Abstract: The present invention discloses a circuit, a display substrate and a display device, the circuit comprises a plurality of circuit modules, distances of at least one circuit module from two circuit modules adjacent thereto are a first distance and a second distance, respectively, the first distance is smaller than the second distance, and the absolute value of the difference between the second distance and the first distance is not equal to an integer multiple of the first distance. In the present invention, distances of at least one circuit module from two circuit modules adjacent thereto satisfy the above specific condition, so that at least one circuit module can be prevented from being positioned at the middle position of the standing wave field between the two circuit modules adjacent thereto, therefore, interference of standing wave to transmission signals is reduced, and signal distortion and signal attenuation are alleviated.

Abstract: Salvaging event trace information in power loss interruption (PLI) scenarios, for use in solid-state drive (SSD) and hard disk drive (HDD) storage devices. If volatile state information that is salvaged after an inadvertent power loss were to include event trace information, then such information can provide a valuable debug resource. Event trace information from volatile memory is copied to a second memory upon a power on which is in response to a PLI event. A corrupt state of context reconstruction data stored on non-volatile memory is detected, and an indication of the corrupt state is set. The event trace information is passed to the host if requested based on the indication.

Abstract: Probes are employed to inject errors into code. In response to a function-entry trigger event, a probe writes a predefined test value to a return value register. The probe then cause function execution to be skipped such that the test value is returned in lieu of the value which would otherwise be returned by the function. Behavior after the error is injected may then be observed, data collected, etc. such that undesired behavior (e.g., crashes) can be identified and/or corrected. In an alternative embodiment, the probe which is triggered may write a test value to a given memory address.

Abstract: Provided are a computer program product, system, and method for establishing copy pairs from primary volumes to secondary volumes in multiple secondary storage systems for a failover session. For each of the copy pairs, data is mirrored from the primary storage system to the associated secondary storage system in the copy pair. A failure is detected at the primary storage system. Selection is made of a selected secondary storage system of the secondary storage systems in response to detecting the failure, wherein a plurality of the secondary storage systems are available for selection. The selected secondary storage system is indicated as a new primary storage system to which host requests are directed.

Abstract: Methods for invasive debug of a processor without processor execution of instructions are disclosed. As a part of a method, a memory mapped I/O of the processor is accessed using a debug bus and an operation is initiated that causes a debug port to gain access to registers of the processor using the memory mapped I/O. The invasive debug of the processor is executed from the debug port via registers of the processor.

Abstract: A switch apparatus for connecting an arithmetic processing apparatus and a control apparatus that controls the processing apparatus to an I/O apparatus is disclosed, the switch apparatus includes: a switch unit that connects either the processing apparatus or the control apparatus to the I/O; a first input/output control unit that outputs a first command that is received from the processing apparatus to the I/O through the switch unit, receives a response from the I/O that is operated based on the first command, through the switch unit, and outputs the received response to the processing apparatus; and a second input/output control unit that outputs a second command that is received from the control apparatus, to the I/O through the switch unit, receives a test result of the I/O that is tested based on the second command, through the switch unit, and outputs the received test result to the control apparatus.

Abstract: A method includes receiving a signal indicative of a value of a data point associated with a compute device at a first time. The value of the data point includes a data point category that is correlated with a fault category. The compute device is operatively coupled to a record module having a protected mode and an unprotected mode. A signal is received indicative of a value of the data point at a second time, after the first time. When a characteristic of a change in the value of the data point at the first time to value of the data point at the second time crosses a threshold in a first direction, a signal is sent to the record module indicative of an instruction to record data associated with the compute device in the protected mode to define a protected data set.

Abstract: Methods, apparatuses, and computer program products for correcting a failure associated with a current firmware image are provided. Embodiments include a firmware selection module detecting the failure associated with the current firmware image stored in firmware memory corresponding to a component of a system. Embodiments also include the firmware selection module selecting from a plurality of backup firmware images, a replacement firmware image based on a status of at least one backup firmware image in response to detecting the failure. Embodiments also include the firmware selection module storing the selected replacement firmware image in the firmware memory.

Abstract: A distributed database system may implement log-structured distributed storage using a single log sequence number space. A log for a data volume may be maintained in a log-structured distributed storage system. The log may be segmented across multiple protection groups according to a partitioning of user data for the data volume. Updates to the log may be assigned a log sequence number from a log sequence number space for the data volume. A protection group may be determined for an update according to which partition of user data space the update pertains. Metadata to be included with the log record may indicate a previous log sequence number of a log record maintained at the protection group. The log record may be sent to the protection group and identified as committed based on acknowledgments received from storage nodes implementing the protection group.

