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List:       suse-oracle
Subject:    Re: [suse-oracle] Suse 10 vs SUN E4500 - ORION io tool does not match iostat output
From:       Michael Taylor <mdtaylor69 () yahoo ! com>
Date:       2007-04-24 23:19:15
Message-ID: 497117.46447.qm () web50811 ! mail ! re2 ! yahoo ! com
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If you want a third opinion, install iozone and run the benchmark on both \
filesystems.  It does a good job of removing software and hardware caching effects \
from the physical read/write throughput.

-Michael

Peter Santos <psantos@cheetahmail.com> wrote: -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Exactly,

I ran the ORION tool against the device  /dev/dsk/c5t0d0s0 which is an active lun \
mounted as /z2. I made sure my tests were all readonly .. no writes. This machine \
holds an active standby database only... and during the testing I temporarily stopped \
recovery.

The filesystem is an older version of Veritas without the Quick IO option. The mount \
options are only delaylog, but I'm considering remounting with mincache=direct, and \
convosync=direct.



- -peter



Kevin Closson wrote:
> Kevin,
> does it matter how the filesystem is mounted?
> After all I'm giving ORION a device name called
> /dev/dsk/c5t0d0s0. Does it matter what/how
> a filesystem is mounted on that device?
> 
> ...I'm confused. You are running Orion on the device under the
> filesystem called /z2? I hope you don't write to it.
> 
> 
> 
> 
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