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[Octave-bug-tracker] [bug #60984] Load function on Windows is significan
From: |
Maxim Smolskij |
Subject: |
[Octave-bug-tracker] [bug #60984] Load function on Windows is significantly slower than on Linux |
Date: |
Wed, 28 Jul 2021 15:01:38 -0400 (EDT) |
User-agent: |
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36 |
URL:
<https://savannah.gnu.org/bugs/?60984>
Summary: Load function on Windows is significantly slower
than on Linux
Project: GNU Octave
Submitted by: mithridat
Submitted on: Ср 28 июл 2021 19:01:37
Category: Performance
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Performance
Status: None
Assigned to: None
Originator Name: Mithridat
Originator Email:
Open/Closed: Open
Release: 6.2.0
Discussion Lock: Any
Operating System: Microsoft Windows
_______________________________________________________
Details:
I ran following script on GNU Octave, version 6.2.0:
tic
A = rand(1000, 1000);
toc
tic
save(‘A.txt’, ‘A’);
toc
tic
B = load(‘A.txt’);
toc
And got following results:
Windows 10:
Elapsed time is 0.010767 seconds.
Elapsed time is 1.90084 seconds.
Elapsed time is 19.3035 seconds.
Ubuntu 20.04:
Elapsed time is 0.011447 seconds.
Elapsed time is 0.636885 seconds.
Elapsed time is 0.873379 seconds.
So, on Windows load function is more than 20 times slower than on Linux (20
seconds vs. 1 second).
For binary files got following results:
Windows 10:
Elapsed time is 0.012146 seconds.
Elapsed time is 0.00397396 seconds.
Elapsed time is 0.0132461 seconds.
Ubuntu 20.04:
Elapsed time is 0.019496 seconds.
Elapsed time is 0.00729489 seconds.
Elapsed time is 0.00489092 seconds.
So, it’s hundreds of times faster than for text files, there are almost
equal results for both operation systems and file size decreased from 20
megabytes to 8 megabytes.
Can anyone please express his ideas about such huge advantage of binary files
over text files and what Windows delay for text files may be related with?
(and can this delay be significantly reduced?)
_______________________________________________________
Reply to this item at:
<https://savannah.gnu.org/bugs/?60984>
_______________________________________________
Сообщение отправлено по Savannah
https://savannah.gnu.org/
- [Octave-bug-tracker] [bug #60984] Load function on Windows is significantly slower than on Linux,
Maxim Smolskij <=
- [Octave-bug-tracker] [bug #60984] Load function on Windows is significantly slower than on Linux, anonymous, 2021/07/28
- [Octave-bug-tracker] [bug #60984] Load function on Windows is significantly slower than on Linux, Rik, 2021/07/29
- [Octave-bug-tracker] [bug #60984] Load function on Windows is significantly slower than on Linux, John W. Eaton, 2021/07/29
- [Octave-bug-tracker] [bug #60984] Load function on Windows is significantly slower than on Linux, Rik, 2021/07/29
- [Octave-bug-tracker] [bug #60984] Load function on Windows is significantly slower than on Linux, Maxim Smolskij, 2021/07/29
- [Octave-bug-tracker] [bug #60984] Load function on Windows is significantly slower than on Linux, Rik, 2021/07/29
- [Octave-bug-tracker] [bug #60984] Load function on Windows is significantly slower than on Linux, Charles Praplan, 2021/07/30
- [Octave-bug-tracker] [bug #60984] Load function on Windows is significantly slower than on Linux, Rik, 2021/07/30
- [Octave-bug-tracker] [bug #60984] Load function on Windows is significantly slower than on Linux, Markus Mützel, 2021/07/30
- [Octave-bug-tracker] [bug #60984] Load function on Windows is significantly slower than on Linux, Rik, 2021/07/30