On Tue, Oct 06, 2026 at 08:44:53AM +0100, Alexandre Felipe wrote: > I argue that having S partitions is better in several different ways. > > a. Concurrency of LW_EXCLUSIVE > b. Reduced contention on LWLockWaitListLock > c. Reduced CAS iterations in LWLockAtttemptLock > d. Reduced waits (that implies wait list access and sleeping) > > I included a (pointless) benchmark result.
Your argument would be greatly improved by showing (with numbers) what sorts of benefits this provides in realistic workloads. I briefly looked at benchmark.txt, but I couldn't quite tell what it was meant to show, and you characterized it as pointless, anyway.
Hi Nathan,
The problem is that on a realistic workload on my lightweight laptop
I can't measure observe the LWLock effect at all. So the best I can do
is to remove the realistic part and test them on a tight loop.
I believe that if you are running on a multi-socket machine that would
