Speed: XnView on Linux vs. Windows

[disciple]

On Linux I find if I start MP and minimise the window straight away, it takes about 3-4 times as long to load a directory with a lot of files with embedded thumbnails as Windows Xnview does under Wine.
If I don't minimise it then it takes about 50% longer to load than if I do minimise it, so it could be up to 5 to 6 times slower than running the Windows version (not MP) in Wine!
It is also much slower loading a file when I click on it, although this is harder to measure.
The Windows version also has the advantage that you can scroll somewhere while the thumbnails are loading and the thumbnails there will load first

I wonder whether this just means that QT4 is rubbish, or that the actual MP code is less efficient at the moment... I don't have any other QT4 apps, so I can't tell, but I thought it was "supposed" to be faster than QT3, which didn't seem to be particularly slow on my machine (when I used to have QT apps )

[xnview]

Wait the next alpha to test, this version was slow

But to be sure, MP is slower only on startup?

I've made some tests on windows with next alpha (same settings) on a folder with 2665 jpeg files (not in db already):
XnView win => 2 m 15 s
XnView MP => 1 m 42s

[disciple]

Sorry - no, it isn't really that it is slower to startup. It is also slower to load an image and to load the thumbnails if I go to another directory when it is already running. I just mentioned startup because it is also noticeably faster if I minimise it when I startup.
I didn't actually think of minimising it when I browse to a new directory, but I guess that will be faster as well.

[marsh]

Very old topic, but I thought v.0.26mp was faster than v.1.97 at displaying images. ...looking forward to the next test.

[rra]

Just curious:

Does XnviewMP use more then 1 core if available compared to 197.4 which only uses 1 core ?

René

[xnview]

Does XnviewMP use more then 1 core if available compared to 197.4 which only uses 1 core ?

Yes, XnViewMP use more than 1 core if available for rotate/flip/resize/...

[oops66]

...Yes, XnViewMP use more than 1 core if available for rotate/flip/resize/...

Hello, great and good new so XnViewMP is optimized for multi-core processors !