Jeyzer blog

Article - Feb 2024

Virtual Thread monitoring guide

Check out our Virtual Thread monitoring guide article.

Following the virtual thread recording and analysis support in Jeyzer, the need for a monitoring guide became obvious to close our virtual thread journey.
This guide is quite exhaustive and contains recommendations for the virtual thread adoption.
Highly recommended. 

Releases - Jan 2024

Jeyzer 3.2 - Virtual Thread recording and Zabbix integration

Jeyzer 3.2 is now available in the download section.

  • Jeyzer can now record Java virtual threads
    Introduced in Java 21, virtual threads are now a Java masterpiece, bringing high end performance and simplifying the asynchronous programming.
    After introducing the virtual thread analysis, Jeyzer is now able to record it using a Java agent (aka Jeyzer Recorder agent). This is truly a better alternative to the Java jcmd command line tool and it brings also the advantage to capture along side standard figures (CPU, memory, GC).
  • Active monitoring : Zabbix integration
    Jeyzer Monitor can now export detected events to Zabbix in order to send alerts or to display it in Grafana.
    This is achieved with the combination of a Jeyzer Publisher and a Zabbix sender client.
  • Jeyzer in numbers :
    Jeyzer now includes 120 technical shared profiles : from Apache Commons,  MySQL, Log4j… to Hadoop, JBoss, Tomcat, AppDynamics…
    Online Analysis now performs 187 checks on your submitted runtime recordings.
    And Jeyzer 3.2 still comes up with 98 detection rules to use directly or customize.
Releases - Oct 2023

Jeyzer 3.1 - Virtual Thread analysis

Jeyzer 3.1 is now available in the download section.

  • Jeyzer can now analyze Java virtual threads
    Introduced in Java 21, virtual threads are now a Java masterpiece, bringing high end performance and simplifying the asynchronous programming.
    In the JZR reports, you will visualize easily the grouped unmounted virtual threads and the individual running virtual threads.
    Through the Jeyzer Monitor, you may trigger events such as virtual thread max threshold or “leak” detection.
    As of today, the Java Jcmd tool is mandatory to capture virtual threads : the Jeyzer Recorder is embedding a periodic one for Windows.
    At last, if you wish to play around with virtual threads, the Jeyzer Demos provide a set of interesting tests : massive creation, IOs, locks…
  • Jeyzer in numbers :
    Jeyzer now includes 104 technical shared profiles : from Apache Commons,  MySQL, Log4j… to Hadoop, JBoss, Tomcat…
    Online Analysis now performs 167 checks on your submitted runtime recordings.
    And Jeyzer 3.1 comes up with 98 detection rules to use directly or customize.
Releases - May 2023

Jeyzer 3.0 - Open Source release

Jeyzer 3.0 is now available in the download section.

  • Jeyzer is now entirely open source
    The Jeyzer Monitor license is not required anymore starting from version 3.0.
    Jeyzer release cycle will now be biannual.
  • Jeyzer in numbers :
    Jeyzer now includes 99 technical shared profiles : from Apache Commons,  MySQL, Log4j… to Hadoop, JBoss, Tomcat…
    Online Analysis now performs 161 checks on your submitted runtime recordings.
    And Jeyzer 3.0 comes up with 93 detection rules to use directly or customize.
Releases - Aug 2022

Jeyzer 2.7 release

Jeyzer 2.7 is now available in the download section.

  • NEW : Java 17 LTS support
    Jeyzer is certified on Java 17. It includes The Jeyzer Analyzer, Jeyzer Recorder and Jeyzer Monitor.
    Jeyzer therefore covers the incident analysis and monitoring of Java server applications running from Java 7 to Java 17 !!
  • Maintenance release
    The JZR report has been enhanced with minor improvements on the JVM flags, Session Details, Top Stacks and Process Card sheets.
    It contains also bug fixes, including ones related to the JFR analysis.
 
Releases - Oct 2021

Jeyzer 2.6 release

Jeyzer 2.6 is now available in the download section.

  • NEW : Group sequence sheet
    Your application is using a large set of active threads ? And this is painful to browse in a JZR report (even if Jeyzer already filters the inactive threads) ?

