signal: killed

Magnus Box needs RAM to run. The main cause for this is to hold deduplication indexes; therefore the amount of RAM used is proportional to the size of the Storage Vault.

You might see these error messages:

  • runtime: VirtualAlloc of 1048576 bytes failed with errno=1455 on Windows
  • 0x5AF ERROR_COMMITMENT_LIMIT: The paging file is too small for this operation to complete. on Windows
  • fatal error: out of memory on all platforms

On Linux, when the system is out of memory (OOM), the kernel "OOM Killer" subsystem will immediately terminate a process of its choosing, to free up memory. If you see an error message like signal: killed in Magnus Box on Linux, this means the process was terminated by a user or a subsystem, that might possibly be the OOM Killer. You can check for this in dmesg or kern.log.

You can reduce Magnus Box Backup's RAM usage by trying to limit how much data is in each Storage Vault. For instance, instead of having multiple devices backing up into a single Storage Vault, create multiple Storage Vaults for each device. This will reduce the deduplication efficiency, but it will also reduce the necessary memory usage.

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