What about running backups with a lower priority ? Of course backups are important, but sometimes they may interfere with the actual system doing things, or generate notifications of high cpu or I/O load on the servers.
I found #133 which was closed, but I still don't see the pull to be in the code. Any news on this ?
You should be able to use nice and/or ionice to run the job. Sub-processes will inherit this. This should help control the archiving and packaging processes, but probably won't affect database dump, since it wouldn't affect the database server process.