Alex Kogan's on July 17, 2019 12:45 am:
>
>> On Jul 16, 2019, at 7:47 AM, Nicholas Piggin wrote:
>>
>> Alex Kogan's on July 16, 2019 5:25 am:
>>> Our evaluation shows that CNA also improves performance of user
>>> applications that have hot pthread mutexes. Those mutexes are
>>> blocking, and
Alex Kogan's on July 16, 2019 5:25 am:
> Our evaluation shows that CNA also improves performance of user
> applications that have hot pthread mutexes. Those mutexes are
> blocking, and waiting threads park and unpark via the futex
> mechanism in the kernel. Given that kernel futex chains, which
Changes from v2:
- Patch the NUMA-aware qspinlock at the boot time on machines with
multiple NUMA nodes and a kernel compiled with NUMA_AWARE_SPINLOCKS,
as suggested by Peter and Longman.
- CNA queue nodes encapsulate MCS queue nodes, similarly to paravirt nodes,
as suggested by P
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