专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明授权

US08443261B2 Transparent recovery from hardware memory errors 有权
标题翻译：从硬件内存错误中恢复透明
公开(公告)号：US08443261B2
公开(公告)日：2013-05-14
申请号：US12636010
申请日：2009-12-11
申请人： Carl A. Waldspurger , Dilpreet Bindra , Gregory Harm , Patrick Tullmann
发明人： Carl A. Waldspurger , Dilpreet Bindra , Gregory Harm , Patrick Tullmann
IPC分类号： G06F11/00
CPC分类号： G06F11/08 , G06F11/141
摘要： A method is provided for recovering from an uncorrected memory error located at a memory address as identified by a memory device. A stored hash value for a memory page corresponding to the identified memory address is used to determine the correct data. Because the memory device specifies the location of the corrupted data, and the size of the window where the corruption occurred, the stored hash can be used to verify memory page reconstruction. With the known good part of the data in hand, the hashes of the pages using possible values in place of the corrupted data are calculated. It is expected that there will be a match between the previously stored hash and one of the computed hashes. As long as there is one and only one match, then that value, used in the place of the corrupted data, is the correct value. The corrupt data, once replaced, allows operation of the memory device to continue without needing to interrupt or otherwise affect a system's operation.
摘要翻译：提供一种用于从由存储器件识别的存储器地址处的未校正的存储器错误中恢复的方法。用于与所识别的存储器地址相对应的存储器页的存储的散列值用于确定正确的数据。由于内存设备指定损坏的数据的位置以及发生损坏的窗口的大小，因此可以使用存储的散列来验证内存页重建。利用手头已知的很好的部分数据，可以计算使用可能值代替已损坏数据的页面散列。预期在先前存储的散列和所计算的散列之一将存在匹配。只要有一个只有一个匹配，那么在损坏的数据的位置使用的值是正确的值。损坏的数据一旦被更换，就允许存储设备的操作继续进行，而不需要中断或以其他方式影响系统的操作。

42. 发明申请

US20120221732A1 RESOURCE ALLOCATION IN COMPUTERS 有权
标题翻译：资源分配在计算机
公开(公告)号：US20120221732A1
公开(公告)日：2012-08-30
申请号：US13460746
申请日：2012-04-30
申请人： Carl A. Waldspurger
发明人： Carl A. Waldspurger
IPC分类号： G06F15/16
CPC分类号： G06F3/0631 , G06F3/0604 , G06F3/0653 , G06F3/0683 , G06F9/4881 , G06F9/5016 , H04L41/5054 , H04L43/04 , H04L43/08 , H04L47/76
摘要： A method and tangible medium embodying code for allocating resource units of an allocatable resource among a plurality of clients in a computer is described. In the method, resource units are initially distributed among the clients by assigning to each of the clients a nominal share of the allocatable resource. For each client, a current allocation of resource units is determined. A metric is evaluated for each client, the metric being a function both of the nominal share and a usage-based factor, the usage-based factor being a function of a measure of resource units that the client is actively using and a measure of resource units that the client is not actively using. A resource unit can be reclaimed from a client when the metric for that client meets a predetermined criterion.
摘要翻译：描述了一种体现用于在计算机中的多个客户端中分配可分配资源的资源单元的代码的方法和有形介质。在该方法中，通过向每个客户端分配可分配资源的标称份额，资源单元最初分布在客户端之间。对于每个客户端，确定资源单元的当前分配。针对每个客户端评估度量，度量是名义份额和基于使用的因素的函数，基于使用的因素是客户端正在使用的资源单位的度量的度量和资源的度量客户端没有积极使用的单位。当客户端的度量符合预定标准时，可以从客户端回收资源单元。

43. 发明授权

US08127014B2 Quality of service management 有权
标题翻译：服务质量管理
公开(公告)号：US08127014B2
公开(公告)日：2012-02-28
申请号：US13009978
申请日：2011-01-20
申请人： Ajay Gulati , Irfan Ahmad , Carl A. Waldspurger
发明人： Ajay Gulati , Irfan Ahmad , Carl A. Waldspurger
IPC分类号： G06F15/173 , G06F15/16 , G06F5/00 , G06F9/46
CPC分类号： G06F9/52
摘要： A method and system for providing quality of service to a plurality of hosts accessing a common resource is described. According to one embodiment, a plurality of IO requests is received from clients executing as software entities on one of the hosts. An IO request queue for each client is separately managed, and an issue queue is populated based on contents of the IO request queues. When a host issue queue is not full, a new IO request is entered into the host issue queue and is issued to the common resource. A current average latency observed at the host is calculated, and an adjusted window size is calculated at least in part based on the current average latency. The window size of the issue queue is adjusted according to the calculated window size.
摘要翻译：描述了一种用于向接入公共资源的多个主机提供服务质量的方法和系统。根据一个实施例，从作为主机之一上的软件实体执行的客户端接收到多个IO请求。每个客户端的IO请求队列被单独管理，并且基于IO请求队列的内容填充问题队列。当主机发出队列未满时，将向主机发出队列中输入新的IO请求，并发布给公共资源。计算在主机处观察到的当前平均延迟，并且基于当前平均延迟至少部分地计算调整的窗口大小。根据计算的窗口大小调整问题队列的窗口大小。

