Bug 350956 - Simple remote Konsole window using huge amount of bandwidth
Summary: Simple remote Konsole window using huge amount of bandwidth
Status: RESOLVED UPSTREAM
Alias: None
Product: konsole
Classification: Applications
Component: general (show other bugs)
Version: 2.14.2
Platform: Fedora RPMs Linux
: NOR normal
Target Milestone: ---
Assignee: Konsole Developer
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-08-04 09:43 UTC by dag
Modified: 2018-08-19 12:14 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:

Attachments
Add an attachment

Note You need to log in before you can comment on or make changes to this bug.
Description dag 2015-08-04 09:43:03 UTC 
Checked out why my remote konsole (over wifi) on one of the servers is so sluggish and found the konsole is constantly using about 0.7 MB/s bandwidth for the screen updates.
The setup is:
Server: Fedora 21 (dag)
X- Client: Mageia 5 over WiFi (eseries)

Startup command: ssh dag dbus-launch --exit-with-session konsole --display eseries:0.0

The command I am running in the console is nethogs

I have set the option QT_GRAPHICSSYSTEM=native on remote connections a long time ago as QT_GRAPHICSSYSTEM=raster makes everything very sluggish on remote connections.

Reproducible: Always

Steps to Reproduce:
1. Start up remote console
2. Start nethogs in the window
3. Check out the bandwidth use

Actual Results:  
Bandwidth usage is 700+ kB/s

Expected Results:  
A lot lower BW usage
Comment 1 dag 2015-12-19 09:57:34 UTC 
Just "upgraded" to FC23 and got konsole v. 15.08.3 on KDE 5.17.0 (Qt 5.5.1) and now this problem is even worse - A lot worse..
The same procedure as described above will consume ALL the bandwith of my WiFi for one simple konsole window.
Come on guys, you are putting far too much effort into Wayland neglecting the current X-window remote user...
Comment 2 Alexander Mentyu 2018-07-27 05:41:27 UTC 
Is this issue still relevant?
Comment 3 dag 2018-07-28 08:50:01 UTC 
Sure is. But it seems to be by design and concerns ALL remote KDE windows. Stopped using konsole in favour of lxterminal. That still works the way X-window was designed to work. A shame that the KDE people decided to go this route...
Comment 4 Christoph Feck 2018-08-18 10:21:45 UTC 
Qt no longer uses X11 calls to render text, it sends rendered bitmaps.
Comment 5 dag 2018-08-18 13:55:08 UTC 
Exactly. The most stupid design decision ever...
Comment 6 Christoph Feck 2018-08-19 02:06:37 UTC 
Never complain until you tried to do better.
Comment 7 dag 2018-08-19 12:14:09 UTC 
Have been involved in a lot of open source projects since 1985 or so and also in the start of Qt so I think I am entitled to critisize this regression, and quite heavily so....