tracker issue : CFB-4198232

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Code Assist suggestion list freezes UI

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Status/Resolution/Reason: Closed/Withdrawn/CannotReproduce

Reporter/Name(from Bugbase): Hakan Erci / Hakan Erci ()

Created: 08/11/2017

Components: Editor Features, Code assist

Versions: 2016

Failure Type: Performance Issue

Found In Build/Fixed In Build: Version: 3.1.4 Build: 302777 /

Priority/Frequency: Normal / All users will encounter

Locale/System: German / Windows 8.1/64bit

Vote Count: 0

In certain situations(described below) it consistently happens that the suggestion list that appears with Ctrl+Space or by waiting a second or so will freeze the UI for up to 20 seconds. It happens every time the list would appear. It appears as if the whole index gets rebuilt during this time because with the heap status feature and the taskmanager it appears as if the heap peaks and then falls down again. If you also enable the GC log it will show multiple GC allocation failures in rapid succession during this freeze period. It is very hard to find more about this problem but it looks like something spins up and locks itself or something like that. If you trigger this freeze multiple times you will also notice a +/- steady increase in memory usage without opening new projects or files. Then also the GC-button from the heap status bar will not help. 

I tried many things to fix it myself including several installations, several projects, many tips from the eclipse community, eclipse with CFBuilder plugins and it is also reproducible on an old Coldfusion Builder 2 installation, so it is either our setup or this is a long standing problem.