I have a Java app running on Tomcat, and I would like to monitor counters using Windows Performance Monitor. Is this possible using a JMX adapter for the Java MBeans or by some other means?
The following tutorial might be of use:
http://www.developer.com/java/ent/article.php/3087741/Hooking-to-PerfMon-from-Java.htm
It shows how a Java application defines a custom counter that can be monitored in Perfmon. It basically boils down to using an extension DLL to the performance monitor and communicating with that via a memory mapped file. You could then hook your JMX counters into a similar mechanism so that they can be monitored from Perfmon.
Since you tagged this with JMX and MBeans, I assume your counters are accessible from a Java MBean. If so you could use jconsole, provided with the Java SDK, to monitor the counters. Once you find your MBean in the MBeans tab, double click on the value and it will draw a nice line graph for easy monitoring.
See JConsole Guide for more info.
This seems to be exactly what you're looking for, but it's not free:
http://www.adventnet.com/products/snmpadaptor/faqs/general.html
If you want to do this programatically, you can create a JMXConnection to the machine, then accessing the MBeans from there. We did this ourselves for a function test that involved keeping track of the number of threads in the application, which there's a counter for that you can access through JMX. If you want nice graphs and things like that I suggest using JConsole, as mentioned above. There's also a program called JProfiler that works like JConsole on steroids, basically. There's a free trial so you can try it out.
This article outlines how to access Windows PerfMon stats from Java and expose them as MBean attributes through JMX.
Related
I need to monitor memory consumption, class loading, thread details specific to each web application deployed in a tomcat server. In my use case, there will be a number of WAR files deployed in a single tomcat instance.
I know i can enable JMX to monitor tomcat and can get few details about the applications deployed in it. But this will not give any information about memory consumption and other details specific to a each web application.
We can enable JMX for a jar file with the below configurations.
java -Dcom.sun.management.jmxremote.port=3333 \
-Dcom.sun.management.jmxremote.ssl=false \
-Dcom.sun.management.jmxremote.authenticate=false \
YourJavaApp
Similar to this, is there any way to enable JMX for a web application. Again, what I'm looking is to get details like memory consumption, class-loading, thread details separately for each web application.
Thanks,
nks
JMX only provides high level metrics, you may want to use an APM tool to get deeper into your code and provide far better visibility. The three leading products for this are AppDynamics, Dynatrace, and New Relic. I work for AppDynamics if you have questions, I believe we have the best solution on the market today. We also monitor JMX and do much deeper code analysis, and transaction stitching.
I am trying to write a small script that will help me automate some of my IT tasks regarding to VLAN management.
I do not want to log-in to my switch via command-line - I want to send commands to it and get response (over the NET).
Are there any alternatives? I have started to search the web but so far I did not found anything.
I know SNMP is an option to gain info but I want to check other alternatives
thanks.
You can try Netconf Configuration Protocol, it is RPC-like management protocol which is supported by Cisco and many other vendors.
SNMP is the only widely and commonly used option here.
You can use WMI to manage Windows-based infrastructure.
There is also legacy SYSLOG protocol (RFC3164) which is UDP based.
For traffic monitoring and billing purposes there are NetFlow,
sFlow, jFlow, IPFIX and RADIUS protocols.
There are some other protocols but mostly proprietary.
So I'd suggest using SNMP which is nowadays a de-facto standard in network monitoring domain.
You might look at Expect as a scripting language solution. It is commonly used to do exactly what you are needing:
log into device (with result cases)
execute commands
save config
logout
As you build out a script library, tasks become simplified as you could do things like run scripts with parameters and have Expect do all the detail work.
See the wikipedia article for an overview.
I have also used SNMP for this kind of thing but the functionality is different because you are using an SNMP read-write privilege to upload new parts or complete configs, saving the running config to flash and/or saving the config off-device.
