The efficiency of DFKI Oz 2.0 has been significantly improved over DFKI Oz 1.1. Roughly spoken, most programs will almost run twice as fast in Oz 2.0 than in Oz 1.1.
Below you find timings that compare both systems. The numbers are given as operations per second. The numbers were taken on on a Sun Sparc 20 (712/128MB) running Solaris 2.5.1 using the following programs (Oz-Version of the programs).
| Expression | Oz 2.0 µsec | Oz 2.0 [#/sec] | Oz 1.1 [#/sec] | |
|---|---|---|---|---|
| Procedure Application | ||||
{P} (Optimized) |
0.5 | 2,000,000 | 1,150,000 | |
{P 1} (Optimized) |
0.6 | 1,700,000 | 1,000,000 | |
{P 1 1} (Optimized) |
0.7 | 1,400,000 | 930,000 | |
{X} (Unoptimized) |
1.0 | 1,000,000 | 820,000 | |
| Builtin Application | ||||
1+1 (Single Argument) |
0.5 | 1,800,000 | 1,600,000 | |
10+10 |
0.8 | 1,300,000 | 700,000 | |
10.0*10.0 |
0.9 | 1,100,000 | 900,000 | |
| Environment Allocation | ||||
local X in |
0.4 | 2,600,000 | 2,600,000 | |
| Conditionals | ||||
case X of a |
0.3 | 4,000,000 | 1,100,000 | |
case X of a [] b [] c |
0.5 | 2,000,000 | 850,000 | |
| Exceptions | ||||
try skip catch |
0.7 | 1,400,000 | - | |
try skip finally |
2.0 | 480,000 | - | |
| Threads | ||||
thread skip |
6.7 | 150,000 | 100,000 | |
thread {Wait _} |
9.2 | 110,000 | 70,000 | |
| Cells | ||||
{Exchange C C C} |
1.7 | 590,000 | 390,000 | |
| Locks | ||||
lock L then skip |
1.5 | 670,000 | - | |
| Objects | ||||
C,noop |
0.5 | 2,000,000 | 350,000 | |
{self noop} |
1.1 | 900,000 | 320,000 | |
{O noop} |
1.3 | 780,000 | 320,000 | |
_={New C noop} |
6.0 | 170,000 | 10,000 | |
_=@a |
0.3 | 3,300,000 | 800,000 | |
a<-X |
0.3 | 3,200,000 | 900,000 | |