From mboxrd@z Thu Jan  1 00:00:00 1970
From: Steve Grubb <sgrubb@redhat.com>
Subject: Re: Benchmarking the performance impact of auditd
Date: Thu, 29 Aug 2013 16:24:34 -0400
Message-ID: <3656760.dzU1SsyfMy@x2>
References: <CAP6dAmeoEoBPxJfD+-ckPYv0x=d5Yu67EOZ0o=tggNi9F3v8xw@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <linux-audit-bounces@redhat.com>
In-Reply-To: <CAP6dAmeoEoBPxJfD+-ckPYv0x=d5Yu67EOZ0o=tggNi9F3v8xw@mail.gmail.com>
List-Unsubscribe: <https://www.redhat.com/mailman/options/linux-audit>,
	<mailto:linux-audit-request@redhat.com?subject=unsubscribe>
List-Archive: <https://www.redhat.com/archives/linux-audit>
List-Post: <mailto:linux-audit@redhat.com>
List-Help: <mailto:linux-audit-request@redhat.com?subject=help>
List-Subscribe: <https://www.redhat.com/mailman/listinfo/linux-audit>,
	<mailto:linux-audit-request@redhat.com?subject=subscribe>
Sender: linux-audit-bounces@redhat.com
Errors-To: linux-audit-bounces@redhat.com
To: linux-audit@redhat.com
List-Id: linux-audit@redhat.com

On Thursday, August 29, 2013 12:59:33 PM zhu xiuming wrote:
> Has someone done some work related to the performance impact of enabling
> auditd on syscalls watching?

Yes, long ago.
http://people.redhat.com/sgrubb/files/lspp-perf.tar.gz

Short story is watches were undistinguishable from cache hit/misses and 
syscall auditing gets more impact as more rules get added and based on how 
complicated the rule is. CPU's have changed so much since I did the 
benchmarking that I won't even hazard a guess as to what the performance hit 
is on current hardware with current kernel.

-Steve