Understanding JVM Memory, Heap, Garbage Collection and Monitoring the JVM | Tech Primers
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- เผยแพร่เมื่อ 6 ก.พ. 2025
- This video covers Understanding JVM Memory, Heap, Garbage Collection and Monitoring the JVM using JVisual VM.
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Joakim Karud - แนวปฏิบัติและการใช้ชีวิต
Wow informative .....voice is so clear I understood a lot. Thank you Dude....!!!!!!!!!!
very good information, all your videos postings are useful and practical implementations
Did not know about the JVisual VM. Learnt it today. Informative. Thanks.
At 8:32, "Age" was called not primitive, whereas it is a primitive type variable and hence placed in the stack.
exactly what I was wondering. It's int and is primitive.
Same here!!
int is primitive
I love all your tech videos.. short and full of great info
Glad you like them!
Very Great video, Nicely explained the JAVA Memory Model, Thanks for this video ...
Fantastic video! Thanks 👍🏾👍🏾
Simple an clear…. Nice video👍🏻
Excellent Video
Surprisingly confusion started when you showed an example at 7:03
No one gave this sort of example, but it's very confusing as you are not pointing anything while explaining, I found it very hard to follow and lost interest to move further.
Thanks man..very informative and concise..i wish it had closed captions turned on
Thank you. Glad that was useful!
Hi Ajaykumar, This video was very helpful. Thank you.
I have 2 suggestions for this video.
1. Divide this video by adding chapters
2. When you were trying to explain Heap & Stack, I could not follow. I would request you to have cursor movement around it while explaining the flows/diagrams.
Same thoughts here.
No one could really sense where on the screen they were supposed to concentrate.
Can you share video where you are debugging a memory leak issue on prod. we are facing mem leak issue on API running on server , No idea how to start debug it go get the reason.
thank you for these concepts
My understanding might be wrong here. At 7.25 you say the object reference is stored in the heap. But does the object reference gets stored in the heap or is it the object(instance) that gets stored in the heap? Because as far as I know object reference indicates the reference variable and that is stored in stack (again I might be wrong here).
Would like to get your view here
i second with what you said
The Object (Instance) stored in Heap which holds the actual data when in terms of stack the reference where the Instance is stored in heap is store in Stack as part of the JVM process. as you know java is pass by value so it pass the value of the reference where the object is stored in Heap.
Excellent
Hi, this i my first comment and have been following your videos for some time. All videos are quite useful and I like the fact that you keep posting videos on latest trending technologies in the market. I highly appreciate your efforts behind these videos in collecting and well presenting in a compact and nice way. Keep up the good work. Btw, you may want to upload some video related to how class loading works in detail and errors that most programmers run into wrt class loading, conflicts, versioning issues, etc
sure. thanks Vinay. Will do that.
Tech Primers Thanks!
Can you please help me in knowing which will be the best command to get to know about the heap space covered by a process in server
It depends on the type of process. Also you can see what is allocated only at the server level. If you need to see how much heap the application process uses, then you be to connect to the instance for profiling it
@@TechPrimers I have tried to get the heap usage info by gstat command and it works...
Great video🔥
simple yet usefull
Well explained .
Hey great video could you demonstrate memory leak and fix it onna basic level?!!? Thanks in advance
very nice
can you upload a video having how to manage the memory with a real life example. let suppose you are facing some memory issue, or how to manage performance issue. -thanks
The best explanation
where is STACK memory in the components diagram ?
Starting from 9:30, Garbage collection
hi i have a doubt with Tomcat Thread Pool vs Executor thread pool. If tomcat server thread pool is 200 and we set executor thread pool to 10, do we have 210 threads in total?
The Executor is used instead of the Connector's thread pool.
The Connector's maxThreads setting is ignored once the Executor is assigned.
The total number of worker threads handling requests will be 10 (from the Executor), not 210.
Well Explained
Correction: Full GC happens on entire heap space; both young + old generation.
Where are jre and application classes loaded, metspace and permgen respectively ??
Nice! Java 10 - thoughts on JEPs please
Looks like you are from the future... Asking about Java 10... :)
Wrong ... About Heap ... Heap will never contains static data as you said,
This is true.
Method area section was used to store static variables of the class, metadata of the class, etc. Whereas, non-static methods and variables were stored in the heap memory.
Hi could you do a video on low lantency java programming with microservice design pattern? Would be good if you could show a simple example!
hmm, isn't The Java memory model describes "how threads in the Java programming language interact through memory" rather then "Understanding JVM Memory, Heap, Garbage Collection and Monitoring the JVM" ???
I'm surprised...
such great video keep up #Like
thanks Siyed
Sir now java10 in details..
Could you please explain how load balancing is done in production enviroment ?
sure Maithreyi. Will do
Where does STACK resides.... Heap, Non Heap
Make a video on jmeter
sure santosh
Use 1.5x speed.
confusing
Very confusing
Not teaching well
NYC vedio