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[Bug nptl/23962] Very high overhead of pthread_spin_lock on multi-node NUMA systems
- From: "hjl.tools at gmail dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Fri, 07 Dec 2018 18:43:31 +0000
- Subject: [Bug nptl/23962] Very high overhead of pthread_spin_lock on multi-node NUMA systems
- Auto-submitted: auto-generated
- References: <bug-23962-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=23962
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Carlos O'Donell from comment #1)
> (In reply to H.J. Lu from comment #0)
> > Created attachment 11437 [details]
> > A workload with pthread_spin_lock
> >
> > This workload with pthread_spin_lock shows that:
>
> ... what is the solution? Implement MCS locks in userspace using per-cpu
> data?
We are working on a solution which will use my new getcpu wrapper.
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