Method for requesting identification of a neighbor node in a data
processing I/O system
    1.
    发明授权
    Method for requesting identification of a neighbor node in a data processing I/O system 失效
    在数据处理I / O系统中请求识别邻居节点的方法

    公开(公告)号:US5371897A

    公开(公告)日:1994-12-06

    申请号:US750356

    申请日:1991-08-27

    IPC分类号: G06F13/14 G06F13/00 H04L29/00

    CPC分类号: H04L29/00

    摘要: A method for acquiring the node identifier of a node in a data processing input/output (I/O) system having a plurality of nodes. This procedure is part of the initialization of each node in the I/O system and may be used to establish the configuration of the I/O system such that if a connection breaks or a fault occurs between nodes, the configuration can be confirmed after the break or fault is corrected. This prevents data from being sent to the wrong device if lines were connected in a different configuration during the correction of a fault. The node identifier is a worldwide-unique identifier such that only one node is identified by a node identifier. The node identifier contains a validity code that specifies if the node identifier is valid. Also disclosed is a retry procedure for retrying the acquisition of a node identifier if the acquired node identifier is not valid, and a deferral procedure which defers the retry procedure if a link is not available.

    摘要翻译: 一种用于获取具有多个节点的数据处理输入/输出(I / O)系统中的节点的节点标识符的方法。 该过程是I / O系统中每个节点的初始化的一部分,可用于建立I / O系统的配置,以便如果连接中断或节点之间发生故障,则可以在 故障或故障已更正。 这可以防止在校正故障期间将线路连接到不同配置中时将数据发送到错误的设备。 节点标识符是全球唯一的标识符,使得仅一个节点由节点标识符标识。 节点标识符包含指定节点标识符是否有效的有效性代码。 还公开了如果获取的节点标识符无效,则重试对节点标识符的获取的重试过程,以及如果链路不可用则延迟重试过程的延迟过程。

    Method of providing direct data processing access using a queued direct input-output device
    4.
    发明授权
    Method of providing direct data processing access using a queued direct input-output device 有权
    使用排队的直接输入 - 输出设备提供直接数据处理访问的方法

    公开(公告)号:US06397350B1

    公开(公告)日:2002-05-28

    申请号:US09253246

    申请日:1999-02-19

    IPC分类号: G06F1100

    摘要: A method of providing direct data processing access in a network computing system environment. The system environment has a main storage which can be connected to one or more application servers and is in processing communication with an interface element. The interface element has at least one adapter and can be connected to one or more application user(s). One or more queues are established in the main storage that can handle data without causing interrupts in the running programs. Incoming data is received using the adapter and as data is received or modified, the status of the network computing system will be updated to reflect the new data or change. Data is then processed in the main storage after interrogating the multiple existing queues in the main storage and forwarding them in turn to their appropriate destination or application server after a determination has been made by interrogating these queues.

    摘要翻译: 一种在网络计算系统环境中提供直接数据处理访问的方法。 系统环境具有可以连接到一个或多个应用服务器并正在处理与接口元件的通信的主存储器。 接口元件具有至少一个适配器并且可以连接到一个或多个应用用户。 在主存储器中建立一个或多个队列,可以处理数据,而不会导致正在运行的程序中断。 使用适配器接收传入数据,并且随着数据被接收或修改,网络计算系统的状态将被更新以反映新的数据或改变。 然后在主存储器中询问多个现有队列之后,在主存储器中处理数据,并且在通过询问这些队列进行确定之后将它们依次转发到其适当的目的地或应用服务器。

    Acquiring addresses in an input/output system
    5.
    发明授权
    Acquiring addresses in an input/output system 失效
    获取输入/输出系统中的地址

    公开(公告)号:US5276813A

    公开(公告)日:1994-01-04

    申请号:US576557

    申请日:1990-08-31

    摘要: In a computer I/O system including a plurality of link-level facilities and a dynamic switch having a plurality of ports, each link-level facility being attached to an individual one of the ports, a mechanism and method for assigning a unique link level address to each of the link-level facilities. As each of the link-level facilities comes on line, it sends an acquire link address (ALA) frame and waits for a response (ACK) frame. The ALA frame may be addressed to a general to-whom-it-may-concern address and have a source address of who-am-I. Only a dynamic switch normally assigns link addresses. When receiving an ALA frame, the dynamic switch returns an ACK frame having a unique link address assigned to the sender of the ALA frame. Provision is made for determining if there is a dynamic switch present, or, if the link-level facilities are connected together by a static connection through the dynamic switch, for the link-level facility of a channel to assign the unique link addresses.

