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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
On Mon, Sep 26, 2011 at 1:55 PM, Jesus Cea j...@jcea.es wrote:
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,
On Mon, September 26, 2011 14:55, Jesus Cea wrote:
[...]
real10m0.272s
user0m0.809s
sys 2m6.693s
10 minutes to diff 7.55 GB is... disappointing.
This machine uses a 2-mirror configurations, and there is no more
activity going on in the machine. ZPOOL version 29, ZFS version
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On 26/09/11 22:29, David Magda wrote:
Talking about 7.55 GB is mostly useless as well. If it's a dozen
video files then stat()ing them all with be done very quickly by
just running find(1). If however the 7.55 GB is made up of
7,550,000 files then
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On 26/09/11 21:31, Nico Williams wrote:
atime has nothing to do with it.
How much work zfs diff has to do depends on how much has changed
between snapshots.
That is what I thought, but look at my example: less than 20 changes
and more than 10
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On 26/09/11 22:54, Jesus Cea wrote:
On 26/09/11 22:29, David Magda wrote:
Talking about 7.55 GB is mostly useless as well. If it's a
dozen video files then stat()ing them all with be done very
quickly by just running find(1). If however the 7.55
On Mon, 26 Sep 2011, Jesus Cea wrote:
rsync takes a bit less than 7 minutes. So zfs diff is actually
slower!.
It is important to define what is meant by rsync. For example, a
common rsync operating mode is to simply compare whole-file timestamps
and file size in order to determine that a
On 09/26/11 12:31, Nico Williams wrote:
On Mon, Sep 26, 2011 at 1:55 PM, Jesus Cea j...@jcea.es wrote:
Should I disable atime to improve zfs diff performance? (most data
doesn't change, but atime of most files would change).
atime has nothing to do with it.
based on my experiences with
Ah yes, of course. I'd misread your original post. Yes, disabling
atime updates will reduce the number of superfluous transactions.
It's *all* transactions that count, not just the ones the app
explicitly caused, and atime implies lots of transactions.
Nico
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On 09/27/11 07:55 AM, Jesus Cea wrote:
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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
On 27 September, 2011 - Ian Collins sent me these 0,8K bytes:
On 09/27/11 07:55 AM, Jesus Cea wrote:
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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
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:
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I just upgraded to Solaris 10 Update 10, and one of the improvements
is zfs diff.
Using the
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