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    • 6. 发明授权
    • Power monitoring and reduction for embedded IO processors
    • 嵌入式IO处理器的电源监控和降低功能
    • US06892312B1
    • 2005-05-10
    • US10001518
    • 2001-10-30
    • Stephen B. Johnson
    • Stephen B. Johnson
    • G06F1/20G06F11/30
    • G06F11/3034G06F1/206G06F11/3024G06F11/3041G06F11/3062G06F11/3072Y02D10/16
    • A mechanism is provided for controlling the heat output of a controller by monitoring the temperature of the controller using an embedded heat sensor. The IO processor monitors the temperature and controls the rate of the IO flow to control the temperature. The IO processor accomplishes this by checking the current temperature every time it gets a timer interrupt. If the temperature becomes too high, the IO processor may slow down the processor speeds in the controller. The IO processor may also slow down the throughput by inserting a delay between each IO request processed. Furthermore, the IO processor may slow down the rate at which data is passed onto the bus. Still further, the IO processor may insert a delay between batches of IO requests. By slowing down the IO flow, the IO processor decreases the overall power consumption and, thus, controls the heat output.
    • 提供了一种用于通过使用嵌入式热传感器监视控制器的温度来控制控制器的热输出的机构。 IO处理器监控温度并控制IO流量的速率来控制温度。 IO处理器通过在每次获得定时器中断时检查当前温度来完成此操作。 如果温度过高,IO处理器可能会降低控制器中的处理器速度。 IO处理器还可能通过在处理的每个IO请求之间插入延迟来降低吞吐量。 此外,IO处理器可能会降低数据传输到总线上的速率。 此外,IO处理器可以在批次的IO请求之间插入延迟。 通过减慢IO流量,IO处理器降低总体功耗,从而控制热量输出。
    • 9. 发明授权
    • Method of responding to I/O request and associated reply descriptor
    • 响应I / O请求和相关回复描述符的方法
    • US06591310B1
    • 2003-07-08
    • US09569715
    • 2000-05-11
    • Stephen B. Johnson
    • Stephen B. Johnson
    • G06F1314
    • G06F13/387
    • A reply descriptor for transmission over an I/O message passing medium in response to a corresponding request message, the descriptor comprises at least one indication field that can function as a ‘flag’ to identify its type, and a content field; whereby a reply message is generated only if at least one predefined condition is not met and the content field will, accordingly, comprise information of that reply message's storage location. The content field to comprise data copied from the I/O request message if each predefined condition is met. A method of responding over an I/O message passing medium to a request message comprising the steps of: generating a reply message to the request message only if at least one predefined condition is not met; generating a reply descriptor having at least one indication field and a content field; whereby the content field comprises information of the reply message's storage location if so generated. Also, a program code on a computer readable storage medium comprising: a first program sub-code for generating a reply message to a corresponding I/O request message only if at least one predefined condition is not met. The first program sub-code comprising instructions for generating a reply descriptor having at least one indication field and a content field that comprises information of the reply message's storage location if said reply message is so generated.
    • 一种用于响应于相应的请求消息在I / O消息传递介质上进行传输的应答描述符,所述描述符包括至少一个指示字段,该至少一个指示字段可以用作识别其类型的“标志”,以及内容字段; 只有在不满足至少一个预定义条件且内容字段将相应地包含该应答消息的存储位置的信息时才产生消息。如果满足每个预定条件,则包括从I / O请求消息复制的数据的内容字段 一种通过I / O消息传递介质对请求消息进行响应的方法,包括以下步骤:只有在不满足至少一个预定义条件时,才向请求消息生成应答消息;产生具有至少一个指示的应答描述符 字段和内容字段;其中内容字段包括答复消息的存储位置的信息,如果这样生成的。此外,计算机可读存储器上的程序代码 e介质,包括:只有在不满足至少一个预定义条件时,才产生对应的I / O请求消息的应答消息的第一程序子代码。 所述第一节目子代码包括用于生成具有至少一个指示字段的应答描述符的指令和如果所述应答消息被生成则包括回复消息的存储位置的信息的内容字段。
    • 10. 发明授权
    • Fast path SCSI IO
    • 快速路径SCSI IO
    • US08230134B2
    • 2012-07-24
    • US12765027
    • 2010-04-22
    • Stephen B. JohnsonTimothy E. Hoglund
    • Stephen B. JohnsonTimothy E. Hoglund
    • G06F13/28
    • G06F13/28Y02D10/14
    • A hardware automated IO path, comprising a message transport unit for transporting an IO request to a local memory via a DMA operation and determining a LMID for associating with a request descriptor of the IO request; a fastpath engine for validating the request descriptor and creating a fastpath descriptor based on the request descriptor; a data access module for performing an IO operation based on the fastpath descriptor and posting a completion message into the fastpath completion queue upon a successful completion of the IO operation. The fastpath engine is further configured for: receiving the completion message, releasing the IO request stored in the local memory, and providing a reply message based on the completion message. The message transport unit is further configured for providing the reply message in response to the IO request.
    • 一种硬件自动IO路径,包括用于经由DMA操作将IO请求传送到本地存储器并确定用于与所述IO请求的请求描述符相关联的LMID的消息传输单元; 用于验证请求描述符并基于请求描述符创建快速路径描述符的快速引擎; 数据访问模块,用于在成功完成IO操作时,基于快速路径描述符执行IO操作并将完成消息发布到快速路径完成队列中。 快速引擎还被配置为:接收完成消息,释放存储在本地存储器中的IO请求,以及基于完成消息提供回复消息。 消息传送单元还被配置为响应于IO请求来提供应答消息。