Re: Disk I/O benchmarks and monitoring

On Nov 28, 2006, at 7:21 AM, Andrew.Townsend@xxxxxxxxx wrote:

Sandor,

I would be very much appreciated if you could do that. Very much.

I downloaded the latest source tarball from iozone.org, and compiled it using the "AIX-LF" target, to enable large file support. You can download the entire tarball, including the original source and documentation, plus the compiled binary "iozone", from ...

http://www.stanford.edu/~ssklar/iozone3_279-rs_aix52.tar

The actual program is "iozone3_279/src/current/iozone"

Is there any concerns running iozone with SDD or RDAC?

Not that I'm aware of, though I don't have either of those disk systems around. I've run it on internal scsi drives, Fibre SAN attached EMC drives, and NFS mounted filesystems, without any problems. Since it doesn't do anything other then standard filesystem operations, it shouldn't cause any problems.

Good luck!

-s-


Andrew Townsend
TSM/AIX Administrator
Office: (215) 648-8304
Bisys Retirement Services
200 Dryden Road
Dresher PA 19025




"Sandor W. Sklar"
<ssklar@STANFORD.
EDU> To
Sent by: IBM AIX aix-l@xxxxxxxxxxxxx
Discussion List cc
<aix-l@Princeton.
EDU> Subject
Re: Disk I/O benchmarks and
monitoring
11/27/2006 11:42
PM


Please respond to
IBM AIX
Discussion List
<aix-l@Princeton.
EDU>






iozone is really easy to build ... have you tried? I don't have any
5.3 systems, but if you need it, I can compile it on 64-bit 5.2 and
make it available to you.

-s-

On Nov 27, 2006, at 9:31 AM, Andrew.Townsend@xxxxxxxxx wrote:

Hello,

What tools do you use to monitor and graph disk I/O throughput?

iozone looks good but there doesn't seem to be a build for AIX 5.3
at the
64 bit level.

I need to run some tests on a new FastT that we're getting. We
expect to
put a database on it that performs a fair amount of random reads
but mostly
sequential writes. We're comparing RAID5 to RAID10 performance to
see if
the price difference is worth any additional performance we'd see
in RAID
10. It will be behind a 2-node SVC with plenty of cache so I'm
interested
to see how well the RAID5 stacks up to the RAID10.

Thanks,

Drew

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