Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for monitoring performance of computing systems. In some implementations, a set of tasks for a server system to perform is identified. Multiple performance testing cycles are performed, in which each of the performance testing cycles includes: sending, for each task in the set of tasks, a request for the server system to perform the task; receiving a response from the server system for each of the requests, and storing a performance measure for each of the tasks based on the response received from the server system for the task. Based on the performance measures for the multiple performance testing cycles, an evaluation is performed whether conditions are satisfied for adjusting one or more operating parameters of the server system or for providing a notification regarding the operation of the server system.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for monitoring performance of computing systems. In some implementations, a set of tasks for a server system to perform is identified. Multiple performance testing cycles are performed, in which each of the performance testing cycles includes: sending, for each task in the set of tasks, a request for the server system to perform the task; receiving a response from the server system for each of the requests, and storing a performance measure for each of the tasks based on the response received from the server system for the task. Based on the performance measures for the multiple performance testing cycles, an evaluation is performed whether conditions are satisfied for adjusting one or more operating parameters of the server system or for providing a notification regarding the operation of the server system.

A fault diagnosis system is disclosed, including: a control unit, a first management board, a first pull-up unit, a second pull-up unit, a first pull-up switch, a second pull-up switch, and at least one central processing unit, the control unit is configured to receive physical partitioning information sent by the first management board, the first pull-up unit and the second pull-up unit are configured to pull up a fault indication signal of a fault diagnosis path to obtain a target signal, the first management board is configured to detect whether a level of the target signal is lower than a diagnosis threshold, and when the level of the target signal is lower than the diagnosis threshold, determine that a faulty central processing unit exists in the at least one central processing unit.

A fault diagnosis system is disclosed, including: a control unit, a first management board, a first pull-up unit, a second pull-up unit, a first pull-up switch, a second pull-up switch, and at least one central processing unit, the control unit is configured to receive physical partitioning information sent by the first management board, the first pull-up unit and the second pull-up unit are configured to pull up a fault indication signal of a fault diagnosis path to obtain a target signal, the first management board is configured to detect whether a level of the target signal is lower than a diagnosis threshold, and when the level of the target signal is lower than the diagnosis threshold, determine that a faulty central processing unit exists in the at least one central processing unit.

A computing system can comprise a processing resource and a memory device coupled together via a first transmission link. The processing resource can be configured to test the first transmission link in response to the memory device failing to execute a command by sending the command to the memory device again for retry and monitoring the first transmission link for signals that indicate whether the command was executed by the memory device.

A computing system can comprise a processing resource and a memory device coupled together via a first transmission link. The processing resource can be configured to test the first transmission link in response to the memory device failing to execute a command by sending the command to the memory device again for retry and monitoring the first transmission link for signals that indicate whether the command was executed by the memory device.

Methods and systems for updating configurations. An application can be determined to be incorrectly configured. A request can be sent to update a configuration property. The configuration property can be updated in a test environment. The application can be tested with the updated configuration property in the test environment. The test of the application with the updated configuration property in the test environment can be identified as successful. An incorrect configuration of the application can be updated.

Disclosed are systems, methods, and computer-readable media for inspecting mobile devices. In one embodiment, a method is disclosed comprising executing a de-trash operation on a mobile device, the de-trash operation resulting in the removal of extraneous material attached to the mobile device; categorizing an operating system of the mobile device; connecting the mobile device to a reading device and installing one or more software applications on the mobile device, the one or more software application operable to read one or more identifiers from the mobile device; visually inspecting the mobile device and classifying the physical condition of the mobile device; performing a functional test on the mobile device upon determining that the physical condition of the mobile device is free of defects; and removing all test data from the mobile device after performing the functional test and flashing the mobile device with a new operating system image.

Aspects of the invention include receiving system data associated with a first system, the first system comprising a plurality of system components, wherein the system data comprises component data for each system component in the plurality of system components, obtaining historical performance data for each system component in the plurality of system components, determining at least one testing constraint associated with the first system, determining a test environment for the first system, the test environment comprising a plurality of test cases for the first system based on the system data, the historical performance data, and the at least one testing constraint, and executing the test environment on the first system.

Aspects of the invention include receiving system data associated with a first system, the first system comprising a plurality of system components, wherein the system data comprises component data for each system component in the plurality of system components, obtaining historical performance data for each system component in the plurality of system components, determining at least one testing constraint associated with the first system, determining a test environment for the first system, the test environment comprising a plurality of test cases for the first system based on the system data, the historical performance data, and the at least one testing constraint, and executing the test environment on the first system.