diff --git a/public/tuto2/index.html b/public/tuto2/index.html
index 0eb836b3c60b0fb1a1ba3d2f32793407cabc890d..13b974e931729a8e3520fb79bdc52c374bd4b400 100644
--- a/public/tuto2/index.html
+++ b/public/tuto2/index.html
@@ -3,7 +3,7 @@
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
 <head>
-<!-- 2019-11-29 ven. 11:26 -->
+<!-- 2019-11-29 ven. 11:32 -->
 <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
 <meta name="viewport" content="width=device-width, initial-scale=1" />
 <title>Distributed experiments on Grid'5000 &#x2026; and beyond !</title>
@@ -235,24 +235,24 @@ for the JavaScript code in this tag.
 <h2>Table of Contents</h2>
 <div id="text-table-of-contents">
 <ul>
-<li><a href="#org53a2f0c">1. Benchmarking a real application</a></li>
-<li><a href="#org89b4bbc">2. Before you start</a>
+<li><a href="#orgbf29491">1. Benchmarking a real application</a></li>
+<li><a href="#org0ae0d9c">2. Before you start</a>
 <ul>
-<li><a href="#orge231fe7">2.1. Grid'5000 stuffs</a></li>
-<li><a href="#org955bb0c">2.2. Setup on Grid'5000</a></li>
+<li><a href="#org3bec66a">2.1. Grid'5000 stuffs</a></li>
+<li><a href="#orgc732703">2.2. Setup on Grid'5000</a></li>
 </ul>
 </li>
-<li><a href="#org693a742">3. Deployment time !</a>
+<li><a href="#orgd19e4c7">3. Deployment time !</a>
 <ul>
-<li><a href="#org4b9f680">3.1. Deploy it</a></li>
-<li><a href="#org8c1d302">3.2. Access it</a></li>
+<li><a href="#orgfccfb5a">3.1. Deploy it</a></li>
+<li><a href="#org2923149">3.2. Access it</a></li>
 </ul>
 </li>
-<li><a href="#org019da78">4. Deploy the monitoring stack</a></li>
-<li><a href="#orgab1fed6">5. Benchmark the system</a>
+<li><a href="#org20e388b">4. Deploy the monitoring stack</a></li>
+<li><a href="#org7a3492f">5. Benchmark the system</a>
 <ul>
-<li><a href="#org9837ecb">5.1. Deploy the benchmarking nodes</a></li>
-<li><a href="#org71aba15">5.2. Observations</a></li>
+<li><a href="#org965af87">5.1. Deploy the benchmarking nodes</a></li>
+<li><a href="#org77c2d29">5.2. Observations</a></li>
 </ul>
 </li>
 </ul>
@@ -260,18 +260,18 @@ for the JavaScript code in this tag.
 </div>
 
 
-<div id="outline-container-org53a2f0c" class="outline-2">
-<h2 id="org53a2f0c"><span class="section-number-2">1</span> Benchmarking a real application</h2>
+<div id="outline-container-orgbf29491" class="outline-2">
+<h2 id="orgbf29491"><span class="section-number-2">1</span> Benchmarking a real application</h2>
 <div class="outline-text-2" id="text-1">
 <p>
 In this tutorial we'll cover some aspects of evaluating the performance of a
 real application. We'll work with <code>overleaf</code>. <code>overleaf</code> is a collaborative
-text editor that uses Latex to produce pdf files. Figure <a href="#orgbfb7df7">1</a>
+text editor that uses Latex to produce pdf files. Figure <a href="#orgbea2241">1</a>
 is an overview of the editing part of the software.
 </p>
 
 
-<div id="orgbfb7df7" class="figure">
+<div id="orgbea2241" class="figure">
 <p><a href="./figs/overleaf-v2-editor.png"><img src="./figs/overleaf-v2-editor.png" alt="overleaf-v2-editor.png" /></a>
 </p>
 <p><span class="figure-number">Figure 1: </span>Overview of <code>overleaf</code> editor: on the left users can collaboratively edit the document. On the right the document is rendered.</p>
@@ -292,16 +292,16 @@ the official/commercial instance).</li>
 </div>
 </div>
 
