Linux Editor launching too slow

vicentecarro · March 21, 2016, 10:16pm

In windows the editor takes, in my machine, around 10 seconds to load from the launcher.
But in Linux it takes easily 3 minutes or more.
Why? And what’s is more important, Are you working to fix this?

RCL · May 19, 2016, 5:12pm

Do you launch with hot DerivedDataCache or not? I.e. are you seeing messages about compiling shaders?

brothermechanic · May 19, 2016, 4:45pm

Same for me
(gentoo amd64)
In windows on this machine UE runs mutch faster!

Slonopotamus · June 12, 2016, 11:19am

I’m also experiencing this problem on 4.12 (seems like a regression). Shaders are definitely not the cause, UE4Editor -server is also slow (several mins to start an empty map!)

iSpakkio · June 12, 2016, 4:13pm

Having the same issue here. The editor takes up to 3 minutes to start up on Ubuntu 16.04.

Everything else works fine.

Any workaround?

anonymous_user_814fc06a · June 12, 2016, 5:14pm

It also takes me 2 minutes to start on Arch with shaders already compiled, here’s my startup output.

Sounds like most of the time is spent on “asset discovery”:

LogAssetRegistry: Asset discovery search completed in 110.9584 seconds

RCL · June 13, 2016, 9:24pm

We time’d startup of the editor in 4.11 and 4.12 and there indeed seems to be an almost 2x regression. Haven’t narrowed it down though.

Slonopotamus · July 6, 2016, 2:08pm

3.5 months since this issue was reported… Any news?

anonymous_user_26b08130 · July 8, 2016, 4:29pm

Unreal 4.14 editor takes about 3min to open on Ubuntu 10.04, Then when you open a project it starts loading the whole editor again…
This makes it 6 min to start using anything.
And no resolution yet…

Back to using Unity…

anonymous_user_87ccf054 · July 24, 2016, 6:20pm

I have the same problem on my Ubuntu 16.04 Laptop. My Projects takes up to 3 times as long as on my windows machine. I’m using 4.12.5.

anonymous_user_34882162 · July 24, 2016, 6:39pm

I have exactly the same problem. Haven’t tested on Windows, but I am sure that it shouldn’t take 4 minutes for Lenovo IdeaPad Y700 to open UE4 editor.

anonymous_user_87ccf054 · July 25, 2016, 9:13am

Any update on this?

anonymous_user_870870e91 · July 31, 2016, 6:30pm

Currently the engine is unusable in this state. I have a recent CPU and graphics card, so my system is definitely not the problem.

rogper · August 15, 2016, 6:50pm

I have the very same problem here, although I had never tried the windows version so I thought it was normal

Slonopotamus · September 8, 2016, 1:37pm

And the fix is: https://github.com/EpicGames/UnrealEngine/pull/2778

anonymous_user_1ac8f8b0 · February 24, 2017, 2:22pm

same problem…

anonymous_user_88209f78 · February 24, 2017, 4:02pm

I’m using Unreal Engine 4.15 on Linux, and it loads within 30 seconds when I open a project directly:

If I open Unreal Editor first and then open a project, it takes twice as long (under a minute):

This is on a desktop with an Intel Core i7-4790 with 32GB of RAM and an nVidia GTX 470 with 6GB of RAM.

anonymous_user_aa82d8fe1 · September 8, 2021, 5:55pm

This issue continues with Unreal Editor 5.
Ryzen 5950X, Radeon 6900XT, 32GB RAM, Samsung SSD

Editor initially started to get all shaders compiled, then start again with:

Linux: 1 Minute 5 Seconds
Windows: 8 Sekonds !

laurentO · January 28, 2022, 6:12pm

This issue is documented here

The problem will be solved by the next release of glibc (3.34+)

Actually, you can use a patched version of glibc called glibc-dso.

It’s available on the AUR.

I’ve JUST installed it
my starting time for UE 4.27 falls from 1 m 11s to less than 15s

MalikuMane · January 7, 2023, 5:09pm

The fix is actually in glibc 2.35.