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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<link rel="canonical" href="http://bestchai.bitbucket.io/tsviz/">
<link rel="shortcut icon" href="images/favico.ico" type="image/x-icon" />
<title>TSViz</title>
<link href="css/style.css" type="text/css" rel="stylesheet">
<!-- DEPENDENCIES -->
<script src="local_scripts/load1.d3.v4.min.js"></script>
<script src="local_scripts/load2.d3-tip.js"></script> <!--https://github.com/VACLab/d3-tip-->
<script src="local_scripts/load3.jquery-3.2.1.min.js"></script>
<script src="js/jquery.ruler.js"></script>
<style type="text/css">
#vizContainer svg line.hidden-link {
stroke-width: 1px;
stroke: url(#gedge);
}
</style>
</head>
<body>
<div class="load">h</div>
<section class="home">
<header class="icon">
<ul class="tabs">
<li class="active">h</li>
<li>i</li>
<li class="disabled">a</li>
</ul>
<div id="versionContainer"></div>
</header>
<div class="content">
<h1>TSViz</h1>
<h2>
The <strong>TSViz</strong> vis­ual­izat­ion engi­ne gene­r­ate­s inter­active comm­uni­ca­tion graphs from execution logs of complex multi-threaded systems.
</h2>
<button class="try">Try out TSViz</button>
<h3>What am I looking at?</h3>
<p>
In the visualization:
<ul>
<li>
Time flows from top to bottom.
</li>
<li>
The left panel shows the log and the middle panel displays a <a href="http://en.wikipedia.org/wiki/Directed_acyclic_graph">DAG</a> of the partially ordered vector timestamps recorded in the input log, the events in this DAG are placed <i>to scale</i> relative to each other according to physical clock timestamps in the log.
</li>
<li>
A vertical line with a box at the top is a <strong>thread timeline</strong> representing a single thread of execution. Each thread is associated with a color.
</li>
<li>
Circles on a thread timeline are <strong>events</strong> that were executed by the thread.
</li>
<li>
Diagonal lines connecting two events represent the
<a href="http://en.wikipedia.org/wiki/Happened-before">happened-before</a> relation between the events: the higher of the two events happened <i>before</i> the second event.
</li>
<li>
Dashed lines represent transitive communication edges. These only appear when a thread is hidden, and two threads that are not hidden communicated indirectly through this thread.
</li>
<li>
Larger circles represent merged local events. These have a number inside of them, indicating the number of events that they represent.
</li>
<li>
Radiating lines that fade out represent communication edges to threads that are currently hidden from view.
</li>
</ul>
</p>
<h3>How do I interact with the visualization?</h3>
<p>
The visualization supports the following actions:
<ul>
<li>
<strong>Show thread name or event info</strong>
<br>
Click on a thread box or an event circle.
</li>
<li>
<strong>Hide a thread timeline</strong>
<br>
Click a thread box and select "hide". This
will remove the thread and its timeline from
view. You can hide more than one thread.
</li>
<li>
<strong>Filter by communication to thread(s)</strong>
<br>
Click a thread box and select "filter". The
graph will be filtered to show only those
threads/events that communicate with the
filtered thread. You can filter by more than
one thread.
</li>
<li>
<strong>Expand/collapse non-communicating events</strong>
<br>
TSViz collapses adjacent thread events not
incident on any communication edges into
larger circles. Click on one of these nodes
and select "expand" to undo this collapsing.
</li>
<li>
<strong>Search for keywords or subgraphs</strong>
<br>
TSViz supports keyword search across the
parsed fields. Search supports logical
connectives and regular expressions. You can
also search for subgraphs or communication
topologies of interest. You can search for a
pre-defined structure like broadcast
or request-response, or you can define and
search for a custom structure.
</li>
<li>
<strong>Show and hide differences between executions</strong>
<br>
When viewing two executions side-by-side,
click on "show differences" to highlight the
differences between two executions. Hosts that
are not common to both executions are
represented as rhombuses. Threads present in
both executions have their events compared by
the <code>event</code> capture group. Different
events are drawn as rhombuses.
</li>
<li>
<strong>Explore execution clusters</strong>
<br>
For logs with multiple executions, click on the
"clusters" tab to separate executions into
different groups based on a chosen metric.
Cluster by the number of threads to group
executions by the midpoint between the smallest
and largest number of threads.
Cluster by execution comparison to see an overview
of how executions differ from a selected base.
</li>
<li>
<strong>Search for network motifs</strong>
<br>
Click on the "motifs" tab to find frequently
occurring communication patterns within and
across executions. Search for 2, 3 or 4-event
motifs that occur in at least 50% of the
executions or that appear at least 5 times
within a single execution.
