perf issues etc

Hi all,

I want to test the performance hit when a volume filter is attached to the
stack. I understand that IO meter is a good versatile tool for this purpose.
But I am not sure what kind of settings I need for IoMeter to simulate:
MS Exchange IO patterns
Oracle and MSSQL like patterns
File server liek patterns.

Can some one help with these?

We are also examining Jetstress and LoadSim.

  • amitr0

amitr0 wrote:

Hi all,

I want to test the performance hit when a volume filter is attached to
the stack. I understand that IO meter is a good versatile tool for this
purpose. But I am not sure what kind of settings I need for IoMeter to
simulate:
MS Exchange IO patterns
Oracle and MSSQL like patterns
File server liek patterns.

IO Meter is definitely a good tool to create different access patterns
but, from past experience, trying to simulate the above applications
will be difficult. The main issue I have found is that the access
patterns vary depending on many outside pressures including application
load, system load and the overlying application calling into the
controlled data.

In general you can implement a volume filter which would gather this
access information. From this information you can get general ideas of
how they operate. Just be sure to run the tests from which you gather
the access information under different load scenarios.

As well, just running IO Meter in differing test configurations with and
without your filter will give you a very good idea of the performance
overhead. Sometimes yielding a better interpretation of the performance
overhead.

Pete

Can some one help with these?

We are also examining Jetstress and LoadSim.


Kernel Drivers
Windows File System and Device Driver Consulting
www.KernelDrivers.com
866.263.9295

Oracle has a tool named Orion to simulate Oracle DB access behavior. You can download it from http://www.oracle.com/technology/software/tech/orion/index.html

Thanks
Wayne