CODEWITHSUNDEEP
intellij-ideaintellij-plugin
mjs
mjs

Reputation: 22369

Intellij 2019.3 sluggish on very large resolution. How to tune parameters for performance?

On MacOS, using Intellij 2019.3 I am experiencing annoying lag when scrolling.

I am using a MacOS smoothscroller global application, which basically adjust the scroll speed with software to get it smooth, but this lagging seems to occur also for normal mouse scrolling, when this is disabled. Not in all files, but seems to be in those where a rescroll has to load colors or whatnot in next view.

The scrolling works fine/great in any other application, but Intellij's implementation of this seems below standard. 

The settings I have now (turned up): 

    -Xms1024m
    -Xmx8092m
    -XX:ReservedCodeCacheSize=2048m
    -XX:+UseCompressedOops
    -Dfile.encoding=UTF-8
    -XX:+UseConcMarkSweepGC
    -XX:SoftRefLRUPolicyMSPerMB=512
    -ea
    -Dsun.io.useCanonCaches=false
    -Djava.net.preferIPv4Stack=true
    -Djdk.http.auth.tunneling.disabledSchemes=""
    -XX:+HeapDumpOnOutOfMemoryError
    -XX:-OmitStackTraceInFastThrow
    -Xverify:none

Can these be modified further? -ea isn't that a server option? Some of you will state that such huge params will cause issues, but I'd like to point out behaviour was the same 30 minutes ago with much lower values everything.

Also registry in Intellij lists a bunch of option which are impossible to comprehend and get right but they are able to adjust the scrolling and enable some "true.scroll" stuff which is impossible to adjust properly.

Of course, there are plugins to intellij for scrolling which are all now broken because Intellij breaks plugins by policy when it rolls out an update ( Editor has been below satisfaction since 2010 ).

Registry currently:

enter image description here

Smooth related options (could some be left behind form uninstalled smooth related plugins?):

enter image description here enter image description here

Note that now when I went to screenshot the registry, scrolling there is smooth as I want it to be, however when I scroll actual code, is where Intellij seems to go bonkers. It even does that for a large json file that I scroll.

Could it be due to highlighting/color plugins that is supposed to do stuff as I scroll up? I have minimal stuff installed.

The sluggishness is killing smooth scrolling and productivity. I can not scroll up without a lag and loose focus on where I am supposed to be on screen.

Is there some param there that I should be changing?

Other preferences(defaults):

enter image description here

Upvotes: 1

Views: 1091

Answers (1)

mjs
mjs

Reputation: 22369

The sluggish behavior was due to the use of show whitespaces.

I had all three of them checked.

I guess Intellij can't re render the dots on scrolling in a large file.

3 hours later after testing 100 things.

enter image description here

Also modifying/disabling antialiasing seems to help.

Found relevant link although in 2019 nothing of it seemed to contribute to any improvements:

https://gist.github.com/finalfantasia/cb8041996f540a158f18

Upvotes: 3

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