jfs2 & 5.2 any performance issues?

From: Anthony F. Fiore (anthony.fiore_at_NYU.EDU)
Date: 06/30/03

  • Next message: Tim Brumfield: "Tim out at 10:30 for early / extended lunch"
    Date:         Mon, 30 Jun 2003 11:17:38 -0400
    To: aix-l@Princeton.EDU
    
    

    Good Day,

        I was wondering if anyone on the list has noticed any performance
    issues with JFS2 and AIX 5.2 ML-1, most notably memory issues. The
    reason I say this is because when I looked at one of my systems this
    morning, it was using 99% of it's memory and starting to swap like crazy
    according to nmon64. TSM was backing up a test filesystem at the time,
    so I killed the tsm process, and unmounted the jfs2 filesystem and poof!
    my memory usage went down to 31.5 percent while the filesystem was being
    unmounted. Granted, this is a huge filesystem in the 200 GB range, but
    should it really eat up THAT much memory?

    TIA,

    Anthony

    --
    Anthony Fiore
    System Administrator
    ITS Operations and Production Services
    New York University
    anthony.fiore@nyu.edu
    

  • Next message: Tim Brumfield: "Tim out at 10:30 for early / extended lunch"

    Relevant Pages

    • AIX 5.2 maxperm & Oracle
      ... maxperm was set to 63%, ... large volumes of data IO going through the AIX filesystem cache). ... for memory with filesystem cache. ...
      (comp.unix.aix)
    • Re: compiling root filesystem into kernel (preferably tmpfs root filesystem)
      ... compiling root filesystem into kernel ... (read only roots backed by media other than memory). ... Next, DO NOT compress the image with mkuzip, instead do: ...
      (freebsd-hackers)
    • Re: [00/17] Large Blocksize Support V3
      ... to lock the filesystem block and prevent any updates to it, ... get 128 pages into a bio so all we've done churned some in memory ... I/O no faster than the current code. ... We can't use buffer heads - they can only point ...
      (Linux-Kernel)
    • Re: compiling root filesystem into kernel (preferably tmpfs root filesystem)
      ... the statically compiled-in root file system. ... you can compile a fs image into the kernel. ... binaries being on a read only filesystem backed by the install DVD?) ... (read only roots backed by media other than memory). ...
      (freebsd-hackers)
    • Re: RFC: CONFIG_PAGE_SHIFT (aka software PAGE_SIZE)
      ... but now we waste more memory on small files.... ... allowing us to increase the fundamental block size of the filesystem. ... _whole_ kernel faster. ... If I want a inode cache, it always needs to be 8k based. ...
      (Linux-Kernel)