44. 发明申请

US20100095300A1 Online Computation of Cache Occupancy and Performance 有权
标题翻译：缓存占用率和性能的在线计算
公开(公告)号：US20100095300A1
公开(公告)日：2010-04-15
申请号：US12251108
申请日：2008-10-14
申请人： Richard West , Puneet Zaroo , Carl A. Waldspurger , Xiao Zhang , Haoqiang Zheng
发明人： Richard West , Puneet Zaroo , Carl A. Waldspurger , Xiao Zhang , Haoqiang Zheng
IPC分类号： G06F9/50 , G06F9/46
CPC分类号： G06F9/50 , G06F9/5005 , G06F9/5011 , G06F9/5016 , G06F9/5022 , G06F9/5027 , G06F9/5033 , G06F9/5044 , G06F9/505 , G06F9/5055 , G06F11/3409 , G06F11/3442 , G06F11/3452 , G06F11/3466 , G06F12/08 , G06F12/0802 , G06F12/0804 , G06F12/0806 , G06F12/0815 , G06F12/084 , G06F2201/88
摘要： Methods, computer programs, and systems for managing thread performance in a computing environment based on cache occupancy are provided. In one embodiment, a computer implemented method assigns a thread performance counter to threads being created to measure the number of cache misses for the threads. The thread performance counter is deduced in one embodiment based on performance counters associated with each core in a processor. The method further calculates a self-thread value as the change in the thread performance counter of a given thread during a predetermined period, and an other-thread value as the sum of all the changes in the thread performance counters for all threads except for the given thread. Further, the method estimates a cache occupancy for the given thread based on a previous occupancy for the given thread, and the calculated shelf-thread and other-thread values. The estimated cache occupancy is used to assign computing environment resources to the given thread. In another embodiment, cache miss-rate curves are constructed for a thread to help analyze performance tradeoffs when changing cache allocations of the threads in the system.
摘要翻译：提供了基于缓存占用的用于在计算环境中管理线程性能的方法，计算机程序和系统。在一个实施例中，计算机实现的方法为正在创建的线程分配线程性能计数器以测量线程的高速缓存未命中的数量。基于与处理器中的每个核心相关联的性能计数器，在一个实施例中推导出线程性能计数器。该方法进一步计算自线程值作为在预定时段期间给定线程的线程性能计数器的变化，而另一线程值作为所有线程的线程性能计数器的所有变化之和除外给线程此外，该方法基于给定线程的先前占用以及所计算的架线和其他线程值来估计给定线程的高速缓存占用。估计的高速缓存占用率用于将计算环境资源分配给给定的线程。在另一个实施例中，为线程构建高速缓存未命中率曲线，以帮助在改变系统中的线程的高速缓存分配时分析性能权衡。

45. 发明授权

US07620766B1 Transparent sharing of memory pages using content comparison 有权
标题翻译：使用内容比较透明共享内存页面
公开(公告)号：US07620766B1
公开(公告)日：2009-11-17
申请号：US10881817
申请日：2004-06-30
申请人： Carl A. Waldspurger
发明人： Carl A. Waldspurger
IPC分类号： G06F12/02
CPC分类号： G06F12/1018 , G06F12/1036 , G06F12/109 , G06F2212/151
摘要： A computer system has one or more software contexts that share use of a memory that is divided into units such as pages. In the preferred embodiment of the invention, the contexts are, or include, virtual machines running on a common hardware platform. The contents, as opposed to merely the addresses or page numbers, of virtual memory pages that are accessible to one or more contexts are examined. If two or more context pages are identical, then their memory mappings are changed to point to a single, shared copy of the page in the hardware memory, thereby freeing the memory space taken up by the redundant copies. The shared copy is then preferably marked copy-on-write. Sharing is preferably dynamic, whereby the presence of redundant copies of pages is preferably determined by hashing page contents and performing full content comparisons only when two or more pages hash to the same key.
摘要翻译：计算机系统具有共享使用被划分为诸如页面的单元的存储器的一个或多个软件上下文。在本发明的优选实施例中，上下文是或包括在通用硬件平台上运行的虚拟机。检查与一个或多个上下文可访问的虚拟存储器页面的内容（而不仅仅是地址或页码）。如果两个或多个上下文页面相同，则将其内存映射更改为指向硬件存储器中页面的单个共享副本，从而释放由冗余副本占用的内存空间。共享副本然后优选地被标记为写时复制。共享优选是动态的，由此，仅当两个或更多个页面散列到相同的密钥时，优选地通过散列页面内容并执行全部内容比较来确定页面的冗余副本。