    摘要翻译: 在包括多个链路级设备和具有多个端口的动态交换机的计算机I / O系统中,每个链路级设施附加到单个端口之一,用于分配唯一链路级别的机制和方法 地址到每个链路级设施。 随着每个链路级设备都在线路上,它发送一个获取链路地址(ALA)帧,并等待响应(ACK)帧。 ALA框架可能针对一般的可能关注的地址,并具有谁是我的来源地址。 只有动态交换机才能正常分配链路地址。 当接收到ALA帧时,动态交换机返回具有分配给ALA帧的发送方的唯一链路地址的ACK帧。 提供了确定是否存在动态切换,或者如果通过动态交换机通过静态连接将链路级设施连接在一起,则为通道的链路级设施分配唯一的链路地址。

    Data processing system including dynamic channel path management
    6.
    发明授权
    Data processing system including dynamic channel path management 失效
    数据处理系统包括动态通道路径管理

    公开(公告)号:US5301323A

    公开(公告)日:1994-04-05

    申请号:US968704

    申请日:1992-10-30

    CPC分类号: G06F15/17375 G06F13/122

    摘要: A large data processing system includes a channel path management program that is periodically executed during operation of the system to gather control unit and subchannel utilization statistics and to monitor such statistics. If the degree of utilization of a channel path or an I/O device exceeds a predetermined threshold value, one or more change(s) is(are) dynamically made in the channel path configuration.

    摘要翻译: 大型数据处理系统包括在系统操作期间周期性执行的信道路径管理程序,以收集控制单元和子信道利用率统计信息并监视此类统计信息。 如果信道路径或I / O设备的利用程度超过预定阈值,则在信道路径配置中动态地进行一个或多个改变。

    Balanced channel finding method
    7.
    发明授权
    Balanced channel finding method 失效
    平衡渠道查找方法

    公开(公告)号:US4435755A

    公开(公告)日:1984-03-06

    申请号:US334991

    申请日:1981-12-28

    申请人: Allan S. Meritt

    发明人: Allan S. Meritt

    IPC分类号: G06F13/12 G06F13/40 G06F3/00

    CPC分类号: G06F13/4022 G06F13/122

    摘要: For a CPU I/O request, the disclosed methods find a physical channel path within a logical channel (LCH) likely to be connectable to a requested device by using channel path count (CAT count) fields. The CAT counts respectively indicate the current number of uncompleted requests accepted by the respective physical channels in the data processing system. An available physical channel in the LCH with the smallest CAT count is found as the candidate channel path for a connection attempt to the requested device. If the lowest CAT count is equal for plural available channel paths, any of these plural channel paths may be selected as the candidate channel path. The CAT count for a channel path is incremented for each successful connection of any device to that channel path. The CAT count for a channel path is decremented upon receiving a signal indicating that a successfully connected I/O device has completed the operation for a request. CAT counts indicate the current load on each physical channel across all LCHs in which the physical channels may be contained. The CAT counts indicate the relative likelihood of the physical channels within a LCH being non-busy relative to each other in order to find the channel path most likely to be non-busy and thereby avoid a RPS miss when a requested DASD record is reached during disk rotation. Choosing the channel paths with the lowest available CAT counts balances the load among the physical channels across all LCHs containing the same physical channel.

    摘要翻译: 对于CPU I / O请求,所公开的方法通过使用信道路径计数(CAT计数)字段找到可能可连接到所请求的设备的逻辑信道(LCH)内的物理信道路径。 CAT计数分别表示数据处理系统中相应物理信道接受的当前未完成请求数。 找到具有最小CAT计数的LCH中的可用物理信道作为到所请求设备的连接尝试的候选信道路径。 如果对于多个可用信道路径,最低的CAT计数相等,则可以选择这些多个信道路径中的任一个作为候选信道路径。 每个成功连接任何设备到该通道路径的通道路径的CAT计数递增。 当接收到指示成功连接的I / O设备已经完成了请求的操作的信号时,通道路径的CAT计数递减。 CAT计数表示跨物理通道可能包含的所有LCH的每个物理信道上的当前负载。 CAT计数指示LCH内的物理信道相对于彼此不相关的相对似然性,以便找到最可能是非忙的信道路径,从而在达到所请求的DASD记录时避免RPS丢失 磁盘旋转。 选择具有最低可用CAT计数的信道路径平衡包含相同物理信道的所有LCH的物理信道之间的负载。

    Method and system for predefined suspension and resumption control over
I/O programs
    10.
    发明授权
    Method and system for predefined suspension and resumption control over I/O programs 失效
    用于I / O程序的预定义暂停和恢复控制的方法和系统

    公开(公告)号:US5613163A

    公开(公告)日:1997-03-18

    申请号:US342459

    申请日:1994-11-18

    IPC分类号: G06F13/12 G06F3/00 G06F3/04

    CPC分类号: G06F13/126

    摘要: Execution of input/output operations is controlled by one or more suspend and/or resume mechanisms. Suspension of an input/output operation is accomplished by one of a number of mechanisms including, for instance, a START SUBCHANNEL instruction with execution limits, a SUSPEND SUBCHANNEL instruction with or without a suspension time limit, or a suspend subchannel channel command word with or without a suspension time limit. Subsequent to suspending execution of a channel program, execution can be resumed automatically or by issuing a RESUME SUBCHANNEL instruction with limits or a resume subchannel channel command word with limits.

    摘要翻译: 输入/输出操作的执行由一个或多个挂起和/或恢复机制控制。 输入/输出操作的暂停通过多种机制中的一种实现,包括例如具有执行限制的START SUBCHANNEL指令,具有或不具有暂停时间限制的SUSPEND SUBCHANNEL指令或具有或不具有暂停时间限制的挂起子通道通道命令字, 没有暂停时间限制。 在暂停执行通道程序之后,可以自动恢复执行,或者通过发出具有限制的恢复子通道指令或具有限制的恢复子通道通道命令字。