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Posted to user@flink.apache.org by John Tipper <jo...@hotmail.com> on 2022/07/20 16:52:53 UTC

What do columns for TM memory usage in Flink UI Console mean?

Hi all,

I can't find mention of what the columns mean for the "Outside JVM Memory' for the Task Manager in the Flink console.

I have:


                  Count             Used        Capacity
Direct            4,203       227 MB      227MB
Mapped            0           0 B               0 B

What is the unit of measure for "Count"?

Re: What do columns for TM memory usage in Flink UI Console mean?

Posted by Weihua Hu <hu...@gmail.com>.
Hi, John

This just shows how many direct buffers are allocated through
'Bytebuffer.allocateDirect'.
And the Used will equals Capacity because we can not get the real usage of
DirectBuffer.


Best,
Weihua


On Thu, Jul 21, 2022 at 12:54 AM John Tipper <jo...@hotmail.com>
wrote:

> Sorry, pressed send too early.
>
> What is the unit of measure for "count" and does this tell me I have too
> little Direct Memory and if so, what do I do to specifically increase this
> number?
>
> Many thanks,
>
> John
> ------------------------------
> *From:* John Tipper
> *Sent:* 20 July 2022 17:52
> *To:* user@flink.apache.org <us...@flink.apache.org>
> *Subject:* What do columns for TM memory usage in Flink UI Console mean?
>
> Hi all,
>
> I can't find mention of what the columns mean for the "Outside JVM Memory'
> for the Task Manager in the Flink console.
>
> I have:
>
>
> Count Used Capacity
> Direct 4,203 227 MB 227MB
> Mapped 0 0 B 0 B
>
>
> What is the unit of measure for "Count"?
>
>
>

Re: What do columns for TM memory usage in Flink UI Console mean?

Posted by John Tipper <jo...@hotmail.com>.
Sorry, pressed send too early.

What is the unit of measure for "count" and does this tell me I have too little Direct Memory and if so, what do I do to specifically increase this number?

Many thanks,

John
________________________________
From: John Tipper
Sent: 20 July 2022 17:52
To: user@flink.apache.org <us...@flink.apache.org>
Subject: What do columns for TM memory usage in Flink UI Console mean?

Hi all,

I can't find mention of what the columns mean for the "Outside JVM Memory' for the Task Manager in the Flink console.

I have:


                  Count             Used        Capacity
Direct            4,203       227 MB      227MB
Mapped            0           0 B               0 B

What is the unit of measure for "Count"?