On 09/27/11 10:59 AM, Tomas Forsman wrote:
On 27 September, 2011 - Ian Collins sent me these 0,8K bytes:
On 09/27/11 07:55 AM, Jesus Cea wrote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
I just upgraded to Solaris 10 Update 10, and one of the improvements
is "zfs diff".
Using the "birthtime" of the sectors, I would expect very high
performance. The actual performance doesn't seems better that an
standard "rdiff", though. Quite disappointing...
Should I disable "atime" to improve "zfs diff" performance? (most data
doesn't change, but "atime" of most files would change).
I tend to disable atime in the root filesystem and only enable it on a
filesystem if required. So far, it has never been required on any of
the systems I look after!
I've found it useful time after time.. do things and then check atime
to see whatever files it looked at..
(yes, I know about truss and dtrace)
It can be useful, but unless you really want the functionality, it
generates a lot of unnecessary writes.
--
Ian.
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