</li>
</ul>
</p>
<h3 id="helpsectiontitle">How is this tool useful?</h3>
<p>
Here are four use-cases that TSViz helps to support:
<ul>
<li>
<strong>Performance debugging.</strong>
<br>
Understand the how long events took to
execute. TSViz orders events to scale across
threads using physical clock timestamps in the
log.
</li>
<li>
<strong>Reason about ordering in a concurrent setting</strong>.
<br>
Visualize concurrency and the happened-before
relation to understand if two events occurred
concurrently, or if one happened before the
other.
</li>
<li>
<strong>Analyze activity at threads that matter</strong>.
<br>
Hide threads (and their log lines) for a more focused visualization. Filter by communication to a thread to see only those events at other threads that were likely to have influenced the execution of a thread you care about.
</li>
<li>
<strong>Execution comparison and
differencing</strong>
<br>
Use TSViz to thread logs containing multiple
executions. Compare executions pairwise,
side-by-side. Use TSViz to highlight event and
host differences between two executions to
understand where the executions diverge.
</li>
</ul>
</p>
<h3>What is the input log format to the tool?</h3>
<p>(Also, see the <a href="https://bitbucket.org/mhnnunes/tsviz/wiki/LogFormat">LogFormat</a> wiki page.)
<p>
You can specify the log format using a regular expression on the Input page. The regular expression must contain the following three named capture groups:
<ul>
<li><strong><code>timestamp</code>:</strong> the physical clock timestamp of the event</li>
<li><strong><code>event</code>:</strong> the description of the event</li>
<li><strong><code>host</code>:</strong> the name of the thread, thread, or host that executed the event</li>
<li><strong><code>clock</code>:</strong> the vector clock associated with the event, in JSON format</li>
</ul>
</p>
<p>
You can also specify other capture groups other than <code>event</code> to capture <em>fields</em> (such as date, IP, priority) which are shown in the sidebar while hovering over an event in the visualization. These fields, unless sub-groups of the <code>event</code> group, will not be displayed as part of the event message.
</p>
<p>
For example, to parse log entries like this one:
<pre>1456966522871394967 Exiting eviction_wait_handle.0x18988c0__wt_spin_unlock
thread4 {"thread4":58}</pre>
We would use the following parser RegExp:
<pre>(?<timestamp>(\d*)) (?<event>.*)\n(?<host>\w*) (?<clock>.*)</pre>
</p>
<p>
The capture groups in TSViz is not standard regexp
syntax. We recommend using a plain
<a href="https://www.debuggex.com/">JS regexp tester</a>
with regular capture groups to develop expressions, and
name the capture groups afterwards.
</p>
<h3>How can I generate logs to use in TSViz?</h3>
<p>
You can study the execution of any system that
produces logs in a format that can be parsed using the
RegExp mechanism above.
</p>
<p>
We recommend <a href="https://dinamite-toolkit.github.io/">DINAMITE</a> instrumentation tool that outputs
TSViz-compatible logs.
</p>
<h3>More information</h3>
<ul>
<li><a href="https://bitbucket.org/mhnnunes/tsviz">TSViz source code</a></li>
</ul>
</div>
<div class="shivizexample">
<img src="images/tsviz-example.png" style="padding-top: 0px;"/><br/>
<img src="images/node-time-diff.png"/><br/>
<img src="images/edge-selection.png"/><br/>
<img src="images/thread-selection.png"/><br/>
<img src="images/search.png"/><br/>
<img src="images/diff.png"/><br/>
<img id="clusterImg" src="images/cluster.png"/>
<img src="images/motifs.png">
</div>
</div>
</section>
<section class="input">
<table>
<tr>
<td class="left">
<header class="icon">
<ul class="tabs">
<li>h</li>
<li class="active">i</li>
<li class="disabled">a</li>
</ul>
</header>
<h3>Options</h3>
<div id="file_input">
<label>Select a file: <input type="file" id="file"></label>
<span id="file_icon"><a
href="https://bitbucket.org/mhnnunes/tsviz/wiki/LogFormat">d</a></span>
<div id="file_desc">Upload a log by selecting a file with the following format: <br><br>
<li> The first line of the file is the log parsing regular expression. If left empty, the default regular expression
<span class="regex">"(?<event>.*)\n(?<host>\S*) (?<clock>{.*})"</span> will be used.<br>
<li> The second line of the file is the multiple executions regular expression delimiter. This can be left empty if the log does not contain multiple executions. <br>
<li> The rest of the file is the log.<br><br>
<div>Click the <b>?</b> for more information.</div>
</div>
</div>
<div class="option">
