[SOLVED] Lazarus apps very slow on linux

[Codrut1001]

I was testing out the lazarus IDE on my linux machine and I noticed that compiled apps run very slowly, even when I run them outside the IDE. I also noticed that upon opening the apps with sudo permisions they load instantly.

This slow performance really makes them hard to use.

I was wondering what is causing this? Is there a way to make them load instantly without hanging?

They usually hang for 15 seconds then they can be interacted with.

Solution can be found here:

https://askubuntu.com/questions/1184774/some-applications-on-ubuntu-19-10-very-slow-to-start

Thanks af0815 for the solution!

[MarkMLl]

No problem here. Tell us more about your system (what distro, distro version, kernel version, display manager AKA desktop environment) and development environment (Lazarus and FPC versions, which widget set you're compiling for).

Also consider whether there's anything in your app which makes it inherently problematic, e.g. it's trying to make an unsatisfied DNS lookup during startup.

Can you attach a test program so that others can duplicate your problem?

MarkMLl

[zeljko]

Qt4 is known to be slow if printers4lazarus is included because of bug in qt library.

[af0815]

Maybe
https://forum.lazarus.freepascal.org/index.php?topic=49591.0
https://forum.lazarus.freepascal.org/index.php?topic=51016.0
not only Lazarus can be affected, the apps too