46. 发明授权

US09454478B2 System and method for controlling resource revocation in a multi-guest computer system 有权
标题翻译：用于控制多客户计算机系统中的资源撤销的系统和方法
公开(公告)号：US09454478B2
公开(公告)日：2016-09-27
申请号：US13430318
申请日：2012-03-26
申请人： Carl A. Waldspurger
发明人： Carl A. Waldspurger
IPC分类号： G06F15/173 , G06F12/02 , H04L29/08 , H04L29/06 , G06F9/50
CPC分类号： G06F9/5016 , G06F8/4434 , G06F9/5011 , G06F9/5077 , G06F12/023 , G06F12/0284 , G06F2009/45583 , G06F2209/5014 , G06F2212/1044 , H04L29/06 , H04L29/08144
摘要： At least one guest system, for example, a virtual machine, is connected to a host system, which includes a system resource such as system machine memory. Each guest system includes a guest operating system (OS). A resource requesting mechanism, preferably a driver, is installed within each guest OS and communicates with a resource scheduler included within the host system. If the host system needs any one the guest systems to relinquish some of the system resource it currently is allocated, then the resource scheduler instructs the driver within that guest system's OS to reserve more of the resource, using the guest OS's own, native resource allocation mechanisms. The driver thus frees this resource for use by the host, since the driver does not itself actually need the requested amount of the resource.
摘要翻译：至少一个客户系统（例如，虚拟机）被连接到主机系统，其包括诸如系统机器存储器的系统资源。每个客系统包括客户操作系统（OS）。资源请求机制，优选地是驱动程序，安装在每个客户操作系统内，并与主机系统内的资源调度器进行通信。如果主机系统需要任何一个客户机系统来放弃目前分配的一些系统资源，则资源调度器使用客户操作系统自己的本地资源分配来指示该客户机系统的操作系统内的驱动程序预留更多的资源机制因此，驱动程序可以释放此资源供主机使用，因为驱动程序本身实际上不需要所请求的资源量。

47. 发明授权

US08495631B2 Undefeatable transformation for virtual machine I/O operations 有权
标题翻译：虚拟机I / O操作的不可逆转换
公开(公告)号：US08495631B2
公开(公告)日：2013-07-23
申请号：US13289580
申请日：2011-11-04
申请人： Carl A. Waldspurger , Edouard Bugnion
发明人： Carl A. Waldspurger , Edouard Bugnion
IPC分类号： G06F9/455 , G06F17/00 , G06F11/00
CPC分类号： G06F9/545 , G06F9/45558 , G06F2009/45579
摘要： I/O operations between a virtual machine (VM) and a device external to the VM are monitored by a virtual machine monitor (VMM). Data passing between the VM and the external device is transformed by the VMM, in some cases only when a predetermined filtering or triggering condition is met. Because the VMM, and thus the transformation operation, is transparent to the VM, the transformation cannot be prevented or undone or even affected by any action by a user of the VM. Examples of the non-defeatable transformation of I/O data include generating display overlays such as banners, masking out portions of a display, encryption, compression and network shaping such as bandwidth limiting.
摘要翻译：虚拟机（VM）与VM外部的设备之间的I / O操作由虚拟机监视器（VMM）监视。虚拟机和外部设备之间的数据通过VMM进行转换，在某些情况下，只有当满足预定的过滤或触发条件时才会进行。因为VMM，因此转换操作对于VM是透明的，所以转换不能被VM的用户的任何动作阻止或撤消甚至影响。 I / O数据的不可逆转换的示例包括生成诸如横幅的显示覆盖，屏蔽显示的部分，加密，压缩和诸如带宽限制的网络整形。

