Thanks! "I should hope not. ext4 vs zfs comparison isn't fair for either." I do realize that comparing ext4 and ZFS is not really giving anything but it tells us one thing, ext4 would work whereas ZFS would not for our use case, which was unexpected, at least to me. 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? Cheers, Albert
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 at sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada http://www.tancsa.com/