# [OmniOS-discuss] zfs and small files

Tobias Oetiker tobi at oetiker.ch
Wed Nov 13 14:46:02 UTC 2013

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    Hi Peter,

    Today Peter Tribble wrote:

    > On Wed, Nov 13, 2013 at 1:59 PM, Tobias Oetiker <tobi at oetiker.ch> wrote:
    >
    > > We have this customer who loves to put tons of files into single
    > > directories.  The other day he found that removing a directory with
    > > 7k files from raidz2 pool (with ssd log device) took about 10
    > > minutes ...
    > >
    > > is this to be expected, or should this be faster on a properly
    > > configured system ?
    > >
    >
    > That's a tiny number of files. Ought to be essentially instant.
    > I routinely have up to a million files in a directory. That can take
    > a few minutes to delete, but I don't have any SSDs at all on
    > those systems.
    >
    > This isn't being done over NFS, is it? That can dramatically slow
    > operations like this, even with a log.

    nope it is local ...

    are you running this on raidz2 ?

    cheers
    tobi

    --
    Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
    http://it.oetiker.ch tobi at oetiker.ch ++41 62 775 9902 / sb: -9900

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