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Posted to notifications@james.apache.org by GitBox <gi...@apache.org> on 2020/12/31 08:58:05 UTC
[GitHub] [james-project] chibenwa commented on a change in pull request #285: JAMES-3487 Java property to control MimeMessageInputStreamSource thre…
chibenwa commented on a change in pull request #285:
URL: https://github.com/apache/james-project/pull/285#discussion_r550433315
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File path: docs/modules/servers/pages/distributed/configure/index.adoc
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@@ -59,4 +59,27 @@ By omitting these files, no extra behaviour is added.
** xref:distributed/configure/spam.adoc[This page] documents Anti-Spam setup with SpamAssassin.
** xref:distributed/configure/remote-delivery-error-handling.adoc[This page] proposes a simple strategy for RemoteDelivery error handling.
** xref:distributed/configure/collecting-contacts.adoc[This page] documents contact collection
-** xref:distributed/configure/collecting-events.adoc[This page] documents event collection
\ No newline at end of file
+** xref:distributed/configure/collecting-events.adoc[This page] documents event collection
+
+== System properties
+
+Some tuning can be done via system properties. This includes:
+
+.System properties
+|===
+| Property name | explanation
+
+| james.message.memory.threshold
+| (Optional). String (size, integer + size units, example: `12 KIB`, supported units are bytes KIB MIB GIB TIB). Defaults to 100KIB.
+This governs the threshold MimeMessageInputStreamSource relies on for storing MimeMessage content on disk.
+Below, data is stored in memory. Above data is stored on disk.
+Lower values will lead to longer processing time but will minimize heap memory usage. Modern SSD hardware
+should however support a high throughput. Higher values will lead to faster single mail processing at the cost
+of higher heap usage.
+
+
+| james.message.usememorycopy
+|Optional. Boolean. Defaults to false. Recommended value is true.
Review comment:
that a typo. Of course MUST be false
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