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| <p class="relNotesText">Apache Traffic Control-1.8.0-incubating has not yet been released! |
| The artifacts and release notes below are drafts for a proposed release of |
| Apache Traffic Control which has not yet occurred.</p> |
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| <h1>Apache Traffic Control 1.8.0-incubating Release Notes</h1> |
| The source code for Traffic Control 1.8.0 is available here: |
| <table><tbody padding="0 15px 0 15px"> |
| <tr> |
| <td><a href="https://dist.apache.org/repos/dist/dev/incubator/trafficcontrol/1.8.0/RC5/incubator-trafficcontrol-1.8.0.tar.gz">incubator-trafficcontrol-1.8.0.tar.gz</a></td> |
| <td padding="10px"><a href="https://dist.apache.org/repos/dist/dev/incubator/trafficcontrol/1.8.0/RC5/incubator-trafficcontrol-1.8.0.tar.gz.md5">MD5</a></td> |
| <td padding="10px"><a href="https://dist.apache.org/repos/dist/dev/incubator/trafficcontrol/1.8.0/RC5/incubator-trafficcontrol-1.8.0.tar.gz.sha1">SHA1</a></td> |
| <td padding="10px"><a href="https://dist.apache.org/repos/dist/dev/incubator/trafficcontrol/1.8.0/RC5/incubator-trafficcontrol-1.8.0.tar.gz.asc">PGP</a></td> |
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| <h2>We're Incubating!</h2> |
| <p class="relNotesText">The Traffic Control project has been accepted into the Apache Incubator, and is |
| thus now Apache Traffic Control (incubating). Beyond simply moving the website, |
| this necessitated a number of changes, including switching to the Apache |
| License. |
| </p> |
| |
| <p class="relNotesText">The 1.8.0-incubating release is Apache Traffic Control's |
| first release under the Apache incubator. This release contains numerous bug |
| fixes in addition to the following: |
| </p> |
| |
| <h3>Traffic Router</h3> |
| <p class="relNotesText">Recommendations based on load testing of HTTPS support: </p> |
| |
| <p class="relNotesText">It is generally recommended to use the G1 garbage collector for JVM |
| applications running on multi core machines. In addition to using the G1 |
| garbage collector, the InitiatingHeapOccupancyPercent was lowered to run |
| garbage collection more frequently. This improved overall throughput for |
| Traffic Router and reduced 'Stop the World' garbage collection. </p> |
| <p class="relNotesText">The following example of /opt/tomcat/bin/setenv.sh that |
| has been tested on a multi core server running under HTTPS load test requests. |
| Note that setting the min and max heap settings in setenv.sh will override init |
| scripts in /etc/init.d/tomcat.</p> |
| |
| <pre><code> |
| #! /bin/sh |
| export CATALINA_OPTS="$CATALINA_OPTS -server" |
| export CATALINA_OPTS="$CATALINA_OPTS -Xms2g -Xmx2g" |
| export CATALINA_OPTS="$CATALINA_OPTS -XX:+UseG1GC" |
| export CATALINA_OPTS="$CATALINA_OPTS -XX:+UnlockExperimentalVMOptions" |
| export CATALINA_OPTS="$CATALINA_OPTS -XX:InitiatingHeapOccupancyPercent=30" |
| </code></pre> |
| |
| <h3>Traffic Stats</h3> |
| <ul> |
| <li>As of 1.8 Traffic Stats now requires InfluxDB 1.0 or greater. For support of InfluxDb version < 1.0 please use Traffic Stats 1.7.</li> |
| <li>Traffic Stats now uses its config file to determine which influxdb urls to use. This allows a user to run a single instance of influxdb, an enterprise clustered solution, or a HA solution using influxdb-relay (https://github.com/influxdata/influxdb-relay).</li> |
| |
| <li>It is recommended to use the traffic_stats.cfg file provided by the TS 1.8 RPM. This version of the config file contains the new InfluxUrls array and there were some unnecessary variables that were removed.</li> |
| </ul> |
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| Older, non-ASF releases can be found <a href="http://traffic-control-cdn.net/downloads/index.html">here</a>. |
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