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Posted to users@qpid.apache.org by rhudumula <rh...@salesforce.com.INVALID> on 2021/05/18 18:41:59 UTC
Direct memory in Qpid 7.0.7
Hi Team,
I would like to understand a few things around direct-memory in Qpid 7.0.7
1) What is direct memory used for? only message-payloads and headers? I read
connection data is also held here (ref:
http://qpid.2158936.n2.nabble.com/Java-broker-OOM-due-to-DirectMemory-tc7662358.html#a7662372)
2) Our typical message-size is 500bytes. Heap and direct memory allocations
are 36GB and 13GB respectively. Do you see any problem here? We have around
120 connections with 20 sessions per connection on a Qpid broker.
3) Is there a doc that helps us understand design of the direct-memory
usage? Our heap usage is hitting 100% while the direct-memory usage is under
2%. This is mostly around the creation of new connections/sessions from a
new set of servers.
Thanks,
Rajashekar
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Re: Direct memory in Qpid 7.0.7
Posted by Oleksandr Rudyy <or...@gmail.com>.
Hi Rajashekar,
Please check Qpid Broker-J documentation how memory is used
http://qpid.apache.org/releases/qpid-broker-j-8.0.4/book/Java-Broker-Runtime-Memory.html#Java-Broker-Runtime-Memory
Kind Regards,
Alex
On Tue, 18 May 2021 at 19:42, rhudumula
<rh...@salesforce.com.invalid> wrote:
>
> Hi Team,
>
> I would like to understand a few things around direct-memory in Qpid 7.0.7
> 1) What is direct memory used for? only message-payloads and headers? I read
> connection data is also held here (ref:
> http://qpid.2158936.n2.nabble.com/Java-broker-OOM-due-to-DirectMemory-tc7662358.html#a7662372)
>
> 2) Our typical message-size is 500bytes. Heap and direct memory allocations
> are 36GB and 13GB respectively. Do you see any problem here? We have around
> 120 connections with 20 sessions per connection on a Qpid broker.
>
> 3) Is there a doc that helps us understand design of the direct-memory
> usage? Our heap usage is hitting 100% while the direct-memory usage is under
> 2%. This is mostly around the creation of new connections/sessions from a
> new set of servers.
>
> Thanks,
> Rajashekar
>
>
>
> --
> Sent from: http://qpid.2158936.n2.nabble.com/Apache-Qpid-users-f2158936.html
>
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> To unsubscribe, e-mail: users-unsubscribe@qpid.apache.org
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