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Thread: Is this a memory issue?

  1. #1
    Join Date
    May 2007
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    Is this a memory issue?

    The memory usage starts at 22% but slowly builds, and reaches 70% after 10 hours of uptime. If left alone, the swap file will start being used, and eventually programs slow to being unusable. Logging out/in recovers the memory! Shouldn't the memory be releasing after use? Is this a concern?

  2. #2
    Join Date
    Apr 2008
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    Re: Is this a memory issue?

    Which process has the memory leak? You can use top to find out if you're not sure.
    Cheesemill

  3. #3
    Join Date
    May 2007
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    39

    Re: Is this a memory issue?

    I've looked at the list, and don't see that anything is "leaking"; though I might be looking at the wrong things.

  4. #4
    Join Date
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    Re: Is this a memory issue?

    First, what version of Ubuntu? Second, how much memory. 70% of 1GB is not the same as 70% of 2GB.

    I have found that Ubuntu versions prior to 13.04 always used about 70% of 1GB of RAM on my machine. The system does not release memory quickly. It likes to keep memory reserved once it has been used in case that memory space is need again.

    On 13.04 memory usage is down by 15 - 20% until I start loading applications then it builds up a bit.

    Regards.
    It is a machine. It is more stupid than we are. It will not stop us from doing stupid things.
    Ubuntu user #33,200. Linux user #530,530


  5. #5
    Join Date
    May 2007
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    39

    Re: Is this a memory issue?

    I've got 2GB, but the issue is not how much, but that it's not releasing and continues to build until things slow to the point of becoming unusable. Using Ubuntu 13.04 classic.

  6. #6
    Join Date
    Jan 2007
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    3,202

    Re: Is this a memory issue?

    As Cheesemill says, if you run top, after the system has been up for some hours, it should be apparent which process is hogging the memory. You won't actually observe it leaking, probably, but one process will be using way more memory than the others.
    Intel Core i7-950 / Asus P6X58D-E / Nvidia GTX480 / siduction 64-bit on OCZ Revodrive SSD / KDE4.10.2/ Kubuntu 13.04

  7. #7
    Join Date
    May 2007
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    39

    Re: Is this a memory issue?

    Yes, TOP does show the relative memory usage, but I'm thinking that it shouldn't continue to build. Shouldn't memory be released without my having to log out and then in, or rebooting?

  8. #8
    Join Date
    Jan 2007
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    3,202

    Re: Is this a memory issue?

    You are completely correct -- it is undoubtedly a bug in some bit of software, possibly the OS, possibly something else that is running. But it can't get fixed until it gets reported, and it can't get reported until someone can define the problem with reasonable precision.
    Intel Core i7-950 / Asus P6X58D-E / Nvidia GTX480 / siduction 64-bit on OCZ Revodrive SSD / KDE4.10.2/ Kubuntu 13.04

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