Re: Async and Direct I/O On Solaris using VXFS
Date: Mon, 27 Jun 2011 15:17:12 -0700
Message-ID: <BANLkTi=rTZfYBRQp92zcm-AvFJsOU2FNiQ_at_mail.gmail.com>
The tool "directiostat" looks pretty cool for sparc, on page
http://www.solarisinternals.com/si/downloads/index.php
direct link at
http://www.solarisinternals.com/si/downloads/directiostat
On Mon, Jun 27, 2011 at 2:57 PM, kyle Hailey <kylelf_at_gmail.com> wrote:
>
> What platform are you on? For direct I/O on solaris check out
>
>
> \http://www.pythian.com/news/22727/how-to-confirm-direct-io-is-getting-used-on-solaris/
>
> Another good reference
>
> http://yong321.freeshell.org/oranotes/DirectIO.txt<http://www.facebook.com/l.php?u=http%3A%2F%2Fyong321.freeshell.org%2Foranotes%2FDirectIO.txt&h=b8ece>
>
> - Kyle
> http://dboptimizer.com
>
>
>
>
> 2011/6/27 rajesh koppada <xrajx_at_hotmail.com>
>
>> Hello,
>>
>> How can i confirm that oracle will be doing Direct I/O and Asynchronous
>> i/o with following options.
>> Database FILESYSTEMIO_OPTIONS is set to ALL which means to use,
>> setall - Enables both ASYNC and DIRECT IO
>> we are using VERITAS volume manager 5.0 with VXFS filesystems(We don't
>> have QIO or ODM) and file system mount options are set as follows
>> mincache=direct and conovsync=direct
>> Will Oracle is going to use both direct i/o and asynchronous i/o with
>> these file system options.
>> How can we ensure i am getting direct i/o and Async i/o ?
>> can we enable some trace or something just to ensure we are getting both?
>>
>> Thanks
>> Raj
>>
>
>
-- http://www.freelists.org/webpage/oracle-lReceived on Mon Jun 27 2011 - 17:17:12 CDT