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https://issues.apache.org/jira/browse/NETBEANS-1610?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16675003#comment-16675003
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Basti Kamp commented on NETBEANS-1610:
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There is a known Bug in NetBeans 8.2 with the Tasks view.
[https://stackoverflow.com/questions/48968407/netbeans-8-2-high-cpu-usage-without-any-reason]
Look at the post of Lovro. If I turn on and off the Tasks-View once, the
CPU-Usage in Background disappears. We can reproduce this behaviour at some
collegues. Maybe it could help to find the issue.
> Constant background CPU usage
> -----------------------------
>
> Key: NETBEANS-1610
> URL: https://issues.apache.org/jira/browse/NETBEANS-1610
> Project: NetBeans
> Issue Type: Bug
> Affects Versions: 9.0
> Reporter: Kevin T
> Priority: Major
> Fix For: 9.0, Next
>
> Attachments: constant background cpu usage netbeans 9.0.txt
>
>
> Product Version = Apache NetBeans IDE 9.0 (Build
> incubator-netbeans-release-334-on-20180708)
> Operating System = Windows 10 version 10.0 running on amd64
> Java; VM; Vendor = 1.8.0_162
> Runtime = Java HotSpot(TM) 64-Bit Server VM 25.162-b12
> STEPS:
> * Open project
> * Minimize netbeans window or not have it in the foreground
> ACTUAL:
> Background CPU usage is constantly at 16-18%, so that my laptop fan turns
> on. Does not cease unless I close netbeans or put it back in the foreground.
> EXPECTED:
> No background CPU usage when minimized or not the active window
> I unchecked "Enable auto-scanning of sources" in
> Options->Miscellaneous->Files, but the IDE appears to still be scanning and
> constantly using CPU.
> This issue was also present in version 8.2.
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