# Warning: You are using Gtk on Windows which is currently not recommended
**URL:** https://discourse.julialang.org/t/warning-you-are-using-gtk-on-windows-which-is-currently-not-recommended/34967
**Category:** General Usage
**Created:** [February 21, 2020, 11:32am UTC](https://discourse.julialang.org/t/warning-you-are-using-gtk-on-windows-which-is-currently-not-recommended/34967 "2020-02-21T11:32:57Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@programista](https://discourse.julialang.org/u/programista)
#### Post date: [February 21, 2020, 11:32am UTC](https://discourse.julialang.org/t/warning-you-are-using-gtk-on-windows-which-is-currently-not-recommended/34967/1 "2020-02-21T11:32:57Z")
What to do ? After adding Gtk is still the same Warning.
Win 7 , I preparde special USER JuliaPro\_v1.3.1-1 for this instalation JPRO. In Atom was added uber-juno
```julia
(@v1.3) pkg> st
Status `C:\Users\JuliaPro_v1.3.1-1\.juliapro\JuliaPro_v1.3.1-1\environments\v1.3\Project.toml`
c52e3926 Atom v0.11.3 ⚲
4c0ca9eb Gtk v1.1.2
7073ff75 IJulia v1.20.2
e5e0dc1b Juno v0.7.2 ⚲
4722fa14 PkgAuthentication v0.1.2
91a5bcdd Plots v0.28.4
c17dfb99 WinRPM v1.0.0
bd07be1c Winston v0.15.0
julia> using Winston
┌ Warning: You are using Gtk on Windows which is currently not recommended. Your REPL/IDE and anything depending on task switches will become sluggish and much slower (up to ~85x slower).
└ @ Gtk C:\Users\JuliaPro_v1.3.1-1\.juliapro\JuliaPro_v1.3.1-1\packages\Gtk\5KVNb\src\Gtk.jl:74
julia> versioninfo()
Julia Version 1.3.1
Commit 2d5741174c (2019-12-30 21:36 UTC)
Platform Info:
OS: Windows (x86_64-w64-mingw32)
CPU: Intel(R) Core(TM) i7-2630QM CPU @ 2.00GHz
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-6.0.1 (ORCJIT, sandybridge)
Environment:
JULIA_DEPOT_PATH = C:\Users\JuliaPro_v1.3.1-1\.juliapro\JuliaPro_v1.3.1-1;C:\JuliaPro-1.3.1-1\Julia-1.3.1\local\share\julia;C:\JuliaPro-1.3.1-1\Julia-1.3.1\share\julia
JULIA_EDITOR = "C:\JuliaPro-1.3.1-1\app-1.44.0\atom.exe" -a
JULIA_NUM_THREADS = 4
JULIA_PKG_SERVER = pkg.juliacomputing.com
JULIA_PKG_TOKEN_PATH = C:\Users\JuliaPro_v1.3.1-1\.juliapro\token.toml
julia>
```
Paul
---
### Author:  [@jameson](https://discourse.julialang.org/u/jameson)
#### Post date: [February 21, 2020, 8:48pm UTC](https://discourse.julialang.org/t/warning-you-are-using-gtk-on-windows-which-is-currently-not-recommended/34967/2 "2020-02-21T20:48:30Z")
Yeah, I wasn’t a huge fan of adding that warning. It’s meaningless, and nothing’s actually changed. But I’m not the Gtk.jl maintainer anymore.
---
### Author:  [@non-Jedi](https://discourse.julialang.org/u/non-Jedi)
#### Post date: [February 21, 2020, 8:54pm UTC](https://discourse.julialang.org/t/warning-you-are-using-gtk-on-windows-which-is-currently-not-recommended/34967/3 "2020-02-21T20:54:20Z")
See the github issue below for an explanation of the warning. If the mentioned issue doesn’t affect your use-case, you can safely ignore the warning.
[https://github.com/JuliaGraphics/Gtk.jl/issues/325](https://github.com/JuliaGraphics/Gtk.jl/issues/325)
---
### Author:  [@tim.holy](https://discourse.julialang.org/u/tim.holy)
#### Post date: [February 21, 2020, 9:57pm UTC](https://discourse.julialang.org/t/warning-you-are-using-gtk-on-windows-which-is-currently-not-recommended/34967/4 "2020-02-21T21:57:43Z")
Somebody who actually uses Gtk on Windows in real life should check whether [Warn on windows by SimonDanisch · Pull Request #467 · JuliaGraphics/Gtk.jl · GitHub](https://github.com/JuliaGraphics/Gtk.jl/pull/467#issuecomment-564593402) reduces the scale of the problem without causing issues (e.g., dropped events). If so we could at least paper over the problem.
