systemtap release 4.4
Thu Dec 10 03:55:00 GMT 2020
On Tue, 10 Nov 2020 at 11:37, Frank Ch. Eigler via Systemtap <
> - The locks required to protect concurrent access to global variables
> has been optimized with a "pushdown" algorithm, so that they span
> the smallest possible critical region. Formerly, and with
> --compatible=4.3, locks always spanned the entire probe handler.
> Lock pushdown means much greater potential concurrency between
> probes running on different CPUs.
Wow. That's amazing.
Craig Ringer http://www.2ndQuadrant.com/
2ndQuadrant - PostgreSQL Solutions for the Enterprise
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