Date: Tue, 24 Nov 2015 10:42:23 -0500 From: Mike Tancsa <mike@sentex.net> To: Albert Cervin <albert@acervin.com>, Adam Vande More <amvandemore@gmail.com> Cc: "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org> Subject: Re: ZFS - poor performance with "large" directories Message-ID: <5654855F.2070502@sentex.net> In-Reply-To: <CAMMK2LBCpgb8SPZrC0to9kHHWzFvgvSzaiKjpH-PQm22q%2B=n3g@mail.gmail.com> References: <CAMMK2LCB5ocjyufZCMXQScQDgVxvSHOr0vmef6LKzPO35w3TQg@mail.gmail.com> <CA%2BtpaK3czSuxGH0J%2BVyPRfC8CiGJBk_CPf=bwQzxLjM94RCY9A@mail.gmail.com> <CAMMK2LBCpgb8SPZrC0to9kHHWzFvgvSzaiKjpH-PQm22q%2B=n3g@mail.gmail.com>
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On 11/24/2015 10:26 AM, Albert Cervin wrote: > vfs.zfs.txg.timeout is already verified to be 5 (the default). I have > also turned off atime and vfs.zfs.arc_meta_limit is 1287906304. > > "Do you have any memory pressures on your server ? Have a look at this > thread" > > The server has 4 cores and 8Gb of memory and there is no memory > pressure on the server. Thanks, will look at the thread! > > The setup is _really_ simple with just a single pool and no datasets. > > Any more ideas? 8G is not that much really. In the thread they suggested increasing the meta limit so that the giant directory can fit into cache. ---Mike -- ------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada http://www.tancsa.com/
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