Also asked on: https://unix.stackexchange.com/questions/676245/openbsd-core-dump-and-var-size
I'm trying to figure out my partitioning which leads to https://man.openbsd.org/disklabel#AUTOMATIC_DISK_ALLOCATION which says: "/var 13% of disk. 80M – 2x size of crash dump" But how do I know the size of crash dump? I can't find it neither in OpenBSD's installation guide, nor in https://man.openbsd.org/savecore.8 nor in the internet at large. The only clue I've found is in http://man.openbsd.org/man8/crash.8 "the system dumps the contents of physical memory onto a mass storage peripheral device" "physical memory". So do rules of estimating swap partition size apply here as well? May I ask for some actual numbers/functions/tables? Perhaps similar to the table in https://askubuntu.com/a/49138 answer on swap size: Amount of RAM Swap space Swap space in the system if allowing for hibernation -------------- ---------- --------------------------- ≤ 2 GB 2x RAM 3x RAM > 2 GB – 8 GB = RAM 2x RAM > 8 GB – 64 GB ≥ 4 GB 1.5x RAM > 64 GB ≥ 4 GB Hibernation not recommended I am an ordinary user who is not going to test OpenBSD for crashiness but to just run it the more stable the better but for the possibility of a crash be able to report it.