48. 发明授权

US08417812B1 Methods and systems for detecting anomalies during IO accesses 有权
标题翻译：在IO访问期间检测异常的方法和系统
公开(公告)号：US08417812B1
公开(公告)日：2013-04-09
申请号：US12834324
申请日：2010-07-12
申请人： Ajay Gulati , Irfan Ahmad , Jyothir Ramanan , Carl A. Waldspurger
发明人： Ajay Gulati , Irfan Ahmad , Jyothir Ramanan , Carl A. Waldspurger
IPC分类号： G06F15/173
CPC分类号： H04L43/0876 , G06F3/06 , G06F11/00 , G06F11/0727 , G06F11/0757 , G06F11/3419 , G06F11/3485 , G06F2201/81 , G06F2201/815 , H04L43/0852 , H04L47/00 , H04L47/12 , H04L47/56 , H04L47/6275 , H04L67/1097 , H04L69/40
摘要： An anomaly in a shared input/ouput (IO) resource that is accessed by a plurality hosts or clients is detected when a host that is not bound by any QoS policy presents large workloads to a shared IO resource that is also accessed by hosts or clients that are governed by QoS policy. The anomaly detection triggers a response from the hosts or clients as a way to protect against the effect of the anomaly. The response is an increase in window sizes. The window sizes of the hosts or clients may be increased to the maximum window size or in proportion to their QoS shares.
摘要翻译：当未被任何QoS策略约束的主机向主机或客户端访问的共享IO资源提供大量工作负载时，会检测到由多个主机或客户机访问的共享输入/输出（IO）资源中的异常情况由QoS策略管理。异常检测触发主机或客户端的响应，作为防止异常的影响的一种方式。响应是窗口大小的增加。主机或客户端的窗口大小可以增加到最大窗口大小或者与它们的QoS份额成比例。

49. 发明授权

US07912951B2 Quality of service management 有权
标题翻译：服务质量管理
公开(公告)号：US07912951B2
公开(公告)日：2011-03-22
申请号：US12260054
申请日：2008-10-28
申请人： Ajay Gulati , Irfan Ahmad , Carl A. Waldspurger
发明人： Ajay Gulati , Irfan Ahmad , Carl A. Waldspurger
IPC分类号： G06F15/173 , G06F13/28 , G06F9/46
CPC分类号： G06F9/52
摘要： A method and system for providing quality of service to a plurality of hosts accessing a common resource is described. According to one embodiment, a plurality of IO requests is received from clients executing as software entities on one of the hosts. An IO request queue for each client is separately managed, and an issue queue is populated based on contents of the IO request queues. When a host issue queue is not full, a new IO request is entered into the host issue queue and is issued to the common resource. A current average latency observed at the host is calculated, and an adjusted window size is calculated at least in part based on the current average latency. The window size of the issue queue is adjusted according to the calculated window size.
摘要翻译：描述了一种用于向接入公共资源的多个主机提供服务质量的方法和系统。根据一个实施例，从作为主机之一上的软件实体执行的客户端接收到多个IO请求。每个客户端的IO请求队列被单独管理，并且基于IO请求队列的内容填充问题队列。当主机发出队列未满时，将向主机发出队列中输入新的IO请求，并发布给公共资源。计算在主机处观察到的当前平均延迟，并且基于当前平均延迟至少部分地计算经调整的窗口大小。根据计算的窗口大小调整问题队列的窗口大小。

50. 发明申请

US20100299667A1 SHORTCUT INPUT/OUTPUT IN VIRTUAL MACHINE SYSTEMS 有权
标题翻译：虚拟机系统中的快速输入/输出
公开(公告)号：US20100299667A1
公开(公告)日：2010-11-25
申请号：US12783205
申请日：2010-05-19
申请人： Irfan Ahmad , Carl A. Waldspurger
发明人： Irfan Ahmad , Carl A. Waldspurger
IPC分类号： G06F12/08 , G06F9/455
CPC分类号： G06F12/1018 , G06F12/1036 , G06F12/109 , G06F2212/152 , G06F2212/656
摘要： Read requests to a commonly accessed storage volume are conditionally issued, depending on whether or not a requested data block is already stored in memory from a prior access or to be stored in memory upon completion of a pending request. A data structure is maintained in memory to track physical memory pages and to indicate for each physical memory page the corresponding location in the storage volume from which the contents of the physical memory were read and the number of virtual memory pages that are mapped thereto.
摘要翻译：根据所请求的数据块是否已经从先前的访问中存储在存储器中，或者在完成未决请求时被存储在存储器中，有条件地发出对常用访问存储卷的读取请求。在存储器中维护数据结构以跟踪物理存储器页面，并且为每个物理存储器页面指示从其读取物理存储器的内容的存储卷中的对应位置和映射到其的虚拟存储器页面的数量。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式