systemtap release 4.4

Craig Ringer craig@2ndquadrant.com
Thu Dec 10 03:55:00 GMT 2020


On Tue, 10 Nov 2020 at 11:37, Frank Ch. Eigler via Systemtap <
systemtap@sourceware.org> wrote:


> - 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.

Thankyou.


-- 
 Craig Ringer                   http://www.2ndQuadrant.com/
 2ndQuadrant - PostgreSQL Solutions for the Enterprise


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