[Octave-bug-tracker] [bug #58564] classdef instance field access painfully slow vs. struct field access

[Andrew Janke]

Follow-up Comment #5, bug #58564 (project octave):

I added Octave compatibility to my matlab-bench suite:
https://github.com/apjanke/matlab-bench

Here's what I get:


octave:4> bench_matlab_nops

Matlab R on x86_64-apple-darwin18.7.0
Matlab 5.2.0 / Java 13.0.2 on x86_64-apple-darwin18.7.0 Mac OS X 10.14.6
(angharad)
Machine: ???, ??? GB RAM
nIters = 100000

Java tests errored: [java] java.lang.IllegalAccessException: class
org.octave.ClassHelper cannot access a member of class
net.apjanke.matlab_bench.bench_nops.DummyJavaClass with modifiers "public".
Skipping.
MEX tests errored: 'mexnop' undefined near line 367 column 9. Skipping.
Operation                        Time (�sec)
nop() function:                         4.86
nop() subfunction:                      3.70
@()[] anonymous function:               4.87
nop(obj) method:                        7.68
nop() private fcn on @class:            4.05
classdef nop(obj):                     11.25
classdef obj.nop():                    10.19
classdef pivate_nop(obj):              12.02
classdef class.static_nop():           10.11
classdef constant:                      6.83
classdef property:                      7.68
classdef property with getter:         22.44
+pkg.nop() function:                   11.21
+pkg.nop() from inside +pkg:           10.25
feval('nop'):                           8.83
feval(@nop):                            8.20
eval('nop'):                           16.42
Java tests errored: [java] java.lang.IllegalAccessException: class
org.octave.ClassHelper cannot access a member of class
net.apjanke.matlab_bench.bench_nops.DummyJavaClass with modifiers "public".
Skipping.
MEX tests errored: 'mexnop' undefined near line 367 column 9. Skipping.
builtin j():                            3.92
struct s.foo field access:              2.79
isempty(persistent):                    4.88


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