<label>Log parsing regular expression: <input class="mono" type="text" id="parser"></label>
</div>
<div class="option">
<label>Multiple executions regular expression delimiter: <input class="mono" type="text" id="delimiter"></label>
</div>
<div class="option">
Sort threads in
<select id="ordering">
<option value="ascending">ascending</option>
<option value="descending" selected>descending</option>
</select> order by:
<br>
<label><input id="hostsortLength" name="host_sort" type="radio" checked value="length"> # events</label>
<label><input id="hostsortOrder" name="host_sort" type="radio" value="order"> appearance in log</label>
</div>
<div class="option">
<label>Select a value for the smallest time difference in the graph: <input type="text" id="timeunit" name="timeunit" value="1"></label>
<select id="graphtimescale">
<option value="ns">nanoseconds</option>
<option value="us" selected="selected">microseconds</option>
<option value="ms">milliseconds</option>
<option value="s">seconds</option>
</select>
</div>
<div class="option">
<label>Select a collapsing strategy for the graph:</label><br>
<label><input type="radio" id="coll_local" name="coll_str" value="local">local nodes</label>
<label><input type="radio" id="coll_time" name="coll_str" value="time">close in time</label>
</div>
<button id="visualize" disabled>Visualize</button>
</td>
<td class="right">
<div id="examples">
Examples:
<a class="log-link" href="" data-log="tsviz_fslock_24t_4sp.log" data-ordering="descending" data-hostsort="#hostsortLength" data-parser="(?<timestamp>(\d*)) (?<event>.*)\n(?<host>\w*) (?<clock>.*)">WiredTiger KV-store lock contention</a>
<a class="log-link" href="" data-log="tsviz_shared_var_4_threads.log" data-ordering="descending" data-hostsort="#hostsortLength" data-parser="(?<timestamp>(\d*)) (?<event>.*)\n(?<host>\w*) (?<clock>.*)">WiredTiger shared variable contention</a>
</div>
<textarea id="input" spellcheck="false"></textarea>
</td>
</tr>
</table>
</section>
<section class="visualization">
<!-- <div class="bg"></div> -->
<header class="icon">
<ul class="tabs">
<li>h</li>
<li>i</li>
<li class="active">a</li>
</ul>
</header>
<div id="graph">
<div id="searchbar">
<div id="bar">
<input type="text" class="mono" placeholder="Search the visualization">
<div class="clear">
<div class="one"></div>
<div class="two"></div>
</div>
<button id="searchButton" disabled>Search</button>
<button class="nav" id="prevButton"><</button>
<span class="nav" id="numFound">3</span>
<button class="nav" id="nextButton">></button>
</div>
<div id="panel">
<ul class="searchTabLinks">
<li class="default"><a href="textTab">Text Search</a></li>
<li><a href="structuredTab">Structured Search</a> </li>
</ul>
<div id="textTab" class="tab">
<b>Text search</b>: search for log lines/events that match a text query.
<div class="out">
<p>
<dl>
<dt><b>Examples:</b></dt>
<dt><code>sync</code></dt>
<dd>Find events containing the text "sync" in any field.</dd>
<dt><code>priority=CRITICAL && text=/fail.*/</code></dt>
<dd>Find events with "priority" field set to "CRITICAL" and with "text" field matching the specified regex. Supported logical operators are: <code>&&</code>, <code>||</code>, <code>^</code></dd>
<dt><code>ip="216.58.216.174"</code></dt>
<dd>String literals containing non-alphanumeric symbols must be surrounded by quotes.</dd>
<dt><code>location="EC2" || (isMobile && useragent=/.*Webkit.*/)</code></dt>
<dd>Use parenthesis to specify order of operations.</dd>
</dl>
</p>
</div>
<b>Search for events that occur between two events:</b>
Enter the start and end events below.
<div class="eventbased">
<input type="checkbox" id="onlyCommunication">Search only communication edges between hosts.<br>
<div id="startbar">
<input type="text" class="mono" placeholder="Start event">
<div class="clear">
</div>
</div>
<div id="endbar">
<input type="text" class="mono" placeholder="End event">
<div class="clear">
</div>
</div>
</div>
</div>
<div id="structuredTab" class="tab">
<ul class="structuredSearches">
<li id="customStructure">
<b>Search for a custom structure:</b>
draw a graph structure below (add
threads, events, click and drag to
add inter-event edges).<br>
<div class="hostConstraintDialog">
<input id="hostConstraint" type="text" placeholder="Add constraint">
</div>
<table>
<tr>
<td>
<svg>
<circle r="5" class="hover"></circle>
</svg>
</td>
<td>
<button id="addButton" class="add">+</button>
</td>
</tr>
</table>
</li>
<li id="predefinedStructure">
<b>Search for a pre-defined structure:</b>
Select one of the options below to find
the specified structure.
