Andrey Kuzmin wrote: > On Fri, Jun 11, 2010 at 1:54 AM, Richard Elling > <richard.ell...@gmail.com <mailto:richard.ell...@gmail.com>> wrote: > > On Jun 10, 2010, at 1:24 PM, Arne Jansen wrote: > > > Andrey Kuzmin wrote: > >> Well, I'm more accustomed to "sequential vs. random", but YMMW. > >> As to 67000 512 byte writes (this sounds suspiciously close to > 32Mb fitting into cache), did you have write-back enabled? > > > > It's a sustained number, so it shouldn't matter. > > That is only 34 MB/sec. The disk can do better for sequential writes. > > Note: in ZFS, such writes will be coalesced into 128KB chunks. > > > So this is just 256 IOPS in the controller, not 64K.
No, it's 67k ops, it was a completely ZFS-free test setup. iostat also confirmed the numbers. --Arne > > Regards, > Andrey > > > -- richard > > -- > ZFS and NexentaStor training, Rotterdam, July 13-15, 2010 > http://nexenta-rotterdam.eventbrite.com/ > > > > > > > _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
