mds, mds_stores, and lsd taking up WAY too much memory

[PeterB]

Hi all,

On my Mac Pro (2012) running Mojave, all of a sudden I've noticed that I'm getting slowdowns and the major culprits are the three processes above, with one of them taking > 20 GB of memory. I end up force quitting these, the problem then goes away, but later recurs.

So far, I've tried running Onyx to get it to rebuild the launch directory and Spotlight index, but this hasn't solved it through a reboot.

Any ideas? I'm wondering if one of the recent system updates is to blame.

TiA