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From the last 3-4 days, my laptop has started becoming much laggy when I'm working on Android Studio or if it is just running in the background.

So, today again I was working in Android Studio. My laptop became much laggier and suddenly this happened.

Whenever I tried to write something in the editor window, the random text "Jrstlc" started appearing. Whenever I hit a button on my keyboard only this text was being repeatedly written in the editor.

This screenshot shows the "Jrstlc" being repeatedly written:

enter image description here

I thought of quitting Android Studio, but it again lagged there and didn't quit. But everything else started working at a normal speed.

I opened up the System Monitor and it showed Android Studio using '1.2gb' memory.

This screenshot shows the high memory usage by android-studio:

enter image description here

And then down the list I saw some services starting with the name 'tracker'.

This screenshot shows the 'tracker' services:

enter image description here

I'm more concerned about it now.

Why that keyboard issue happened and why android-studio is eating so much memory?

Is there any possibility of a virus?

Shivam Arora
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  • Image uploading is currently unavailable due to ISP problems of SE: https://twitter.com/StackStatus/status/599934236188090368, but it should come back soon... Then you can use the [edit] button under your question. – s3lph May 17 '15 at 13:59
  • Thanks. I will add the screenshots when image uploading becomes available soon. – Shivam Arora May 17 '15 at 14:01
  • I've added the links to screenshots. I have 3 of them but can post only 2 because of the restrictions of the site.

    And I can't even add the screenshots because I don't have the required 10 reputation.

     – Shivam Arora May 17 '15 at 14:19

2 Answers2

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  1. Tracker is a search engine, search tool and metadata storage system.

    It allows you to find the proverbial needle in your computer's haystack as well as providing a one stop solution to the organisation, storage and categorisation of your data.
    Source and more Infos, thx @solsTiCe for the hint

  2. tracker can consume a lot of resources

    Install iotop, a simple top-like I/O monitor

    sudo apt-get install iotop

    Start iotop in a terminal and monitor the output of tracker processes

  3. The memory usage of development environments of this type is normal.

    Install htop, a interactive process viewer

    sudo apt-get install htop

    and start with htop in a terminal. Press F5 for the tree view and search for java. Look at the information on the sub-processes. There you'll see more detail, who needs as much RAM.

  4. Jrstlc, sorry, no idea.

    But a virus you can exclude my opinion.

Community
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A.B.
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  • Look at http://askubuntu.com/q/346211/350004 or http://ubuntuforums.org/showthread.php?t=2217610 for more info about tracker app – solsTiCe May 17 '15 at 14:31
  • Thanks A.B. Can you please add the third screenshot too? I've updated the description with the link to screenshot. – Shivam Arora May 17 '15 at 14:32
  • Thanks @A.B. You have mentioned in your answer that tracker can consume a lot of resources.

    But you can see in the screenshot, it is not consuming much memory.

    And what is iotop used for?

     – Shivam Arora May 17 '15 at 14:36
  • For disk input output – A.B. May 17 '15 at 14:37
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The tracker app sounds like a good idea, but it's not ready for prime time. I also use Android Studio and notice laggy performance. the "top" command shows the various tracker processes running at the top of the list. I see my load average reaching 6 or 7 and my memory use nearing 100%. This is with the default settings for tracker after exiting Android Studio. It is supposed to do its work without interfering with normal use, but that is not the case. I see other software failing (i.e., network apps timing out) due to the excessive load. You can adjust tracker settings (in 15.04) by running "tracker-preferences". I have removed everything from the "locations" list, now my system is usable again.

John Anderson
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