Hi, > I don't know about the rest of your test, but writing > zeroes to a ZFS > filesystem is probably not a very good test, because > ZFS recognizes > these blocks of zeroes and doesn't actually write > anything. Unless > maybe encryption is on, but maybe not even then.
Not true. If I want ZFS to write zeros, ZFS does write zeros. You can simply check this by doing a dd. ZFS does not filter "zero" writes. > > During the experiment I could nicely see: > > - that performance on ramdisk is CPU bound doing > ~125 MB /sec per Core. > Ouch! That's all? Per Core ! So for 8 Core System this is ~1 GB / sec - More then mosts disks can handle. If you use 50% (must save some for scrub) you are ok. Robert -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
