On 02/09/2025 19:19, Mark Millard wrote:
On Aug 31, 2025, at 12:01, Graham Perrin <[email protected]> wrote:
…
The notes here are about the following sequence of 4 commands:
pkg install -Fy firefox gitup htop hw-probe kde lsblk lynx nano pciutils
plasma6-sddm-kcm roxterm sddm stressdisk uclcmd usbutils
virtualbox-ose-additions xfce xorg
pkg install -Uy firefox gitup htop hw-probe kde lsblk lynx nano pciutils
plasma6-sddm-kcm roxterm sddm stressdisk uclcmd usbutils
virtualbox-ose-additions xfce xorg
pkg upgrade -fFqy
pkg upgrade -fUy
In a 14.3-Stable amd64 UFS context the above command sequence:
1) Will probably OOM on a system with 1 GiByte of RAM but no swap space,
even for the first install command.
2) The sequence of 4 commands used (RAM+SWAP):
1024 MiBytes + 2312 MiBytes (observed maximum)
(So between 3 and 4 GiBytes of RAM+SWAP overall.)
3) So will OOM on a system with 2 GiByte of RAM but no swap space,
overall.
…
Here, with 3 G, fast storage, and swap off: UFS and ZFS seemed much the
same.
RELEASE, quarterly.
UFS (dmesg: 2928 MB avail memory)
=================================
Fourth command (pkg upgrade -fUy).
First run failed. vm.pageout_oom_seq=120
Second and third runs (not consecutive to the first): success. For the
third run, I reduced vm.pageout_oom_seq to its default (12).
ZFS (dmesg: 2920 MB avail memory)
=================================
Four consecutive runs of the fourth command.
Two runs with vm.pageout_oom_seq=120: success. Third and fourth runs
with vm.pageout_oom_seq=12:
- the third run failed almost immediately, before step 1 of 2601
- the fourth run succeeded.
