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imho, killing processes because of arc using too much ram which can't be
reclaimed fast enough is a failure in overall memory coordination.
we can set zfs limits as a workaround, yes - but zfs and oomkiller is to
blame !!!
1. zfs should free up memory faster, as memory is also freed from
buffers/caches
2. oomkiller should put pressure on arc or try reclaim pages from that
first, instead of killing kvm processes. maybe oomkiller could be made
arc-aware!?
roland
>On 7/10/2025 11:08 AM, Roland via pve-user wrote:
>if OOM kicks in because half of the ram is being used for
caches/buffers, i would blame OOMkiller or ZFS for tha. The problem
should be resolved at zfs or memory management level.
>Absolutely no!
>You are responsible for giving ZFS the limits. As even described in
the proxmox documentation here:
>https://pve.proxmox.com/wiki/ZFS_on_Linux#sysadmin_zfs_limit_memory_usage
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Am 10.07.25 um 16:49 schrieb dorsy via pve-user:
On 7/10/2025 11:08 AM, Roland via pve-user wrote:
if OOM kicks in because half of the ram is being used for
caches/buffers, i would blame OOMkiller or ZFS for tha. The problem
should be resolved at zfs or memory management level.
Absolutely no!
You are responsible for giving ZFS the limits. As even described in
the proxmox documentation here:
https://pve.proxmox.com/wiki/ZFS_on_Linux#sysadmin_zfs_limit_memory_usage
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