How long could a big Confluence instance import take and how do I know if it's stuck?

Question

Hello,

I just wanted to get a good gauge of how long a 56GB Confluence site restoration would take. I looked around and found that sometimes even a 2GB project could take hours and hours and still not be done, due to some sort of bug. I need to know what to look out for if something like this happens.

Regards,

Shirley

Edwin Kyalangalilwa · Accepted Answer

Hi @Shirley He,

What to look out for is whether data is still being written either to the database or to the home directory. I'd also tail the Confluence logs to monitor any error messages.

There is also another restore option if you have a database backup and a home directory backup.

Restoring Data from other Backups

Tobias Anstett (K15t) · Accepted Answer

Hi @Shirley He,

Depending on the data in your site backup it will perform differently. E.g. if it contains a lot of attachments which are streamed to your disk or if everything is database content...

Nevertheless import depends heavily on your memory (Xmx) settings. Thus an import could take sooooooo long or fails/stops if it is to low.

For an export there is a rule of thumb from Atlassian "you need double as much RAM as the export result size" - I would also stick to this for an import to get it working and performing in a reasonable time.

Best, Tobias