-<div id="outline-container-org89b4bbc" class="outline-2">
-<h2 id="org89b4bbc"><span class="section-number-2">2</span> Before you start</h2>
+<div id="outline-container-org0ae0d9c" class="outline-2">
+<h2 id="org0ae0d9c"><span class="section-number-2">2</span> Before you start</h2>
 <div class="outline-text-2" id="text-2">
 <p>
 Make sure you are ok with the following.
 </p>
 </div>
 
-<div id="outline-container-orge231fe7" class="outline-3">
-<h3 id="orge231fe7"><span class="section-number-3">2.1</span> Grid'5000 stuffs</h3>
+<div id="outline-container-org3bec66a" class="outline-3">
+<h3 id="org3bec66a"><span class="section-number-3">2.1</span> Grid'5000 stuffs</h3>
 <div class="outline-text-3" id="text-2-1">
 <div class="note">
 <p>
@@ -315,8 +315,8 @@ we'll prefer to use higher level tools for now.
 </div>
 
 
-<div id="outline-container-org955bb0c" class="outline-3">
-<h3 id="org955bb0c"><span class="section-number-3">2.2</span> Setup on Grid'5000</h3>
+<div id="outline-container-orgc732703" class="outline-3">
+<h3 id="orgc732703"><span class="section-number-3">2.2</span> Setup on Grid'5000</h3>
 <div class="outline-text-3" id="text-2-2">
 <p>
 Connect to a Grid'5000 frontend of your choice (e.g rennes, nancy &#x2026;)
@@ -343,11 +343,11 @@ $<span style="color: #7590db;">frontend</span><span style="color: #4f97d7;">(</s
 </div>
 </div>
 
-<div id="outline-container-org693a742" class="outline-2">
-<h2 id="org693a742"><span class="section-number-2">3</span> Deployment time !</h2>
+<div id="outline-container-orgd19e4c7" class="outline-2">
+<h2 id="orgd19e4c7"><span class="section-number-2">3</span> Deployment time !</h2>
 <div class="outline-text-2" id="text-3">
 <p>
-Figure <a href="#org4421790">2</a> represents a simplified view of what we'll deploy. In blue
+Figure <a href="#orgbc6f46d">2</a> represents a simplified view of what we'll deploy. In blue
 some services of <code>overleaf</code> are represented. First the Web portal is the entry
 point to all the user requests. The three other services in the picture are
 involved when compiling a document. The compilation service interacts with the
@@ -358,7 +358,7 @@ involved to provide the chat feature, history feature, real-time interaction
 </p>
 
 
-<div id="org4421790" class="figure">
+<div id="orgbc6f46d" class="figure">
 <p><a href="./figs/simple_compilation.png"><object type="image/svg+xml" data="./figs/simple_compilation.svg" class="org-svg">
 Sorry, your browser does not support SVG.</object></a>
 </p>
@@ -378,8 +378,8 @@ After the deployment you'll be able to:
 </div>
 </div>
 
-<div id="outline-container-org4b9f680" class="outline-3">
-<h3 id="org4b9f680"><span class="section-number-3">3.1</span> Deploy it</h3>
+<div id="outline-container-orgfccfb5a" class="outline-3">
+<h3 id="orgfccfb5a"><span class="section-number-3">3.1</span> Deploy it</h3>
 <div class="outline-text-3" id="text-3-1">
 <div class="org-src-container">
 <pre class="src src-bash">$<span style="color: #7590db;">frontend</span><span style="color: #4f97d7;">(</span>venv<span style="color: #4f97d7;">)</span>: python overleaf.py deploy --cluster=paravance
@@ -396,8 +396,8 @@ After the deployment you'll be able to:
 </div>
 </div>
 
-<div id="outline-container-org8c1d302" class="outline-3">
-<h3 id="org8c1d302"><span class="section-number-3">3.2</span> Access it</h3>
+<div id="outline-container-org2923149" class="outline-3">
+<h3 id="org2923149"><span class="section-number-3">3.2</span> Access it</h3>
 <div class="outline-text-3" id="text-3-2">
 <p>
 To know where your services are installed you can run: 
@@ -449,8 +449,8 @@ You can access the web portal of your friends by replacing the address of the we
 </div>
 </div>
 
