Re: improving concurrency/performance

From: Tarjei Huse (no email)
Date: Mon Nov 07 2005 - 03:37:25 EST

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    Hi, I would just request that the tests and comments in this thread
    should be added to the Cyrus wiki.

    Kind regards,
    Tarjei
    On Mon, 2005-11-07 at 02:46 -0200, Sergio Devojno Bruder wrote:
    > David Lang wrote:
    > >(..)
    > > I was recently doing some testing of lots of small files on the various
    > > filesystems, and I ran into a huge difference (8x) depending on what
    > > allocator was used for ext*. the default allocator changed between ext2
    > > and ext3 (you can override it as a mount option) and when reading 1M
    > > files (10 dirs of 10 dirs of 10 dirs of 1000 1K files) the time to read
    > > them went from ~5 min with the old allocator useed in ext2 to 40 min for
    > > the one that's the default for ext3.
    > >
    > > David Lang
    > >
    > (!!) Interesting. You said mount options? man mount man page only show
    > me data=journal, data=ordered, data=writeback, etcetera.
    >
    > How can I change that?
    >
    > --
    > Sergio Bruder
    > ----
    > Cyrus Home Page: http://asg.web.cmu.edu/cyrus
    > Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu
    > List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html

    -- 
    Tarjei Huse <>
    ----
    Cyrus Home Page: http://asg.web.cmu.edu/cyrus
    Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu
    List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
    

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