and if so, comparing data associated with the predetermined event produced by the secondary VM with that of the primary VM; if there is a match, the virtualization software in the secondary VCS transmitting an acknowledgement to the virtualization software in the primary VCS; one of the virtualization software in the primary or secondary VCS dropping the event and the other dispatching the output; and if there is no match, performing a checkpoint resynchronization.
摘要翻译：在主虚拟化计算机系统（VCS）上的虚拟化软件上运行主虚拟机（VM）并在辅助VCS上运行虚拟化软件上的辅助虚拟机的计算机系统中，辅助虚拟机提供准锁步骤容错对于主虚拟机包括：当主虚拟机正在执行工作负载时，主VCS中的虚拟化软件是：（a）使事件日志中记录预定事件，（b）保持与预定事件挂起的输出挂起，以及（c）将日志条目发送到二级VCS中的虚拟化软件; 当辅助虚拟机正在重播工作负载时，辅助VCS中的虚拟化软件是：（a）发送指示已经接收到日志条目的确认; （b）当虚拟化软件遇到预定事件之一时，搜索日志条目以确定是否从主VCS接收到与同一事件相对应的日志条目，如果是，则将与由该VCS生成的预定事件相关联的数据进行比较辅助虚拟机与主虚拟机的辅助虚拟机; 如果存在匹配，则次级VCS中的虚拟化软件向主VCS中的虚拟化软件发送确认; 主要或次要VCS中的虚拟化软件之一放弃事件，另一个调度输出; 如果没有匹配，则执行检查点重新同步。

6. 发明授权

US07945908B1 Method and system for improving the accuracy of timing and process accounting within virtual machines 有权
标题翻译：提高虚拟机中计时和进程计费精度的方法和系统
公开(公告)号：US07945908B1
公开(公告)日：2011-05-17
申请号：US11394927
申请日：2006-03-31
申请人： Carl Waldspurger , Michael Craig , Ramesh Dharan , Rajit S. Kambo , Timothy P. Mann , Stephen A. Muckle , Boris Weissman , John Zedlewski
发明人： Carl Waldspurger , Michael Craig , Ramesh Dharan , Rajit S. Kambo , Timothy P. Mann , Stephen A. Muckle , Boris Weissman , John Zedlewski
IPC分类号： G06F9/455 , G06F13/24
CPC分类号： G06F9/45533
摘要： A sponge process, for example within a driver in a guest operating system, is associated in a virtual computer system with each virtual processor in one or more virtual machines. When timer interrupts become backlogged, for example because a virtual machine is temporarily descheduled to allow other virtual machines to run, and upon occurrence of a trigger event, a conventional interrupt is disengaged and catch-up interrupts are instead directed into an appropriate one of the sponge processes. The backlogged timer interrupts are thus delivered without unfairly attributing descheduled time to whatever processes happened to be running while the catch-up interrupts are delivered, and without violating typical guest operating system timing assumptions.
摘要翻译：例如在客户机操作系统中的驱动程序内的海绵过程在虚拟计算机系统中与每个虚拟处理器在一个或多个虚拟机中相关联。当定时器中断变得积压时，例如因为虚拟机被临时调度以允许其他虚拟机运行，并且在发生触发事件时，传统的中断被分离，并且追赶中断被引导到适当的一个海绵工艺。因此，积压的定时器中断不会对计划外的时间进行不公平的归因，而不会在提供追赶中断时发生正在运行的任何进程，并且不会违反典型的客户机操作系统时序假设。

7. 发明申请

US20100318991A1 Virtual Machine Fault Tolerance 有权
标题翻译：虚拟机容错
公开(公告)号：US20100318991A1
公开(公告)日：2010-12-16
申请号：US12484640
申请日：2009-06-15
申请人： Ganesh VENKITACHALAM , Rohit JAIN , Boris WEISSMAN , Daniel J. SCALES , Vyacheslav MALYUGIN , Jeffrey W. SHELDON , Min XU
发明人： Ganesh VENKITACHALAM , Rohit JAIN , Boris WEISSMAN , Daniel J. SCALES , Vyacheslav MALYUGIN , Jeffrey W. SHELDON , Min XU
IPC分类号： G06F9/455
CPC分类号： G06F11/1658 , G06F9/45533 , G06F9/45558 , G06F9/4881 , G06F11/0712 , G06F11/0766 , G06F11/079 , G06F2009/45579 , G06F2009/45591 , G06F2201/805 , G06F2201/815 , G06F2201/82
摘要： In a computer system running a primary virtual machine (VM) on virtualization software on a primary virtualized computer system (VCS) and running a secondary VM on virtualization software on a secondary VCS, a method for the secondary VM to provide quasi-lockstep fault tolerance for the primary VM includes: as the primary VM is executing a workload, virtualization software in the primary VCS is: (a) causing predetermined events to be recorded in an event log, (b) keeping output associated with the predetermined events pending, and (c) sending the log entries to the virtualization software in the secondary VCS; as the secondary VM is replaying the workload, virtualization software in the secondary VCS is: (a) sending acknowledgements indicating that log entries have been received; (b) when the virtualization software encounters one of the predetermined events, searching the log entries to determine whether a log entry corresponding to the same event was received from the primary VCS, and if so, comparing data associated with the predetermined event produced by the secondary VM with that of the primary VM; if there is a match, the virtualization software in the secondary VCS transmitting an acknowledgement to the virtualization software in the primary VCS; one of the virtualization software in the primary or secondary VCS dropping the event and the other dispatching the output; and if there is no match, performing a checkpoint resynchronization.
摘要翻译：在主虚拟化计算机系统（VCS）上的虚拟化软件上运行主虚拟机（VM）并在辅助VCS上运行虚拟化软件上的辅助虚拟机的计算机系统中，辅助虚拟机提供准锁步骤容错对于主虚拟机包括：当主虚拟机正在执行工作负载时，主VCS中的虚拟化软件是：（a）使事件日志中记录预定事件，（b）保持与预定事件挂起的输出挂起，以及（c）将日志条目发送到二级VCS中的虚拟化软件; 当辅助虚拟机正在重播工作负载时，辅助VCS中的虚拟化软件是：（a）发送指示已经接收到日志条目的确认; （b）当虚拟化软件遇到预定事件之一时，搜索日志条目以确定是否从主VCS接收到与同一事件相对应的日志条目，如果是，则将与由该VCS生成的预定事件相关联的数据进行比较辅助虚拟机与主虚拟机的辅助虚拟机; 如果存在匹配，则次级VCS中的虚拟化软件向主VCS中的虚拟化软件发送确认; 主要或次要VCS中的虚拟化软件之一放弃事件，另一个调度输出; 如果没有匹配，则执行检查点重新同步。

