Lag when changing to File/Tools tab on macOS

[45gfg9]

OS: macOS 10.13.6
IDE: 1.8.6
When changing between tabs, File tab causes lag.

When changing from other tabs to File tab, it will lag about a second.
Changing to Tools tab also causes lag, but it's much shorter, about 0.1 sec.
Other tabs Edit/Sketch/Help tabs work fine.

[MCUdude]

I'm experiencing the exact same issues. I'm using MacOS 10.12.6

[PaulStoffregen]

Random question - Are you using Teensy, or have you run the Teensyduino installer on this copy of Arduino 1.8.6? There may be a bug in Teensyduino which adds lag to some of the menus. I'm investigating...

Just want to confirm these are the Arduino IDE without Teensy's modifications. Wouldn't want to bother the Arduino devs with something that might be my fault.

[MCUdude]

my menu is really laggy and slow without teensyduino installed. I ended up going back to 1.8.5 because it might take half a minute for the boards menu to respond. Instant spinning ball..

[45gfg9]

Hiya, here to say I am not using Teensy.

[DrDiodac]

I have the same problem huge lags, slow down even restarting itself my Mac and after restart, kernel panic alert.
But if I not touch menu, I can working normally.

[facchinm]

Bisecting right now, I'll notify you when I get something 😉

[facchinm]

Found the culprit, it's Java (again) 😡
1.8.5 was bundled with JRE8u151 while 1.8.6 with u171 . Bisecting shows that the first problematic version is u161 but there's nothing in the release notes that catches the eye.

The slowdown exists even if I revert a2b5f66 and companion commits or compile IDE 1.8.4, so the bug lies somewhere else.

As a workaround while we investigate, I'd revert jre to u151 on nighlty builds (even if it's EOL) since it doesn't look like there are super important bugfixes between 151 and 181.

[facchinm]

Profiling shows something interesting

JRE 8u161

  1690000000   41.02%      169  sun.lwawt.macosx.LWCToolkit.doAWTRunLoopImpl
   260000000    6.31%       26  sun.lwawt.macosx.CMenuItem.nativeSetLabel
   220000000    5.34%       22  sun.lwawt.macosx.CPlatformWindow.nativeGetTopmostPlatformWindowUnderMouse
   180000000    4.37%       18  sun.lwawt.macosx.CMenuItem.nativeCreate
    80000000    1.94%        8  java.lang.Object.wait
    80000000    1.94%        8  sun.lwawt.macosx.CFRetainedResource.nativeCFRelease

JRE 8u151

   390000000   30.47%       39  sun.lwawt.macosx.CPlatformWindow.nativeGetTopmostPlatformWindowUnderMouse
    40000000    3.13%        4  sun.misc.Unsafe.unpark
    20000000    1.56%        2  sun.java2d.opengl.OGLRenderQueue.flushBuffer
    20000000    1.56%        2  sun.java2d.opengl.CGLLayer.blitTexture
    10000000    0.78%        1  java.awt.KeyboardFocusManager.setGlobalCurrentFocusCycleRootPriv

If anyone's deeply into Java it would be nice to get some help to find the root cause and create a proper bug report

[facchinm]

@DrDiodac @45gfg9 @MCUdude would you mind testing the build that is being produced by #7935 ? Thanks!

[MCUdude]

I just downloaded and tested it. Works fine for me now! 👍🏻

[DrDiodac]

Yeah I can lead test, just I need reading about changes which I need to do or send me please steps tips how to, and I can start quickly. Send from iPhone

…

Wiadomość napisana przez Martino Facchin ***@***.***> w dniu 27.08.2018, o godz. 15:31: @DrDiodac @45gfg9 @MCUdude would you mind testing the build that is being produced by #7935 ? Thanks! — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or mute the thread.

[per1234]

@DrDiodac

1. Download http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-7935-BUILD-760-macosx.zip
2. Use the downloaded test version of the Arduino IDE just as you would the production IDE release (more info)

Thanks!