Re: [Condor-users] I/O calls calculation question

[Jaime Frey <jfrey@xxxxxxxxxxx>]

On Oct 30, 2005, at 3:27 PM, xuehai zhang wrote:

> Hi all,
> I wonder if there is any tool provided by Condor to show the I/O  
> statistics about a Condor job. For
> example, how many I/O requests are made by the job during its run  
> time. My question is enlightened
> by the I/O intensive experiments done in a recent paper, "Deploying  
> Virtual Machines as Sandboxes
> for the Grid" (www.cs.wisc.edu/~pradheep/SandboxingWorlds05.pdf).  
> The author ran jobs performing 40
> million random I/O calls over a physical network but I couldn't  
> find how these I/O calls are
> collected in the paper.

This level of detail isn't presented to the user, but you can get it  
out of the shadow daemon log. Set the following in your condor config  
file:

SHADOW_DEBUG = D_SYSCALLS

Then, the shadow daemon will log all of the remote system calls, I/O  
and otherwise.

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