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https://issues.apache.org/jira/browse/ARTEMIS-4809?focusedWorklogId=928559&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-928559
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ASF GitHub Bot logged work on ARTEMIS-4809:
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Author: ASF GitHub Bot
Created on: 02/Aug/24 16:20
Start Date: 02/Aug/24 16:20
Worklog Time Spent: 10m
Work Description: jbertram commented on PR #4966:
URL:
https://github.com/apache/activemq-artemis/pull/4966#issuecomment-2265739332
Generally speaking I think this looks good. However, there's a couple of
things I would revisit:
1. The name `intermediate-message-buffer-initial-size`, while technically
accurate, is probably not terribly clear to users. I think something like
`initial-queue-buffer-size` is more clear.
2. The documentation defines this as the " initial number of elements of the
intermediate message reference buffer." Again, this is technically accurate,
but it doesn't give users a clear reason _why_ they might want to configure it.
The docs should make clear that this is tied directly to the number of _bytes_
from the JVM's heap each queue will consume initially. The docs might also
mention the canonical use-case for this (i.e. lots of queues which might remain
empty or have a small number of messages).
Issue Time Tracking
-------------------
Worklog Id: (was: 928559)
Time Spent: 2h 50m (was: 2h 40m)
> Make intermediateMessageReferences initial capacity configurable
> ----------------------------------------------------------------
>
> Key: ARTEMIS-4809
> URL: https://issues.apache.org/jira/browse/ARTEMIS-4809
> Project: ActiveMQ Artemis
> Issue Type: New Feature
> Components: Broker
> Reporter: Josh Byster
> Priority: Minor
> Time Spent: 2h 50m
> Remaining Estimate: 0h
>
> In some setups, there could be a few hundred thousand queues that are created
> due to many consumers that are connecting. However, most of these are empty
> and stay empty for the entire day since there aren't necessarily messages to
> be sent.
> The 8K {{intermediateMessageReferences}} instantiates an 64KB buffer
> ({{Object[]}}). This means we have large allocation and live heap that
> ultimately remains empty for almost the entire day.
> It would be quite nice if we could configure this initial size.
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