[fpc-devel] @Gareth - Feedback on optimizations
lazarus at mfriebe.de
Sun Jan 9 18:59:58 CET 2022
Just thought this may be interesting.
Though the results are for "eyeballing" at best -- see the video linked
in Jonas' recent mail:
I run my FpDebug test case with 3.2.3 and 3.3.1 (both early Dec)
The test runs about 15 secs (evaluating approx 70k watches).
The test was done with a modified FpDebug for single threaded execution
(threaded results are similar, but have more variance)
Tests done with
FPC 3.2.3 -O2 : 14.1 - 14.3 sec
FPC 3.3.1 -O2 : 13.3 - 13.5 sec
FPC 3.2.3 -O-1 -gw3 : 15.0 - 15.2 sec
FPC 3.3.1 -O-1 -gw3 : 14.3 - 14.5 sec
So on my PC, with this particular compilation setting the speedup
(intentional plus side-effects) is 4 to 5 percent.
Win 64 bit
Can't do 3.2.2 or 3.2.0 as they have that bug, that crashes fpdebug.
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