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Well hello thar. I've got a VPS running Ubuntu 9.10 and I've got an issue with the system using nearly all of the allocated RAM on basically idle. The services ...
  1. 11-17-2009 #1
    PabloTeK
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    A Question of RAM

    Well hello thar.

    I've got a VPS running Ubuntu 9.10 and I've got an issue with the system using nearly all of the allocated RAM on basically idle. The services I've initiated are: postfix, irssi, lighttpd, php & MySQL. I can't work out what's causing it. At the moment I have to perodically reboot the server whch is less than awesome when your email is running off it!

    Any ideas folks?
    Last edited by PabloTeK; 11-17-2009 at 10:36 AM. Reason: I'm an idiot.
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  2. 11-17-2009 #2
    MikeTbob
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    Hello and Welcome,
    Have you tried using the top command, to see what's eating your resources?
    I do not respond to private messages asking for Linux help, Please keep it on the forums only.
    All new users please read this.** Forum FAQS. ** Adopt an unanswered post.
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  3. 11-17-2009 #3
    coopstah13
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    Linux memory management is different from windows memory management. Are you sure it is actual memory being used and not memory used for buffers/cache? Look at output of free -m command, pay attention to second line.
    Code:
                 total       used       free     shared    buffers     cached
Mem:          3267       3207         60          0        216        851
-/+ buffers/cache:       2139       1128
Swap:          298         94        204
    It looks like i'm using all my memory, but in actuality I'm only using about 2gb.
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  4. 11-17-2009 #4
    PabloTeK
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    Code:
    paul@benetton:~$ free -m
             total       used       free     shared    buffers     cached
Mem:           246        192         54          0         20        122
-/+ buffers/cache:         49        197
Swap:          255          0        255
    I've got that, does that mean I'm not actually using that much? I'm new to Linux's memory managment!
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  5. 11-17-2009 #5
    coopstah13
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    According to your output you are only actually using 49mb out of 246mb available. The rest is being used by cache. Are you experiencing a problem or did you just assume there was one since you thought the memory usage was so high?
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  6. 11-17-2009 #6
    PabloTeK
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    No no, because I'm a Windows user traditionally I thought using almost all of it was a leak rather than caching. Thanks people!
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