<div class="predefined">
<button name="request-response">Request-response</button>
<button name="broadcast">Broadcast</button>
<button name="gather">Gather</button>
</div>
</li>
</ul>
</div>
</div>
<!-- <div id = "sliderGroup">
<div id = "sliderContainer">
<p class="range-field">
<input type = "range" name = "zoomSlider" id = "zoomSlider" value = "50" min = "0" max = "100">
</p>
</div>
</div> -->
</div>
<div id="hostBar"></div>
<div id="vizContainer"></div>
</div>
<div id="sidebar">
<!-- <button class="pairwiseButton" title="Show logs side by side">Pairwise</button>
<button class="diffButton" title="Show differences between logs">Show Differences</button> -->
<!-- =============================== MULTI-EXECUTIONS =============================== -->
<div id="multiExecToggle" class="separator" title="Click to toggle Multiple Execution information"> Multiple Executions </div>
<div id="multiExecTab" class="sidebarTab">
<button class="pairwiseButton">Pairwise</button>
<button class="diffButton">Show Differences</button>
</div>
<!-- =============================== NODE-INFO =============================== -->
<div id="nodeInfoToggle" class="separator" title="Click to toggle node information"> Node information </div>
<div id="nodeInfoTab" class="sidebarTab">
<div class="info">
<table class="event">
<tr class="source">
<th class="circle">
<svg id="sourceCircle" width="10" height="10">
<circle cx="5" cy="5" r="5" fill="white" />
</svg>
</th>
<td class="name"></td>
</tr>
<tr>
<th></th>
<td class="innerTable">
<table class="fields"></table>
</td>
</tr>
<tr class="target">
<th class="circle">
<svg id="targetCircle" width="10" height="10">
<circle cx="5" cy="5" r="5" fill="white" />
</svg>
</th>
<td class="name"></td>
</tr>
</table>
<table class="tdiff"></table>
</div>
<div class="nodeConnection">
<svg width="176px" height="192px">
<line></line>
</svg>
</div>
</div>
<!-- =============================== SEARCH-RESULTS =============================== -->
<div id="searchResultsToggle" class="separator" title="Click to toggle search results"> Search results </div>
<div id="searchResultsTab" class="sidebarTab">
<div class="chart"></div>
<div class="chartButtons"></div>
</div>
<!-- =============================== GRAPH-OPTIONS =============================== -->
<div id="graphOptionsToggle" class="separator" title="Click to toggle graph options"> Graph options </div>
<div id="graphOptionsTab" class="sidebarTab">
<div class="option">
<label>Select a collapsing strategy for the graph:</label><br>
<label><input type="radio" id="coll_local_viz" name="coll_str_viz" value="local">local nodes</label><br>
<label><input type="radio" id="coll_time_viz" name="coll_str_viz" value="time">close in time</label>
</div>
<div class="option">
<label>Select a value for the smallest time difference in the graph: <input type="text" id="timeunitviz" name="timeunit" value="1"></label>
<select id="graphtimescaleviz">
<option value="ns">nanoseconds</option>
<option value="us" >microseconds</option>
<option value="ms">milliseconds</option>
<option value="s">seconds</option>
</select>
<button id="refreshgraph">Refresh Graph</button>
</div>
</div>
</div>
<div class="dialog">
<div class="triangle"></div>
<button name="hide" class="hide hb">Hide</button>
<button name="filter" class="filter hb">Highlight</button>
<button name="collapse" class="collapse">Toggle Collapse</button>
</div>
</section>
<div id="errorbox" class="error"></div>
<div id="errorcover" class="error"></div>
<svg id="defs">
<defs>
<linearGradient id="gedge">
<stop stop-color="#999" offset="0" />
<stop stop-color="#fff" offset="1" />
</linearGradient>
</defs>
</svg>
<!-- REPLACED DURING DEPLOYMENT: -->
<script type="text/javascript" src="js/dev.js"></script>
<!-- -->
<script type="text/javascript" src="js/searchBar.js"></script>
<script type="text/javascript" src="js/clusterer.js"></script>
<script type="text/javascript" src="js/graph/graphEvent.js"></script>
<script type="text/javascript" src="js/graph/abstractGraph.js"></script>
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