Hewlett-packard Development Company, L.p.

Swapneel Kekre

Scott J Norton

Hyun Duk Kim

Douglas Vincent Larson

Vasudevan Sangili

Harshadrai Parekh

Chukwuma Valentine Akpuokwe

Colin Edward Honess

A system for asynchronous process sleep or wake management and corresponding methods thereof are described. The system comprises a sleep queue hash table, a process, and a first sleep object and a second sleep object. The first and second sleep objects each comprise a sleep queue and each of the first and second sleep objects are associated with the process. The system further comprises one or more kernel-space processes arranged to perform at least one of associating the first sleep object with the sleep queue hash table and designating the second sleep object to be used for sleeping the process.

Asynchronous wakeup mechanism that places reference to process on sleep queue if execution of copyout functionality is caused to sleep

Systems, methods, and devices, including computer executable instructions for transferring threads are described. The method comprises determining an idle processor by checking a handoff state of the processor prior to placing an identified runnable thread in a run queue of an idle processor. The method also comprises transferring the runnable thread to a determined idle processor by setting the handoff state of the processor to a handle of the runnable thread.

Thread hand off

An arrangement, in a computer system, for coordinating scheduling of threads on a plurality of processor sets (PSETs). The arrangement includes a first processor set (PSET) having a first set of scheduling resources, the first set of scheduling resources. The arrangement further includes a second processor set (PSET) having a second set of scheduling resources. The first set of scheduling resources is configured to schedule threads assigned to the first PSET only among processors of the first PSET, and the second set of scheduling resources is configured to schedule threads assigned to the second PSET only among processors of the second PSET.

Per processor set scheduling

A method in a computer system for coordinating scheduling of threads among a plurality of processors. The method includes collecting, using a cooperative scheduling component (CSC), system data pertaining to the plurality of processors. The method further includes calculating, using the CSC, unified scheduling-related parameters (USRPs) from the system data. The method additionally includes furnishing the USRPs from the CSC to at least two of a thread launcher, a thread balancer, and a thread stealer, whereby at least two of the thread launcher, the thread balancer, and the thread stealer employ the USRPs to perform their respective scheduling-related tasks.

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Sunnyvale, CA, United States of America

Swapneel Kekre