Hi Rick On 06/29/2015 02:20 PM, Rick Macklem wrote: > If the Solaris server is using ZFS, setting sync=disabled might help w.r.t. > write performance. It is, however, somewhat dangerous w.r.t. loss of recently > written data when the server crashes. (Server has told client data is safely > on stable storage so client will not re-write the block(s) although data > wasn't > on stable storage and is lost.) > (I'm not a ZFS guy, so I can't suggest more w.r.t. ZFS.) >
The system on the other side uses SAM/QFS, i.e. there is no such option for the file system per se (only the file system metadata is in a zvol thus not a full featured zfs). In parallel we are working also with Oracle to see where there may be a matching knob to turn as we see about the same performance issues from a Linux host (NFS client, Debian Jessie) with a Mellanox Technologies MT27500 Family [ConnectX-3] controller. Cheers Carsten -- Dr. Carsten Aulbert, Atlas cluster administration Max Planck Institute for Gravitational Physics (Albert Einstein Institute) Callinstraße 38, 30167 Hannover, Germany Tel: +49 511 762 17185, Fax: +49 511 762 17193 _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
