Date: Tue, 09 Aug 2011 10:52:00 +0200 From: Damien Fleuriot <ml@my.gd> To: freebsd-stable@freebsd.org Subject: Re: ZFS directory with a large number of files Message-ID: <4E40F530.8020507@my.gd> In-Reply-To: <CAJGy1F0d7jeyaFuNdXe%2BucTL2r7R4suCyu8xG7WRHenMFZH-6g@mail.gmail.com> References: <CAJGy1F0d7jeyaFuNdXe%2BucTL2r7R4suCyu8xG7WRHenMFZH-6g@mail.gmail.com>
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On 8/2/11 9:39 AM, seanrees@gmail.com wrote: > Hi there, > > I Googled around and checked the PRs and wasn't successful in finding > any reports of what I'm seeing. I'm hoping someone here can help me > debug what's going on. > > On my FreeBSD 8.2-S machine (built circa 12th June), I created a > directory and populated it over the course of 3 weeks with about 2 > million individual files. As you might imagine, a 'ls' of this > directory took quite some time. > > The files were conveniently named with a timestamp in the filename > (still images from a security camera, once per second) so I've since > moved them all to timestamped directories (yyyy/MM/dd/hh/mm). What I > found though was the original directory the images were in is still > very slow to ls -- and it only has 1 file in it, another directory. > While not addressing your original question, which many people have already, I'll toss in the following: I do hope you've disabled access times on your ZFS dataset ? zfs set atime=off YOUR_DATASET/supercamera/captures
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