full-disclosure - fs rootkit performance footprint [was Re: "IO wait chains" in Linux??]

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Message-ID: <AANLkTikBa1gpN6Jo1qPuaFi6XChuxX4YJmLFF0_DQfrF@mail.gmail.com>
Date: Mon, 7 Feb 2011 17:00:44 -0800
From: coderman <coderman@...il.com>
To: "Cal Leeming [Simplicity Media Ltd]" <cal.leeming@...plicitymedialtd.co.uk>
Cc: full-disclosure@...ts.grok.org.uk, Valdis.Kletnieks@...edu
Subject: fs rootkit performance footprint [was Re: "IO
 wait chains" in Linux??]

On Mon, Feb 7, 2011 at 4:49 PM, coderman <coderman@...il.com> wrote:
> ...general idiom is
> setup measurement and load injection, then executive to define peak /
> best capacity configuration.
> ...
> oprofile / kprobes /sysprof help with measurement rather than load injection.

interestingly, memory backed file system performance benchmarks
exhibit a distinct performance degredation depending on the type of
kernel mode rootkit hooking implemented on a compromised host.  a poor
rootkit revealer, but surprisingly effective. a good exercise for
reader...

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