systemtap release 4.4

Craig Ringer
Thu Dec 10 03:55:00 GMT 2020

On Tue, 10 Nov 2020 at 11:37, Frank Ch. Eigler via Systemtap <> 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.


 Craig Ringer         
 2ndQuadrant - PostgreSQL Solutions for the Enterprise

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