GeorgePatches
Dabbler
- Joined
- Dec 10, 2019
- Messages
- 39
Just wanted to say that I'm seeing behavior very similar to this with my very similar use case. Make a big file write (larger than my system has RAM for the file) as part of daily backups and when that write finishes it seems to just dump the whole ARC for no reason I can surmise.Meanwhile at Villabajo — things magically dropped over night by 100GB. Never saw anything like this before. Neither with Solaris/OmniOS, nor with freeBSD. The use case is constantly the same: Hourly backups from 3 up to 5 MacOS clients (TimeMachine vis SMB), daily backups from 2 Linux clients (rsync via NFS); daily replication to a remote (vanilla) freeBSD ZFS file server (zfs send via SSH). It's all about scientific data. No DVD-archives, no video editing. And of course: no reboots/service daemon restarts:
Sounds like it's indeed a bug and I'll be reading through the links. It's not hitting our performance noticeably, but it definitely just seems wrong. Our use case is very light on the cache, mostly throw a bunch of data at TrueNAS during nightly backups and read that data back to sync it into AWS.