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Since installing macOS 10.12 I noticed a flood of messages from deleted in the logs. I haven't been able to find any information about this daemon. Could anyone enlighten me what this does?
deleted is the process for CacheDelete, which is used to purge caches on disk. Looking in /System/Library/CacheDelete/ you can see what services are registered as a client.
For me, this problem was being caused by problems with iStat Menus on macOS Sierra 10.12.0. There seems to be a bug which causes issues with the deleted process. Once I uninstalled iStat Menus the problem ceased.