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Any one experienced with Iozone?

Amit Kumar Saha [amitsaha.in at gmail.com]


Mon, 10 Mar 2008 12:24:08 +0530

Hello,

I am currently trying to get some experience using 'Iozone' to obtain some I/O test results on my Linux 2.6 disk partitions. Subsequently, I would like to use my knowledge to do some analysis in a RAID project I am working on.

Do we have anyone here experienced with using the 'Iozone' tool (http://www.iozone.org/) ? It would be nice to know of your experiences.

Thanks, Amit

-- 
Amit Kumar Saha
*NetBeans Community
Docs Coordinator*
Writer, Programmer, Researcher
http://amitsaha.in.googlepages.com
http://amitksaha.blogspot.com


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Mulyadi Santosa [mulyadi.santosa at gmail.com]


Mon, 10 Mar 2008 15:46:10 +0700

Hi...

On Mon, Mar 10, 2008 at 1:54 PM, Amit Kumar Saha <amitsaha.in@gmail.com> wrote:

> Hello,
>
>  I am currently trying to get some experience using 'Iozone' to obtain
>  some I/O test results on my Linux 2.6 disk partitions. Subsequently, I
>  would like to use my knowledge to do some analysis in a RAID project I
>  am working on.

Specificly, what do you want to know? Once I used it during my experiments ... Check my Sys Admin Magazine's article that once use it to see how different read-ahead algorithm perfomed in many disk read-write characteristics:

http://www.samag.com/documents/s=10101/sam0616a/0616a.htm

regards,

M


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Amit Kumar Saha [amitsaha.in at gmail.com]


Tue, 11 Mar 2008 12:57:51 +0530

On Mon, Mar 10, 2008 at 2:16 PM, Mulyadi Santosa <mulyadi.santosa@gmail.com> >

>  Specificly, what do you want to know? Once I used it during my
>  experiments ... Check my Sys Admin Magazine's article that once use it
>  to see how different read-ahead algorithm perfomed in many disk
>  read-write characteristics:
>
>  http://www.samag.com/documents/s=10101/sam0616a/0616a.htm

Nice read :-)

Specifically, my interest in 'Iozone' is because:

I am experimenting with setting up a RAID device with different levels, and varying other parameters such as 'stripe' size and miscellaneous (yet undecided) parameters. Using 'Iozone' I would like to obtain some test results such as the time required to read/write chunks of data from the RAID device.

I hope, I am making myself clear here.

comments/suggestions would be appreciated.

Thanks, Amit

-- 
Amit Kumar Saha
*NetBeans Community
Docs Coordinator*
Writer, Programmer, Researcher
http://amitsaha.in.googlepages.com
http://amitksaha.blogspot.com


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Ramon van Alteren [ramon at forgottenland.net]


Tue, 11 Mar 2008 08:52:10 +0100

Amit Kumar Saha wrote:

> On Mon, Mar 10, 2008 at 2:16 PM, Mulyadi Santosa <mulyadi.santosa@gmail.com> >
>   
>>  Specificly, what do you want to know? Once I used it during my
>>  experiments ... Check my Sys Admin Magazine's article that once use it
>>  to see how different read-ahead algorithm perfomed in many disk
>>  read-write characteristics:
>>
>>  http://www.samag.com/documents/s=10101/sam0616a/0616a.htm
>>     
>
> Nice read :-)
>
> Specifically, my interest in 'Iozone' is because:
>
> I am experimenting with setting up a RAID device with different
> levels, and varying other parameters such as 'stripe' size and
> miscellaneous (yet undecided) parameters. Using 'Iozone' I would like
> to obtain some test results such as the time required to read/write
> chunks of data from the RAID device.
>
> I hope, I am making myself clear here.
>
> comments/suggestions would be appreciated.
>   
Depending on what you are testing for you might find the information below interesting: http://www.mysqlperformanceblog.com/2008/03/05/raid-system-performance-surprises/

These are LSI based raid-controllers which are commonly found in Dell servers (Perc 4-6i series) but LSI is on a lot of raid cards as OEM chip supplier.

Regards,

Ramon


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Amit Kumar Saha [amitsaha.in at gmail.com]


Tue, 11 Mar 2008 13:34:48 +0530

On Tue, Mar 11, 2008 at 1:22 PM, Ramon van Alteren <ramon@forgottenland.net>

>  Depending on what you are testing for you might find the information
>  below interesting:
>  http://www.mysqlperformanceblog.com/2008/03/05/raid-system-performance-surprises/
>
>  These are LSI based raid-controllers which are commonly found in Dell
>  servers (Perc 4-6i series) but LSI is on a lot of raid cards as OEM chip
>  supplier.

I think I missed saying that I am implementing a software RAID.

Thanks for the link anyways!

-- 
Amit Kumar Saha
*NetBeans Community
Docs Coordinator*
Writer, Programmer, Researcher
http://amitsaha.in.googlepages.com
http://amitksaha.blogspot.com


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