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Manual

'Queueing Export' export step takes a long time

Thomas Walker

Thomas Walker Last update: Jul 30, 2018

Problem

When exporting, the 'Queueing Export' step hangs for a long time:

Explanation

By default, Scroll Word Exporter can only perform 4 exports at the same time. Your export is queued because more than 4 exports are being executed at the same time.

There is a maximum of 4 parallel exports because Scroll Word Exporter uses a separate pool of worker threads that handle export requests – and by default, the pool contains 4 threads.

Solution

Confluence administrators can configure the size of this pool by setting a custom Java System Property in the Confluence startup scripts.

Please note

Please note that increasing this number may have a negative impact on your overall Confluence performance.

There's no rule of thumb for the ideal number of threads. Please always test the performance of your Confluence system after any change in the number of threads.

The CPU time is limited and the more export threads you configure the less CPU time is available for other threads, for example the web worker threads that handle the Confluence web requests when opening a page.

Set the custom Java property

Set this property: com.k15t.scroll.scroll-office.export-worker-count

Example

-Dcom.k15t.scroll.scroll-office.export-worker-count=8

Don't forget to restart Confluence after setting the system property.

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