bugGNU Octave - Bugs: bug #50182, 100% slowdown in FLTK graphics...


bug #50182: 100% slowdown in FLTK graphics between 4.2.0 and dev

Submitted by:  Rik <rik5>
Submitted on:  Sun 29 Jan 2017 07:35:09 PM UTC  
Category:  Performance Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Regression
Status:  None Assigned to:  None
Originator Name:  Open/Closed:  Open
Release:  dev Operating System:  GNU/Linux

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Sun 29 Jan 2017 09:35:59 PM UTC, comment #3:

I compiled
HG ID for this build is "868daa374c49"
on i7-2600k

4.2.0 Elapsed time is 0.566659 seconds.
4.3.0+ : 0.623327

There is a slowdown, it just does not look as drastic.


Dmitri A. Sergatskov <dasergatskov>
Sun 29 Jan 2017 08:52:19 PM UTC, comment #2:

Okay. It may be just my machine. Hopefully a few other people will report their performance numbers and we can tell for sure.

Rik <rik5>
Project Administrator
Sun 29 Jan 2017 08:44:10 PM UTC, comment #1:

I have 0.46 (4.3.0+) sec vs 0.43 (4.2.0) on AMD with Gallium driver (this is on my buildbot computer).

0.56 sec (4.2.0) on intel i7-2600k (w/ intel graphics).


Dmitri A. Sergatskov <dasergatskov>
Sun 29 Jan 2017 07:35:09 PM UTC, original submission:

This seems odd. I ran the following test sequence

Development branch, cset 23116:868daa374c49

The graphics toolkit used is FLTK, and the time is ~740 milliseconds.

Running the same sequence with the stable version of Octave

yields a time of ~290 milliseconds.

Rik <rik5>
Project Administrator


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