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Configuring the Automatic Vacuum Schedule

PortSIP PBX allows you to configure the time at which the system automatically cleans up temporary and expired files, such as old call recording files. This automated cleanup process helps maintain disk health and system performance.

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Default Vacuum Schedule

  • Starting from PortSIP PBX v16.4.5 and v22.3, the default vacuum time for new installations is 2:00 AM (local server time).

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Customizing the Vacuum Time After an Upgrade

If you upgrade an existing system to v16.4.5 or v22.3.x, you can manually customize the vacuum schedule by following the steps below.

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Step-by-Step Instructions

  1. Open the configuration file with a text editor such as vi, nano

    /var/lib/portsip/pbx/system.ini

  2. Locate the vacuum_rate setting Find the vacuum_rate parameter under the [apigateway] section.

  3. Modify the vacuum schedule Set vacuum_rate using a cron-style expression to define the desired execution time.

    Example: Run the vacuum task daily at 2:00 AM

    vacuum_rate = 0 2 * * *

    Important: Ensure that spaces in the cron expression are preserved exactly as shown (0 2 * * *). Removing spaces or altering the format may prevent the task from running correctly.

  4. Save the file and exit the editor

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Expected Outcome

  • The PortSIP PBX system will automatically vacuum temporary and expired files at the configured time each day.

  • No service restart is required unless otherwise specified in future releases.

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Notes & Best Practices

  • Schedule the vacuum task during off-peak hours to minimize disk I/O impact on active calls and recordings.

  • Ensure sufficient disk permissions and available storage space to avoid cleanup failures.

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