    The JZR report provides you with a new view which groups the identical thread stacks to facilitate strongly the analysis.
    1000 identical active threads will be typically displayed as 1 line in the JZR report !!
  • NEW : Profile redirection
    The Jeyzer Web Analyzer is detecting the right analysis profile to use, thanks to the new profile redirection feature.
    For example, analyze any JFR or JZR recording of Active MQ : Jeyzer will scan it and select automatically the AMQ analysis profile.
    That way, you get now transparently the best JZR report that suits to your application.
    Note : the Jeyzer Online Analyzer is also supporting this great feature for a few standard master profiles (which include AMQ).
  • Java Flight Recorder support : the Jeyzer Analyzer accepts now any zipped JFR recording file.
 
Releases - Jun 2021

Jeyzer 2.5 release

Jeyzer 2.5 is now available in the download section.

  • The Java Flight Recorder support is extended with the JVM flags analysis
    and the date display in any time zone (opposed to JMC which does only UTC display)
  • Time zone selection : JZR reports and outputs can now be aligned on any time zone
  • JVM flags are now recorded , analyzed and subject to monitoring rules
 
Releases - Mar 2021

Jeyzer 2.4 release

Jeyzer 2.4 is now available in the download section.

  • A major step is reached with the Java Flight Recorder support : Jeyzer can now analyze JFR recordings and issue JZR reports out of it.
  • The Jeyzer Recorder Agent integration has been extremely simplified : add the -javaagent[…] to your Java command line and it is ready !
 
Article - Feb 2021

Jeyzer and Java Flight Recorder

We get often the question : “What is the difference between Jeyzer and Java Flight Recorder ?”
This led us to put the light on the 2 solutions and compare it in this article.
The study covers the black box recording and its analysis where the JDK Mission Control is also involved.
Releases - Feb 2021

Jeyzer 2.3 release

Jeyzer 2.3 is now available in the download section.
It is a minor version, strongly recommended for any application running under Java 11.
 
Core - Jan 2021

Java Modules support

Java modules were introduced in Java 9.

The JZR report of your Java application exposes now its loaded modules and their module graph dependency.
Jeyzer Monitor introduces a new set of monitoring rules to check the Java module names and versions : still time to detect any snapshot or beta version of a Java module in your production application.
Those module checks are also available in the JZR report, along with the other detected events.

The Jeyzer Recorder agent is required to capture the Java module information from the target application.

Releases - Jan 2021

Jeyzer 2.2 release

Jeyzer 2.2 is now available in the download section. Main changes are :
  • Java modules full support
    Jeyzer Recorder, Analyzer and Monitor are now covering as well the Java modules.
  • The Jeyzer Publisher and Jeyzer Annotations libraries are now available as Java modules.
    Those remain JDK 7 and 8 compatible.
Devops - Nov 2020

Jira support

Jeyzer 2.1 integrates with Jira Cloud.

Whenever a critical incident happens in your production or QA environment on a Java server, Jeyzer Monitor will automatically create a Jira ticket in the right project and attach all the details of the incident, including the JZR report.
If the Jira ticket exists for such incident, Jeyzer Monitor will update it with a comment and attach the JZR report if required.

Advantages :
The Jeyzer integration with Jira brings a better and strong reactivity.
Your teams will start processing the incident directly from Jira.
Also administrative work time is saved, removing those questions : which project? who is responsible?…
At last, benefit right away from the Jira notification mechanism : ticket could go directly to the right R&D team for example.

Jira publisher tech documentation

Releases - Nov 2020

Jeyzer 2.1 release

Jeyzer 2.1 is now available in the download section. Main changes are :
  • Jeyzer Monitor : JIRA Cloud integration through the JIRA REST v3 API
    Jeyzer Monitor will create or update JIRA items for the important encountered monitoring events.
  • Jeyzer profiles : monitoring rules do now provide an optional ticket field to store any ticket system reference (like a JIRA ticket id)
  • Features demo theme is now aircraft related
Article - Sep 2020

The incident management challenge

In production, the incident management on server applications leads often to failure : it can take days to get the root cause.

In this path driven article, we go through the main six reasons of this failure and see how Jeyzer can strongly help.
Based on your current position, choose your path :