于 10/10/14, 7:37 PM, Zhang Haoyu 写道:
Hi,
Is it worthy to introduce a unified co-scheduling mechanism to CFS ?
Because multiple cooperating threads or tasks frequently synchronize
with each other,
not executing them concurrently would only increase the latency of
synchronization.
For example, a thread blocking in spinlock to waiting for another
thread to release the same spinlock
might reduce its waiting time by being executed concurrently with the
thread which hold the same spinlock.
In virtualization scenario, multiple vcpus (which belong to the same
vm) co-scheduling is more desired
when several cooperating threads/task is running in guest.
Is there a plane for this work?
Please refer to gang scheduler.
Regards,
Wanpeng Li
Thanks,
Zhang Haoyu
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