Christian Posta created AMQ-5603:
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Summary: Consider preallocation of journal files in batch
increments
Key: AMQ-5603
URL: https://issues.apache.org/jira/browse/AMQ-5603
Project: ActiveMQ
Issue Type: New Feature
Components: Message Store
Reporter: Christian Posta
Priority: Minor
Right now (as of ActiveMQ 5.12 release) we preallocate journal files, but the
only scope is for entire journal file. The [potential] issue with that is if
user configures large journal file sizes, we can end up stalling writes during
log rotation because of the allocation process. There are two ways to do the
allocation, configurable to do it in userspace, or defer to kernel space, but
nevertheless it would be good to avoid this issue altogether by preallocating
in small batch sizes regardless of the journal max file size.
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