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https://issues.apache.org/jira/browse/NETBEANS-2409?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16969225#comment-16969225
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Christian Lenz commented on NETBEANS-2409:
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> Some of the slowness in that file is about DTDs not being found. That’s an 
> area you could investigate further.

would like to. Thx for the info. Can you please be a bit more specific to me, 
what that means? I can't see that there is smth missing from the Info that I 
gave.
I only see this line above the content:
{code}INFO [org.netbeans.core.windows.persistence]: 
[PersistenceManager.getTopComponentForID] Problem when deserializing 
TopComponent for tcID:'JShellEditor'. Reason: null {code}

Your or any other help here to help me to investigate into the problem is 
needed and much appreciated.

> Very Slow  Operations on Windows
> --------------------------------
>
>                 Key: NETBEANS-2409
>                 URL: https://issues.apache.org/jira/browse/NETBEANS-2409
>             Project: NetBeans
>          Issue Type: Bug
>    Affects Versions: 10.0, 11.0
>         Environment: Windows
>            Reporter: Laszlo Kishalmi
>            Priority: Critical
>              Labels: Performance, Windows
>         Attachments: Details info.txt, NB11_autocomplete.nps, 
> NB11_getHint.nps, WinFilesystemSlow.png, messages.log
>
>          Time Spent: 1.5h
>  Remaining Estimate: 0h
>
> What is the best course of action for reporting slowness?  I can’t share my 
> project.
> I’m not certain how to give step-by-step instructions when the problem is 
> basically one step in most cases.  E.g. invoke auto-complete - nothing 
> happens for several seconds.  Invoke rename - dialog doesn’t appear for 
> several seconds.  Find usages - extremely slow > 5 second delay on a private 
> member of a class less than 100 lines.
> In general it seems NB 11 is noticeably slower than NB 8.2. Not good 
> considering slowness was already my #1 complaint about NB 8.2.  I have so far 
> found the benefits of NB outweigh the fact that it is much slower than other 
> IDEs for the same operations, but the slowness of NB 11 is tipping the scale. 
>  I don’t want to switch IDEs, pease don’t interpret this as some sort of 
> threat to do so. I would like to help find the issues in NB.  But I don’t 
> have the bandwidth to debug NB and not being about to share my project makes 
> it difficult to provide helpful reports :-(
> Are others seeing the slowness?
> Find usages, renames, call-hierarchy, auto-complete… things I use all the 
> time, I often have to wait 5 to 10 seconds for a response from the IDE, 
> sometimes more.
> I’ve already deleted user dir and cache and restarted. 
> I’m using Gradle-based Java projects, running NB 11.0 with JDK 8u202.



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