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Amit Kumar Saha [amitsaha.in at gmail.com]
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
Mulyadi Santosa [mulyadi.santosa at gmail.com]
Hi...
On Mon, Mar 10, 2008 at 1:54 PM, Amit Kumar Saha <[email protected]> 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
Amit Kumar Saha [amitsaha.in at gmail.com]
On Mon, Mar 10, 2008 at 2:16 PM, Mulyadi Santosa <[email protected]> >
> 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
Ramon van Alteren [ramon at forgottenland.net]
Amit Kumar Saha wrote:
> On Mon, Mar 10, 2008 at 2:16 PM, Mulyadi Santosa <[email protected]> > > >> 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 readDepending 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
Amit Kumar Saha [amitsaha.in at gmail.com]
On Tue, Mar 11, 2008 at 1:22 PM, Ramon van Alteren <[email protected]>
> 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