Slow idea, lags while scrolling in file.
Answered
How can I increase memory for idea usage,
I am on iMac 27-inch with 3.4 GHz Intel Core i7 and 20 GB 1333 MHz DDR3 memory
but lagging when scrolling for example in List.java file.
how can I fix this
but everything is ok in Lenovo laptop Fedora 23 linux with i5 and 16 GB memory
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Please see https://intellij-support.jetbrains.com/hc/articles/206544869.
Scrolling can be slow if you have 4K display on Mac: https://youtrack.jetbrains.com/issue/IDEA-144261.
Thank you!
Did this fix your problem? As in, did you have to edit the options file and specify the jvm to use more memory? I keep noticing laggy scrolling on smallish projects and also on a core i7 (but its a macbook pro) - which is strange.
Also Is there an obvious way to check if there is a memory issue that warrants such a change?
CPU snapshot can show what's the problem: https://intellij-support.jetbrains.com/hc/articles/207241235.
Is there a way to capture a CPU snapshot without using the YourKit profiler? It doesn't even start for me because of some fatal error.
You don't need to use the profiler itself, just the agent that is included with IntelliJ IDEA Ultimate. What is the error you get when starting with the profiler agent? What options did you specify? How do you start IntelliJ IDEA?
PhpStorm 2018 EAP - just few minutes ago downloaded jdk 8 121 and switched boot SDK (Shift Cmd A) to it. Drastically improved performance, but now no more smooth scroll (stepped scroll by line) and nice fonts with subpixel.
LG 27 4k and MBP 15 mid 2015 with Intel HD
In my experience it was the window manager that was causing issues.
I am using Fedora 30 (with Gnome 3.32 desktop environment) using the X window manager and had the issue of jumpy scrolling.
When I switched to the Wayland window manager, scrolling on PHP Storm became buttery smooth.