RE: 10G and UFS - long write times
- From: "Hallas, John, Tech Dev" <John.Hallas@xxxxxxxxxxxxxxxxx>
- To: <hornuff@xxxxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 8 Jun 2006 10:28:32 +0100
True Stig.
However that implies that there will be no difference between 9i and 10G
and I am seeing a big difference.
The only set up I have not got yet is a 9i install and a 10G on the same
server with local disk. I am working on that next
John
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Stig Hornuff
Sent: 08 June 2006 10:24
To: Hallas, John, Tech Dev; F.Castillo@xxxxxxxxxxxxx;
oracle-l@xxxxxxxxxxxxx
Subject: RE: 10G and UFS - long write times
As I read your description you are basically comparing I/O writes on SAN
disks and local disks.
Is that what you are doing on various Oracle versions?
If it is, then note: Solaris using local disks (ie. in the very same box
as
the CPU) will Always perform a write all they way down on disk -
verified
writes!!
If disks are remote/attached Solaris "allows" itself to rely on writes
being
successfully submittet to the remote I/O-systems (ie. the SAN, T3,
whatever....).
In simple words: Local disk are waaaaayyyyy slower than SAN and remote
disk
subsystems.
/S
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