---
### Author:  [@Iulian.Cioarca](https://discourse.julialang.org/u/Iulian.Cioarca)
#### Post date: [February 21, 2020, 11:49pm UTC](https://discourse.julialang.org/t/warning-you-are-using-gtk-on-windows-which-is-currently-not-recommended/34967/5 "2020-02-21T23:49:51Z")
I use a GUI written with Gtk and ImageView from time to time and I can confirm that the workaround proposed by @tim.holy improves the experience. I wouldn’t say it fixes it 100% because occasionally I see stutters, but it’s better. Just modify according to the comment, build Gtk and give it a try.
---
### Author:  [@programista](https://discourse.julialang.org/u/programista)
#### Post date: [February 23, 2020, 2:56pm UTC](https://discourse.julialang.org/t/warning-you-are-using-gtk-on-windows-which-is-currently-not-recommended/34967/6 "2020-02-23T14:56:21Z")
After changing singnals.jl tmout\_min::Cint = (uv\_pollfd::\_GPollFD).fd == -1 ? 10 : 5000
winston is lazy …
```julia
> for i=1:100
@time display(scatter(rand(100),rand(100)))
end
FramedPlot(...)
0.958385 seconds (1.23 M allocations: 61.319 MiB, 1.73% gc time)
FramedPlot(...)
0.105294 seconds (17.07 k allocations: 1.478 MiB)
FramedPlot(...)
0.107720 seconds (17.08 k allocations: 1.480 MiB)
FramedPlot(...)
0.124370 seconds (17.08 k allocations: 1.480 MiB)
FramedPlot(...)
0.125256 seconds (17.08 k allocations: 1.481 MiB)
...
Plots also
Plot{Plots.GRBackend() n=1}
0.212880 seconds (1.23 M allocations: 25.355 MiB, 11.91% gc time)
Plot{Plots.GRBackend() n=1}
0.219549 seconds (1.23 M allocations: 25.389 MiB, 5.04% gc time)
Plot{Plots.GRBackend() n=1}
0.199911 seconds (1.23 M allocations: 25.353 MiB)
Plot{Plots.GRBackend() n=1}
```
But on this same machine in clear REPL of Julia 0.7 all workig fast (but I must manualy run gksqt.exe). Looks problem is in Julia PRO.
```julia
ulia> for i=1:100
@time display(Plots.scatter(rand(100),ran
sleep(.1)
end
0.057756 seconds (560.14 k allocations: 10.974
0.059458 seconds (545.50 k allocations: 10.751
0.067727 seconds (536.53 k allocations: 10.580
0.068309 seconds (536.52 k allocations: 10.580
```
Paul
---
### Author:  [@JosephPollacco](https://discourse.julialang.org/u/JosephPollacco)
#### Post date: [February 27, 2020, 9:32pm UTC](https://discourse.julialang.org/t/warning-you-are-using-gtk-on-windows-which-is-currently-not-recommended/34967/7 "2020-02-27T21:32:29Z")
Hi Paul,
It is great that you found a way round GTK problem which I documented:
https://discourse.julialang.org/t/serious-issue-julia-language-keyboard-lag-typing-very-slow/32081
I use Winston since it seems to date to be the fastest plotting package, as I require making a number of plots. Unfortunately I did not find a better alternative solution.
You are speaking to a non computer scientist, so what simple steps must I perform to avoid the Gtk problem?
Many thanks for any help you may provide,
Joseph
---
### Author:  [@programista](https://discourse.julialang.org/u/programista)
#### Post date: [February 27, 2020, 9:45pm UTC](https://discourse.julialang.org/t/warning-you-are-using-gtk-on-windows-which-is-currently-not-recommended/34967/8 "2020-02-27T21:45:23Z")
For my is not the some problem, VS and ATOM are not siimlar.
Just use only REPL Julia 🙂 Studio ,Atom, all are slow on win ! 🙂
I checked Linux, is the same , Win7 and Julia on Vbox or just on HD is fastest!
Win10 is not system … it is some like jam 🙂
Paul