Message-ID: <1088140750.40dbb5ce0fd50@www.imp.polymtl.ca>
Date: Fri, 25 Jun 2004 07:19:10 +0200
From: Guillaume Thouvenin <guillaume.thouvenin@polymtl.ca>
To: linux-kernel@vger.kernel.org
Subject: [Patch] Enhanced Linux System Accounting for 2.6.7
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Hello,

    Here is a new patch for kernel 2.6.7. You can download it from 
sourceforge at 
http://prdownloads.sourceforge.net/elsa/patch-2.6.7-elsa?download
  
    This patch provides structures and functions to do accounting
for a group of process. There is two parts. 

  On one hand there is two APIs that allow the creation and the 
destruction of an item called a "bank" that will contain an 
group of processes. There is also two other routines that can 
add or remove processes in a bank.

  On the other hand, you have the accounting mechanism that used bank
to perform BSD-like accounting for a group of process. We used ioctl()
interface to create/destroy a bank and also to add/remove a process in
a bank. Currently, device driver is dev/elsacct and the major number
is dynamically allocated, therefore you need to check the number in the
/proc/devices and create the corresponding device. A sample code is
given at:
http://cvs.sourceforge.net/viewcvs.py/elsa/tests/elsa_cmd.c?rev=1.7&view=markup
 
    Currently we do BSD-like accounting. The next step is to identify what
kind of metrics can be interesting for accounting. We started to describe
that point on a withpaper that is available at:
http://sourceforge.net/docman/display_doc.php?docid=23446&group_id=105806
This paper describes differences between two accounting systems that are
ELSA and CSA.
 
    Every comments are welcome, 

The ELSA poject team (http://elsa.sourceforge.net)
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