Hi Pranjul,
Currently, Flink only have the metrics shown in taskmanager UI to tell the
capacity of JMV overhead. However, Flink cannot detect how much overhead memory
has been occupied as those memory footprints might be asked by the third-party
library via OS malloc directly instead of via JVM.
Some tools provided by memory allocator such jemalloc or tcmalloc, could help
find how much the memory usage via OS malloc. Even though, there still exists
some memory used by mmap or on local stack, which is not so easy to detect.
Best
Yun Tang
From: Guowei Ma
Sent: Friday, June 25, 2021 15:22
To: Pranjul Ahuja
Cc: user
Subject: Re: Metric for JVM Overhaed
Hi Pranjul
There are already some system metrics that track the jvm
status(CPU/Memory/Threads/GC). You could find them in the [1]
[1]https://ci.apache.org/projects/flink/flink-docs-release-1.13/docs/ops/metrics/#system-metrics
Best,
Guowei
On Fri, Jun 25, 2021 at 2:33 PM Pranjul Ahuja
mailto:ahuja0...@gmail.com>> wrote:
Hi,
Is there any metric to track the task manager JVM overhead? Or is it the case
that it is already included in the metric Status.JVM.Memory.NonHeap?
Thanks,
Pranjul
