Branch: refs/heads/smoke-me/tonyc/21654-N-squared-slow
Home: https://github.com/Perl/perl5
Commit: 55b0882f99bb41f26378e91d619e77707a044e74
https://github.com/Perl/perl5/commit/55b0882f99bb41f26378e91d619e77707a044e74
Author: Tony Cook <t...@develop-help.com>
Date: 2023-11-27 (Mon, 27 Nov 2023)
Changed paths:
M MANIFEST
A t/perf/tmps.t
Log Message:
-----------
TODO test the performance of growing the tmps stack
Commit: 7a28defe93b9bb8f3944648692c5d01ac486aed1
https://github.com/Perl/perl5/commit/7a28defe93b9bb8f3944648692c5d01ac486aed1
Author: Tony Cook <t...@develop-help.com>
Date: 2023-11-27 (Mon, 27 Nov 2023)
Changed paths:
M scope.c
M t/perf/tmps.t
Log Message:
-----------
grow the tmps (mortal) stack exponentially rather than linearly
As with the value stack and the save stack, this gives us constant
amortized growth per element.
After this patch the profiler shows the "SvPV_shrink_to_cur(sv)"
and "sv = sv_2mortal(newSV(80))" calls in do_readline as the
hotspots for the io unheated test case, using 55% of the measured
time in total.
Fixes #21654
Compare: https://github.com/Perl/perl5/compare/55b0882f99bb%5E...7a28defe93b9
