Alibaba Group Holding Limited

Lingjun Chen

Bin Wang

Xu Zeng

Liangliang Zhu

Zilong Liu

Junjie Cai

A tracking method, an apparatus, a device, and a machine-readable medium are provided. The method specifically includes: writing a tracking result of an activity of an operating system and/or a running activity of a program into a buffer when an interrupt is disabled; and reading and sending the tracking result from the buffer when the interrupt is enabled. The embodiments of the present disclosure can effectively shorten the maximum time during which interrupts are disabled for an operating system, and thereby can effectively improve the performance of the operating system and/or a program.

Tracking method, apparatus, device, and machine-readable medium

Embodiments of the disclosure provide methods and systems for managing resources of a plurality of devices coupled to a server. The method can include acquiring statistical information of the resources of the plurality of devices; determining whether a trigger condition is met; and in response to the determination that trigger condition is met, generating a resource optimization solution for the plurality of devices based on the statistical information.

Resource optimization and update method, server, and device

In a multitask computing system, there are multiple tasks include a first task, a second task, and a third task, and the first task has a higher priority than that of the second task and the third task. A method including raising the priority of the second task that shares a first critical section with the first task and is accessing the first critical section when the first task is blocked due to failure to access the first critical section; determining whether there is a third task that shares a second critical section with the second task and is accessing the second critical section; and raising, when the third task is present, the priority of the third task. The techniques of the present disclosure prevent a low-priority third task from delaying the execution of a second task, thus avoiding the priority inversion caused by the delayed execution of a high-priority first task.

Task priority processing method and processing device

A method and an apparatus for setting a time for a tick interrupt are disclosed. The method includes performing a compensation for a system time when a tick interrupt is executed; setting a time of a next tick interrupt according to a timeout task and a compensated system time if the timeout task exists when the tick interrupt is executed; and when a system enters into a low power mode after the tick interrupt is executed, correcting the time of the next tick interrupt according to the timeout task that is updated when the low power mode is entered. The present disclosure can decouple logic relationships between tick interrupts and Idle tasks, thereby reduces the number of division operations that involve rounding, reduces such accumulated error associated with compensation time, and improves the accuracy of the system time, as compared to the existing technologies.

Clock tick interrupt configuration method and apparatus

Methods and an apparatus for communication between processes are provided. A first process obtains an original message to be sent, where the original message includes a message header and a message body. The first process determines the length of the message header and the length of the message body of the original message to be sent. The first process compresses the length of the message header according to the length of the message header and the length of the message body to obtain a compressed message. The first process adds the compressed message to a message queue pre-created for a second process, where the second process is configured to obtain the compressed message from the message queue.

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Hangzhou, China

Lingjun Chen