Abstract: Embodiments detect and group multiple failure events to enable batch processing of those failure events, such as in a virtual datacenter executing a plurality of virtual machines (VMs). A long timer, adaptive short timer, and adaptive polling frequency enable a computing device to efficiently detect and group the failure events that may be related (e.g., resulting from one failure). The grouped failure events are processed in parallel thereby reducing the time for recovery from the failure events.

Abstract: Systems and methods for detecting anomalies within a multi-tenant environment are described. Diagnostic tests are performed on one or more components, such as host computing devices. The one or more components send resulting diagnostic information to an electronic device such as a monitoring component that processes the diagnostic information. The electronic device determines whether one or more properties, such as errors, are comprised within the one or more components. Based at least in part on properties that may be found, a correlation may be made between at least two properties.

Abstract: Methods and apparatus are disclosed to capture error conditions in lightweight virtual machine managers. A disclosed example method includes defining a shared memory structure between the VMM and a virtual machine (VM), when the VM is spawned by the VMM, installing an abort handler on the VM associated with a vector value, in response to detecting an error, transferring VMM state information to the shared memory structure, and invoking the abort handler on the VM to transfer contents of the shared memory structure to a non-volatile memory.

Abstract: In a method for managing serial attached small computer system interface (SAS) expanders using a host computer, the host computer connects to an SAS expander storage system through a redundant array of independent disks (RAID) card. The SAS expander storage system includes a first switch device, a first SAS expander, a second SAS expander, a second switch, a flash memory, and hard disk drives. The method controls the first switch device to switch the RAID card from the first SAS expander to the second SAS expander when the first SAS expander fails to function, controls the second switch device to switch the flash memory from the first SAS expander to the second SAS expander, and controls the first switch device to connect each of the hard disk drives to the second SAS expander.

Abstract: A management system manages a computer system including multiple monitoring-target devices. A storage device of the management system stores a general rule, general plan information, unresolved information, and configuration information. A control device of the management system creates multiple expanded rules based on the general rule and the configuration information, and if an event related to any of the multiple monitoring-target devices has occurred, identifies, based on the multiple expanded rules, a first conclusion event constituting a candidate for the cause of the occurred event, creates, based on the general plan information, one or more expanded plans, which are recovery plans that can be implemented if the first conclusion event is a cause, identifies an unresolved event based on the unresolved information, identifies a risk site based on the identified unresolved event, and displays data showing the first conclusion event, expanded plan, and risk site.

Abstract: An automatic profiling system and method determines an algorithm profile including performance predictability and pricing of a parallel processing algorithm.

Abstract: Management apparatus and method to prevent a drop in the service quality of data. In a computer system which replicates and holds data which is stored in a storage apparatus by a communication terminal in other storage apparatuses, physical position information of the storage apparatuses and the communication terminal is collected and, at the time of the disaster recovery processing, a storage apparatus for which the data of the secondary system is to be switched to the primary system is selected from among the storage apparatuses which hold the data of the secondary system on the basis of physical position information in a first predetermined period among the collected physical position information of the communication terminal, and a policy preconfigured for the data, and an instruction is issued to the selected storage apparatus to switch the data of the secondary system held by the storage apparatus to the primary system.

Abstract: One embodiment of the present invention relates to a system for efficiently annotating numerous crash reports originating from multiple instances of an application. Prior to deploying a version of the application, a service receives a file that stores debugging information associated with the version. Next, the service parses the debugging information from the file. The service then converts the debugging information into an object representation in memory and stores the object representation in a database. Next, in response to an instance of the version crashing on a client device, the service receives a crash report from the client device. Then, for each item in the crash report, the service determines whether that item needs to be annotated and, if so, annotates the item.

Abstract: Embodiments relate to providing communication over cross-coupled links between independently managed compute and storage networks. An aspect includes coupling an independently managed local subsystem with an independently managed remote subsystem over cross-coupled links, whereby each subsystem includes compute entities and storage entities. Unique identifiers are assigned to all the compute entities and the storage entities in the local network and the remote network. A determination is then made as to whether each entity is in the local subsystem or the remote subsystem. Accordingly, a global broadcast tree is built to bridge the compute entities in the local subsystem to the storage entities in both the local and remote subsystem. Responsive to an error in a layer of the local subsystem external to a cross-coupled link, the cross-coupled link in the local subsystem is disabled. Accordingly, the remote subsystem may detect that the link has failed.

Abstract: A method, apparatus and program product implement a failover of a communication channel in a cluster fabric that transfers a state of the communication channel between windows resident in a hardware fabric interface device. The failover is desirably implemented by updating a plurality of mappings between memory resources in a host memory and hardware resources in the fabric interface device, and typically without modifying the memory resources such that involvement of a client that utilizes the communication channel in the failover is minimized or eliminated.