GreenArrow is able to processes messages internally in batches in the ram-queue for faster performance.
When message batching is enabled, all of the reports that show the
number of “messages” in the ram-queue (such as
will report the number of message batches instead of messages (although
the label will still say “messages”).
Message batching applies to:
- Email injected through SimpleMH.
- Email injected through an authenticated SMTP connection (either SMTP-AUTH or IP-based authentication).
Message batching does not apply to:
- Email injected through an un-authenticated SMTP connection that does not use SimpleMH.
- Email injected using the
qmail-injectcommands that does not use SimpleMH.
- Email that is internally generated by GreenArrow.
Batching is controlled with the following settings:
Maximum number of messages allowed in a single batch file.
Maximum time in seconds to wait for messages before closing a batch. This is needed because messages do not arrive in batches but need to be collected together into batches.
Maximum bytes to allow in a message batch.
The default is automatically calculated from the
queue.ram.ramdisk.messagesto prevent exhausting the storage in the ramdisk queue. We strongly recommend using this default. You may enter the text
defaultto get this default value.
These configuration files are automatically re-read each second.
To enable batching, for example, run:
echo 10 > /var/hvmail/control/opt.simplemh.batch.max_messages echo 2 > /var/hvmail/control/opt.simplemh.batch.max_time echo default > /var/hvmail/control/opt.simplemh.batch.max_bytes
To disable message batching, run:
echo 1 > /var/hvmail/control/opt.simplemh.batch.max_messages