On 2025-04-03 13:59, Mathieu Desnoyers wrote:
On 2025-04-02 20:00, Shakeel Butt wrote:
On Mon, Mar 31, 2025 at 06:35:14PM -0400, Sweet Tea Dorminy wrote:
[...]
I am still not buying the 'good performance' point. To me we might need
to go with reduced batch size of existing approach or multi level
approach from Mathieu (I still have to see Mateusz and Kairui's
proposals).
Here is an initial userspace prototype of my hierarchical split counters:
https://github.com/compudj/librseq/blob/percpu-counter/include/rseq/
percpu-counter.h
https://github.com/compudj/librseq/blob/percpu-counter/src/percpu-counter.c
I've updated my branches to use unsigned long counters rather than
signed. This eliminates tricky 32-bit/64-bit overflow corner-cases and
should not have significant impact in practice.
Thanks,
Mathieu
--
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com