8. 发明授权

US07853960B1 Efficient virtualization of input/output completions for a virtual device 有权
标题翻译：虚拟设备的输入/输出完成的高效虚拟化
公开(公告)号：US07853960B1
公开(公告)日：2010-12-14
申请号：US11066363
申请日：2005-02-25
申请人： Ole Agesen , Boris Weissman , Keith Adams , Jennifer-Ann M. Anderson , Maxime Austruy
发明人： Ole Agesen , Boris Weissman , Keith Adams , Jennifer-Ann M. Anderson , Maxime Austruy
IPC分类号： G06F9/46 , G06F9/455
CPC分类号： G06F9/45508 , G06F9/45558 , G06F9/4825 , G06F2009/45579
摘要： Completion interrupts corresponding to I/O requests issued by a virtual machine guest, which runs on a host platform, are virtualized in such a way that I/O completion interrupts to the requesting guest are delivered no faster than it can stably handle them, but, when possible, faster than the nominal speed of a virtual device to which a virtual machine addresses the I/O request. In general, completion events received from the host platform in response to guest I/O requests are examined with respect to time. If enough time has passed that the virtual device would normally have completed the I/O request, then the completion interrupt is delivered to the guest. If the nominal time has not elapsed, however, the invention enqueues and time-stamps the event and delivers it at the earliest of a) the normal maturity time, or b) at a safepoint.
摘要翻译：在主机平台上运行的虚拟机访客发出的I / O请求相应的完成中断被虚拟化，使得对请求的客户端的I / O完成中断的传送速度不会比可以稳定地处理它们的速度更快，而是在可能的情况下，虚拟机对于I / O请求所对应的虚拟设备的标称速度更快。一般来说，根据客户端I / O请求从主机平台接收到的完成事件将相对于时间进行检查。如果虚拟设备通常已经完成了I / O请求的足够的时间，则完成中断将传递给客户端。然而，如果没有经过标称时间，本发明会在a）正常到期时间的最早时间排队和时间戳，并且b）在一个安全点。

9. 发明申请

US20090248611A1 Trace Collection for a Virtual Machine 有权
标题翻译：虚拟机的跟踪收集
公开(公告)号：US20090248611A1
公开(公告)日：2009-10-01
申请号：US12058545
申请日：2008-03-28
申请人： Min Xu , Vyacheslav V. Malyugin , Jeffrey W. Sheldon , Ganesh Venkitachalam , Boris Weissman
发明人： Min Xu , Vyacheslav V. Malyugin , Jeffrey W. Sheldon , Ganesh Venkitachalam , Boris Weissman
IPC分类号： G06F17/30
CPC分类号： G06F9/45533 , G06F9/45558 , G06F2009/45591
摘要： One embodiment is a computer-implemented method of trace collection for a virtual machine that includes: executing a sequence of instructions from an initial state of the virtual machine; accessing an event log of data relating to nondeterministic events, which data includes an execution point; making at least a portion of the data available to the virtual machine when the sequence reaches the execution point; collecting trace information in response to expansion parameters; and storing the trace information in a trace file.
摘要翻译：一个实施例是用于虚拟机的跟踪收集的计算机实现的方法，包括：从虚拟机的初始状态执行指令序列; 访问与非确定性事件有关的数据的事件日志，所述数据包括执行点; 当所述序列到达所述执行点时，使所述数据的至少一部分可用于所述虚拟机; 根据扩展参数收集跟踪信息; 并将跟踪信息存储在跟踪文件中。

10. 发明授权

US07590982B1 System and method for virtualizing processor and interrupt priorities 有权
标题翻译：虚拟化处理器和中断优先级的系统和方法
公开(公告)号：US07590982B1
公开(公告)日：2009-09-15
申请号：US10832056
申请日：2004-04-26
申请人： Boris Weissman
发明人： Boris Weissman
IPC分类号： G06F9/46 , G06F13/24
CPC分类号： G06F9/4812 , G06F13/26
摘要： Dispatching of interrupts to a processor is conditionally suppressed, that is, only if an old priority value and a new priority value are either both less than or both greater than a maximum pending priority value. This conditional avoidance of dispatching is preferably implemented by a virtual priority module within a binary translator in a virtualized computer system and relates to interrupts directed to a virtualized processor by a virtualized local APIC.
摘要翻译：有条件地抑制向处理器的调度，也就是说，只有当旧的优先级值和新的优先级值都小于或者都大于最大待处理的优先级值时。这种有条件地避免调度优选地由虚拟化计算机系统中的二进制转换器内的虚拟优先级模块实现，并且涉及通过虚拟化的本地APIC针对虚拟化处理器的中断。

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