Try NETCONF+YANG protocol because it is currently the best option for network device configuration. More about SNMP alternatives:
https://bestmonitoringtools.com/top-snmp-alternatives-because-snmp-is-dying/
I am using grinder in order to generate reports for the performance tests for my application. But I noticed that it does not generate any report on CPU and memory usage. On further investigation, I found that Grinder does not provide this information. Now, my question is, is there any tool that can be hooked up with grinder, to record the CPU and memory usage details?
As you have discovered, this is not supported directly in The Grinder itself. You will need to use a collection of tools to accomplish this.
I use a combination of Quickstatd, Graphite, and Grinder to Graphite to get all my results in the same place where I can see them. If you need to support Windows, you can probably use collectd (with ssc-serv and the Graphite plugin) instead of Quickstatd, which is based on bash scripts.
You can also pull in server side metrics (like DB lookups per second, etc.) with tools like jmxtrans, statsd, and metrics.
Having all that information in the same place is really powerful, and can give you some good insights.
If you grind a Java server, you can get data via JMX from OperatingSystemMXBean and MemoryMXBean.
Then add the data to a Grinder user Statistic and the data will end up in the -data.log
grinder.statistics.registerDataLogExpression("Load", "userDouble0")
..
grinder.statistics.forCurrentTest.setDouble("userDouble0", systemLoadAverage)
the -data.log can directly be fed into Gnuplot
gnuplot> plot 'client-0-data.log' using 2:7 title "System Load"
I'm using FUSE ESB and i wondering, is there any possibilities to connect some JMX monitor ?
I have connectec JMX monitor to normal tomcat, but i think that it is good idea, to have controll over serwer load, where i have FUSE ESB instance.
Do you have any experience with it?
I will be greatefull for any help
You may want to read this QA as well where its discussing monitoring of SMX / FuseESB
Administration and Monitoring of Apache-Camel routes in ServiceMix
But rule of thumb is that SMX / Fuse ESB is running on a JVM and offers JMX management capabilities, and any standard JMX compliant tooling can access these information.
For example with Camel we have an extensive number of JMX mbeans, you can gain details about your Camel applications, such as performance statistics, control lifecycle of Camel routes, consumers, etc. And see thread pool utilization, and so forth.
FuseSource offers documentation about Fuse ESB. For example there is some details about configuring JMX here: http://fusesource.com/docs/esb/4.4.1/esb_runtime/ESBRuntimeJMXConfig.html
yep, you can use JMX (jconsole, visualVM, etc)...its enabled by default (see the /bin/servicemix shell script and /etc/system.properties for config)
see these links for more details (though they are a bit dated)...
https://cwiki.apache.org/confluence/display/SMX4/Remote+JMX+connection
http://servicemix.apache.org/docs/4.4.x/users-guide/jmx.html
Is there an application that is capable of monitoring AND logging information (to file) about another process (in particular IIS aspnet_wp.exe) like (in periods of time):
- memory usage of process
- cpu usage
Or maybe there is another way to monitor IIS process?
Thanks Pawel
You can check Process Monitor from Microsoft.
Process Monitor is an advanced
monitoring tool for Windows that shows
real-time file system, Registry and
process/thread activity. It combines
the features of two legacy
Sysinternals utilities, Filemon and
Regmon, and adds an extensive list of
enhancements including rich and
non-destructive filtering,
comprehensive event properties such
session IDs and user names, reliable
process information, full thread
stacks with integrated symbol support
for each operation, simultaneous
logging to a file, and much more.
One choice would be Process explorer http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx
You might want to look at the ANTS Performance and Memory Profilers from Red Gate. I'm using their memory profiler to track down some memory issues as I write this.
Pretty much any monitoring system or framework that allows custom checks is capable of this.
You write your check and just put an extra line in it to post/print/put something to a file of your choice.
I for example use sensu for which I wright custom checks in ruby.
So I can easily do something like
if %x[{ping]}
ok
%x[{ print ‘all is well’ > syslog]}
end
and similar to that you can do for most other monitoring systems like Nagios etc.