-<div id="outline-container-org019da78" class="outline-2">
-<h2 id="org019da78"><span class="section-number-2">4</span> Deploy the monitoring stack</h2>
+<div id="outline-container-org20e388b" class="outline-2">
+<h2 id="org20e388b"><span class="section-number-2">4</span> Deploy the monitoring stack</h2>
 <div class="outline-text-2" id="text-4">
 <div class="org-src-container">
 <pre class="src src-bash">$<span style="color: #7590db;">frontend</span><span style="color: #4f97d7;">(</span>venv<span style="color: #4f97d7;">)</span>: python overleaf.py monitoring
@@ -467,8 +467,8 @@ You can access the web portal of your friends by replacing the address of the we
 </div>
 </div>
 
-<div id="outline-container-orgab1fed6" class="outline-2">
-<h2 id="orgab1fed6"><span class="section-number-2">5</span> Benchmark the system</h2>
+<div id="outline-container-org7a3492f" class="outline-2">
+<h2 id="org7a3492f"><span class="section-number-2">5</span> Benchmark the system</h2>
 <div class="outline-text-2" id="text-5">
 <p>
 Benchmarking will consist in generating some load on the system. 
@@ -486,8 +486,8 @@ before destroying it
 </p>
 </div>
 
-<div id="outline-container-org9837ecb" class="outline-3">
-<h3 id="org9837ecb"><span class="section-number-3">5.1</span> Deploy the benchmarking nodes</h3>
+<div id="outline-container-org965af87" class="outline-3">
+<h3 id="org965af87"><span class="section-number-3">5.1</span> Deploy the benchmarking nodes</h3>
 <div class="outline-text-3" id="text-5-1">
 <div class="org-src-container">
 <pre class="src src-bash">$<span style="color: #7590db;">frontend</span><span style="color: #4f97d7;">(</span>venv<span style="color: #4f97d7;">)</span>: python overleaf.py bench
@@ -504,8 +504,8 @@ before destroying it
 </div>
 </div>
 
-<div id="outline-container-org71aba15" class="outline-3">
-<h3 id="org71aba15"><span class="section-number-3">5.2</span> Observations</h3>
+<div id="outline-container-org77c2d29" class="outline-3">
+<h3 id="org77c2d29"><span class="section-number-3">5.2</span> Observations</h3>
 <div class="outline-text-3" id="text-5-2">
 <p>
 Observations can be made on two portals:
@@ -528,6 +528,15 @@ consumption and some application metrics</li>
 (in term of CPU/IO &#x2026; consumed)</li>
 </ul>
 
+</div>
+
+<div class="note">
+<p>
+To help you, you can introduce soe <b>variations</b> in the generated load. See
+<code>python overleaf.g5k bench --help</code> options; you'll be able to change the
+frequency of creation of projects of the different types.
+</p>
+
 </div>
 </div>
 </div>
@@ -535,7 +544,7 @@ consumption and some application metrics</li>
 </div>
 <div id="postamble" class="status">
 <p class="author">Author: Matthieu Simonin</p>
-<p class="date">Created: 2019-11-29 ven. 11:26</p>
+<p class="date">Created: 2019-11-29 ven. 11:32</p>
 <p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p>
 </div>
 </body>
diff --git a/public/tuto2/index.org b/public/tuto2/index.org
index b29838f2a4698ae188c4b1c929029bef8bc60c28..6455d7bed2376ea957e3852ee2be52c78af71637 100644
--- a/public/tuto2/index.org
+++ b/public/tuto2/index.org
@@ -189,3 +189,11 @@
   - They are 3 types of projects that are compiled, can you characterize each one of them ?
     (in term of CPU/IO ... consumed)
   #+end_question
+
+  #+begin_note
+  To help you, you can introduce soe *variations* in the generated load. See
+  ~python overleaf.g5k bench --help~ options; you'll be able to change the
+  frequency of creation of projects of the different types.
+  #+end_note
+
+