Any way to configure fsck_hfs to use more memory to speed up verification of Time Capsule images?
As far as I know, there's no configuration file or GUI part of the setup that you can use to force Time Machine to let fsck_hfs use more than the default amount of RAM for caching.
There's however a kind of &quot;workaround&quot; for making this work anyway. You replace /sbin/fsck_hfs with a new program (script or binary) that checks if it is run by Time Machine, and if so adds &quot;-c 8G&quot; (or whatever you want) to the command line parameters given to fsck_hfs. If it not run by Time Machine, just run fsck_hfs with the given parameters.
If you're on a recent macOS, you'll need to disable SIP in order to replace fsck_hfs.