Messages in this thread | | | From | Jason Low <> | Subject | [PATCH 0/3] sched, timer: Improve scalability of itimers | Date | Tue, 14 Apr 2015 16:09:43 -0700 |
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This patchset improves the scalability of itimers, thread_group_cputimer and addresses a performance issue we found while running a database workload where more than 30% of total time is spent in the kernel trying to acquire the thread_group_cputimer spinlock.
While we're modifying sched and timer, patch 1 also updates all existing usages of ACCESS_ONCE with the new READ_ONCE and WRITE_ONCE APIs in those areas.
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