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Re: Integrate delay accounting with systemtap?

From: Mike Mason <mmlnx at us dot ibm dot com>
To: ananth at in dot ibm dot com
Cc: SystemTAP <systemtap at sources dot redhat dot com>
Date: Wed, 11 Jul 2007 11:03:25 -0700
Subject: Re: Integrate delay accounting with systemtap?
References: <20070711060617.GA16126@in.ibm.com>

We can easily add functions to access the task_delay_info values in task_struct. Would that be sufficient or are you thinking of something more than that?

Mike

Ananth N Mavinakayanahalli wrote:

Hi,

The delay accounting infrastructure has been part of the mainline kernel
for sometime now. From what I've heard from customer-facing people, it
is a great tool to determine where the performance bottlenecks are.

See Documentation/accounting/* for more information about this
infrastructure.

Combining this feature with the features SystemTap currently provides
would be a good thing. Would it therefore be possible to add support for
this infrastructure in SystemTap?

Ananth

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