Richard Elling wrote:
On Oct 15, 2009, at 1:19 PM, Javier Conde wrote:
Hello,
I've seen in the "what's new" of Solaris 10 update 8 just released
that ZFS now includes the "primarycache" and "secondarycache"
properties.
Is this the "equivalent" of the UFS directio?
No. UFS directio does 3
On Oct 15, 2009, at 3:13 PM, Bob Friesenhahn wrote:
On Thu, 15 Oct 2009, Richard Elling wrote:
No. UFS directio does 3 things:
1. unbuffered I/O
2. allow concurrent writers (no single-writer lock)
3. provide an improved async I/O code path
For #1, the ZFS equivalent is
On Thu, 15 Oct 2009, Frank Middleton wrote:
IIRC the trigger for this thread was the suggestion that
primarycache=none be set on datasets used for swap.
Presumably swap only gets used when memory is low or
exhausted, so it would it be correct to say that it wouldn't
make any sense for swap to
IIRC the trigger for this thread was the suggestion that
primarycache=none be set on datasets used for swap.
Presumably swap only gets used when memory is low or
exhausted, so it would it be correct to say that it wouldn't
make any sense for swap to be in /any/ cache? If this isn't
what primar
On Thu, 15 Oct 2009, Richard Elling wrote:
No. UFS directio does 3 things:
1. unbuffered I/O
2. allow concurrent writers (no single-writer lock)
3. provide an improved async I/O code path
For #1, the ZFS equivalent is primarycache=none, but you might find that
primarycac
On Oct 15, 2009, at 1:19 PM, Javier Conde wrote:
Hello,
I've seen in the "what's new" of Solaris 10 update 8 just released
that ZFS now includes the "primarycache" and "secondarycache"
properties.
Is this the "equivalent" of the UFS directio?
No. UFS directio does 3 things:
1. u
Other than how to turn these features on and off, only so much
performance related info can be shoe horned into a man page.
You might check out these blogs:
http://blogs.sun.com/roch/entry/people_ask_where_are_we
See the direct I/O section
http://blogs.sun.com/bobn/entry/what_s_new_in_solaris
Suggest you start with the man page
http://docs.sun.com/app/docs/doc/819-2240/zfs-1m
On 10/15/2009 4:19 PM, Javier Conde wrote:
Hello,
I've seen in the "what's new" of Solaris 10 update 8 just released
that ZFS now includes the "primarycache" and "secondarycache" properties.
Is this the "e
Hello,
I've seen in the "what's new" of Solaris 10 update 8 just released that
ZFS now includes the "primarycache" and "secondarycache" properties.
Is this the "equivalent" of the UFS directio? Does it have a similar
behavior?
I'm thinking about having a database on ZFS with this option, a
