why is the latest QB64 so slow?

[jack]

I just downloaded both the stable and dev versions for Windows and run a simple test posted by [banned user] at the old Joyful Programmer/QB64 forum
since the forum is not available, I post his test here
the times were about 12+ seconds, I then downloaded SMcNeill's 64-bit build http://qb64.freeforums.net/thread/100/qb64-x64-10-17-2018 and the times were about 0.5 seconds

Code: QB64: [Select]

1. '' by [banned user]
2. CONST NumOfTests = 7
3. DIM x AS DOUBLE, y AS DOUBLE
4. DIM i AS LONG
5. DIM Time AS DOUBLE
6.  
7. PRINT
8. FOR ttt = 1 TO NumOfTests
9.     PRINT "START TEST #1:";
10.  
11.     x = 1.234567
12.     y = 2.345678
13.     Time = TIMER
14.     FOR i = 1 TO 100000000
15.         x = x * y
16.     NEXT
17.     Time = TIMER - Time
18.     PRINT "THE TEST TOOK"; Time; " seconds"
19. NEXT
20.  
21. PRINT
22. FOR ttt = 1 TO NumOfTests
23.     PRINT "START TEST #2:";
24.  
25.     x = 1.234567
26.     y = 2.345678
27.  
28.     Time = TIMER
29.     $CHECKING:OFF
30.  
31.     FOR i = 1 TO 100000000
32.         x = x * y
33.     NEXT
34.  
35.     $CHECKING:ON
36.     Time = TIMER - Time
37.  
38.     PRINT "THE TEST TOOK"; Time; " seconds"
39. NEXT
40.  
41. PRINT
42. FOR ttt = 1 TO NumOfTests
43.  
44.     PRINT "START TEST #3:";
45.  
46.     x = 1.234567
47.     y = 2.345678
48.  
49.     Time = TIMER
50.     $CHECKING:OFF
51.  
52.     i = 1
53.  
54.     WHILE i <= 100000000
55.         x = x * y
56.         i = i + 1
57.     WEND
58.  
59.     $CHECKING:ON
60.     Time = TIMER - Time
61.  
62.     PRINT "THE TEST TOOK"; Time; " seconds"
63. NEXT
64.  

[Cobalt]

My Copy of QB64's(32bit) test results.

[Petr]

I also have no problems with speed. The only option that comes to my mind is whether your tests have been run on a laptop where power management has reduced performance. My ThinkPad does this because it has a battery in a critical state of emergency (I did not have run this test on it).

[jack]

please test with the latest QB64 version for Windows, either stable or dev, as that is the version with the speed problem.

[Petr]

Re-tested in latest development build 2018-12-02-23-33-01. Is up to .2 sec slower

[jack]

don't understand why it's slow here
the second screenshot is from a version 2016-9-5

[bplus]

I can confirm Jack's results:

hmm... I tried to access Help > About for my version of QB64 x32 (not latest? but still crappy time) and that version refused to put up the Help > About window to display version with the results of the test like shown in last screen shot.

[Cobalt]

I get nearly identical run times, with in .05 seconds of each other, if I ran it a few hundred times they would probably be exact.
you guys have heck of a lot faster machines than mine from those screen shots. I only run windows, granted Windows VISTA.
Screen shot of slightly different times, and the build from 2018-12-2-23-33-01

[xra7en]

man you guys are fast - whats the complaint about?

im on my thinkpad w530,16gb RAM i7 2.7GHz

and this is what I got.

[jack]

man you guys are fast - whats the complaint about?

im on my thinkpad w530,16gb RAM i7 2.7GHz

and this is what I got.

the complaint is that this not normal, something is very wrong

[xra7en]

man you guys are fast - whats the complaint about?

im on my thinkpad w530,16gb RAM i7 2.7GHz

and this is what I got.

the complaint is that this not normal, something is very wrong

Interesting.. I am a little confused then, if most here are getting a .xxx  which is processing pretty fast, and then others are getting 10+.xx which is slow, are the results supposed to be a little more closer together?

[jack]

if you are getting 10+.xx then it probably should be less than 0.5 seconds
please try SMcNeill's 64-bit build http://qb64.freeforums.net/thread/100/qb64-x64-10-17-2018

[bplus]

Yes xra7en, you are getting 10 secs with thinkpad where I am getting 12 secs with laptop (with newer defective? QB64 version).

I agree with Jack, try SMcNeill's 64-bit QB64 (if thinkpad does 64 bit) and watch times drop below .5 secs.

[SMcNeill]

QB64x64 has always been marginally faster for me, but not by the difference specified.  I don’t have a clue as to what might’ve changed to reduce execution speeds so greatly, but I’ll do some testing later and you you guys know what results I’m getting as well.  ;)

[xra7en]

BIG DIFF for me..

Rev 20180228/86

EDIT: ADDED SPECS
Core i7 3720QM - 16 GB RAM - 2TB HDD @2.70GHz (thinkpad w530 laptop)