linux-kernel - Re: [PATCH 1/3] virtio_balloon: introduce oom-kill invocations

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Message-ID: <02cfd9fb-5481-4ea1-9b43-b1aa24de82d1@redhat.com>
Date: Thu, 18 Apr 2024 12:58:20 +0200
From: David Hildenbrand <david@...hat.com>
To: zhenwei pi <pizhenwei@...edance.com>, linux-kernel@...r.kernel.org,
 linux-mm@...ck.org, virtualization@...ts.linux.dev
Cc: mst@...hat.com, jasowang@...hat.com, xuanzhuo@...ux.alibaba.com,
 akpm@...ux-foundation.org
Subject: Re: [PATCH 1/3] virtio_balloon: introduce oom-kill invocations

On 18.04.24 08:26, zhenwei pi wrote:
> When the guest OS runs under critical memory pressure, the guest
> starts to kill processes. A guest monitor agent may scan 'oom_kill'
> from /proc/vmstat, and reports the OOM KILL event. However, the agent
> may be killed and we will loss this critical event(and the later
> events).
> 
> For now we can also grep for magic words in guest kernel log from host
> side. Rather than this unstable way, virtio balloon reports OOM-KILL
> invocations instead.
> 
> Signed-off-by: zhenwei pi <pizhenwei@...edance.com>

Acked-by: David Hildenbrand <david@...hat.com>

-- 
Cheers,

David / dhildenb