Date: Tue, 2 Aug 2011 04:07:38 -0700 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: "seanrees@gmail.com" <seanrees@gmail.com> Cc: freebsd-stable@freebsd.org, Daniel Kalchev <daniel@digsys.bg> Subject: Re: ZFS directory with a large number of files Message-ID: <20110802110738.GA95225@icarus.home.lan> In-Reply-To: <CAJGy1F11p9rdvR5ESDf6AVqiCJmuu99YutqngmnYZW%2B3eHLWYg@mail.gmail.com> References: <CAJGy1F0d7jeyaFuNdXe%2BucTL2r7R4suCyu8xG7WRHenMFZH-6g@mail.gmail.com> <20110802090830.GA92646@icarus.home.lan> <CAJGy1F0V65YB7L_1T-26O_gUkUUzn6mef036iuAw6HRGjxFRQA@mail.gmail.com> <20110802094226.GA93114@icarus.home.lan> <42039B84-D6CE-4780-AA70-8500B1B32036@gsoft.com.au> <4E37CD13.1070402@digsys.bg> <CAJGy1F11p9rdvR5ESDf6AVqiCJmuu99YutqngmnYZW%2B3eHLWYg@mail.gmail.com>
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On Tue, Aug 02, 2011 at 11:55:43AM +0100, seanrees@gmail.com wrote: > On Tue, Aug 2, 2011 at 11:10 AM, Daniel Kalchev <daniel@digsys.bg> wrote: > >> If it is a limitation in ZFS it would be nice to know that, perhaps it > >> truly, really is a bug that can be avoided (or it's inherent in the way ZFS > >> handles such things) > > > > It is possible ?that there is not enough memory in ARC to cache that large > > directory. > > > > Other than that, perhaps in ZFS it would be easier to prune the unused > > directory entries, than it is in UFS. It looks like this is not implemented. > > > > Another reason might be some FreeBSD specific implementation issue for > > fstatfs. > > > > In any case, the data available is not sufficient. More information would > > help, like how much RAM this system has, how much ARC uses, some ARC stats. > > Which sysctl's would you like? Output from "sysctl vfs.zfs kstat.zfs" would be sufficient. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, US | | Making life hard for others since 1977. PGP 4BD6C0CB |
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