in JMeter Html reports, the Perfmon metrics are not included. how to add the CPU, Memory, Network and Disk graphs to those Apache JMeter Dashboard?
There is no each "switch" to add those, I can think of the following workaround:
Fetch Individual metrics using i.e. TCP Sampler from the PerfMon Server Agent
Store them into Sample Variables
Plot the variables on the custom charts as it's described in Generating customs graphs over time JMeter user manual entry
Related
Can I use only Dynatrace for Load testing/Soak Testing/Capacity Testing etc. in place pf Apache JMeter (or other Testing tools)?
I can see load testing reports in Dynatrace but is Dynatrace alternative to Apache JMeter (or other JMeter alike testing tools)?
Dynatrace is an APM tool, it will not create any load but it can be used for collecting various metrics from the system under test like CPU, RAM, Network, Disk, Swap usage, HTTP calls, database calls, application-specific metrics, etc.
JMeter is the tool which generates the load by simulating behaviour of real user, but it doesn't collect any metrics from the system under test (unless you use a special plugin like JMeter PerfMon Plugin), it just sends requests, waits for response and measures time in-between as well as other metrics like connect time and latency, after that it calculates average response times and percentiles so you can correlate increasing load (number of active threads - virtual users) with the changing response time or errors per second or transactions per second
So:
JMeter (or other load testing tool) is used for generating the load
Dynatrace (or other APM tool) is used for monitoring the application while it is under the load to figure out the root cause of the perf
I'd few ques on technical details of JMeter mostly pertaining to distributed setup vs independent JMeter engines (since JMeter controller can become a bottleneck in case of several JMeter load generators). Would be great if anybody can help with the understanding here -
How is JMeter distributed setup orchestrated by JMeter controller (i.e. called master or client)? Can we use the same logic to synchronize test among independent JMeter engines (independent mode)?
Is there a way to pool connections across vUsers?
Function of ASYNC_QUEUE in backend listener and it's expected side-effects in independent mode (mentioned above), what happens when queue is full?
Does/Is there a way for JMeter to execute javascript/act as headless browser?
How does DNS resolution happen for JMeter? Does it resolve for each vuser?
Your "question" looks like a compilation of interview questions rather than something connected with your single current concern and I don't think it's a proper place/way to ask it, I believe it should be: one post - one question.
Whatever
How is JMeter distributed setup orchestrated by JMeter controller - JMeter master sends .jmx script to slaves and collects results from them. Theoretically you can implement your own mechanism for delivering the test plan and eventual dependencies to the individual JMeter engines and running the test at the same time. Then you will need to collect the .jtl results files from the engines and combine it into a single one.
Is there a way to pool connections across vUsers? - JMeter does it internally
When the queue is full no more new sample results will be taken for processing by the backend listener so the results won't be "realtime" anymore, you will see the new results as free slots will be appearing in the queue
For JMeter per-se - no, AJAX calls can be simulated using Parallel Controller, for client-side performance testing, JavaScript execution profiling and rendering speed measurement you will need to use a read browser, no matter normal or headless, there is WebDriver Sampler plugin providing JMeter integration with Selenium
DNS resolution is dependent on underlying OS and/or JVM DNS resolution implementation, there is DNS Cache Manager which enables overriding hosts entries and using custom DNS resolver so each thread looks up the IP address on its own
I have recorded script through Blaze meter and tried executing thru jmeter after adding com.sun.faces and bttoken. I have tried adding sEntry but unfortunately I didn't find the key.
Issue: It is not performing refresh report activity because I was monitoring in the backed sessions.
Looking into BI4 Web Intelligence Performance Test with JMeter article it should be strEntry and the relevant Regular Expression Extractor configuration would be something like
Actually you can use another approach to recording JMeter tests which can export recorded scripts in "SmartJMX" mode with automatic detection and correlation of the dynamic data, it might help you to come up with the properly correlated version of the load test with the minimal efforts. Check out How to Cut Your JMeter Scripting Time by 80% article for more details.
If you need further help on manual correlation consider including previous sampler response and the next request details into your question
I am looking to monitor live user responses through jmeter. Can the backend listener in jmeter used to record live users(end users)? I am not talking about virtual users that we set up in jmeter. But the real end users.How can this be achieved?
Editing to add more details:
Our requirement is to monitor the real users, in 2-3 geographical locations, all through out the business hours..say from 8 to 5.
For this purpose, do you think, I need to have a dedicated machine with jmeter, grafana and influxdb for monitoring alone? I have other testing going on using jmeter and I don't want to use the same machine to do both monitoring and testing. DO you think this is achievable by jmeter? ANy suggestions?
you can use the following tools in combination to achieve live monitoring:
JMeter backend Listener - to send results to influxDB
influxdb - store the results sent by backend listener
grafana - run continuous queries for metrics and plot graphs like average response times etc.
Follow the steps mentioned here:
http://jmeter.apache.org/usermanual/realtime-results.html - First Option
https://www.linkedin.com/pulse/jmeter-live-performance-monitoring-dashboard-grafana-influxdb-sarker
http://www.testautomationguru.com/jmeter-real-time-results-influxdb-grafana/
http://techblogsearch.com/a/live-performance-result-monitoring-with-jmeter-grafana-influxdb.html
We use to perform general production app (here- Scada-LTS) monitoring by javamelody. But this will give You general statistics. For per user monitoring it seems You should use log4j + ELK or other simpler syslog analyzing tool.
Jmeter should be used rather for test environment for stress tests.
How accurate are the results of Perfmon (Server health Performance) when compared to Windows Performance Monitor. Are they reliable?
I believe they are
Moreover, you can configure Windows Performance Monitor to store "interesting" counters in CSV format and use JMeter PerfMon TAIL command to read and plot the values
See How to Monitor Your Server Health & Performance During a JMeter Load Test
for more information on using JMeter PerfMon plugin
They are exactly the same and comparable with each other. Type perfmon from the run command, it will open Windows Performance Monitor.
The jmeter agent that collect metrics is right. But I want to say that the network IO that jmeter agent collect includes loopback IO, whose result is same as ifstat -l shows rather than ifstat.