From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [IPv6:2a01:7e0:0:424::9]) by lore.proxmox.com (Postfix) with ESMTPS id 5F7041FF185 for ; Mon, 7 Jul 2025 23:49:37 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 04E03A97B; Mon, 7 Jul 2025 23:50:17 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=soltecsis.com; s=smtp; t=1751924376; bh=sOXXLO6OYoB9/Veg2w0ZY1rbbPiW6rruIFgqF2eAPtU=; h=Date:Subject:To:References:From:In-Reply-To:From; b=utxjWNRpDQB1IiVwer3YAiFDcIhgd356vFoL14ZXESmiElBN5YQD/6jC8pXIa7M+N iO7ibm0goMo9qOZRd0krCfAgRftGWjN2PFLWgSMNicVUB1QbUOXuecHanHPY8nrzQd lzwZsUWNDG9cd5Y4/r2KLuedd4rzTdRbYn6f/Fl4= Message-ID: Date: Mon, 7 Jul 2025 23:39:34 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: es-ES, en-US To: Proxmox VE user list , Marco Gaiarin References: From: Victor Rodriguez Autocrypt: addr=vrodriguez@soltecsis.com; 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See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. RCVD_IN_VALIDITY_RPBL_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to Validity was blocked. See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. RCVD_IN_VALIDITY_SAFE_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to Validity was blocked. See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record Subject: Re: [PVE-User] A less aggressive OOM? X-BeenThere: pve-user@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE user list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Proxmox VE user list Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: pve-user-bounces@lists.proxmox.com Sender: "pve-user" Hi, I would start by analyzing the memory status at the time of the OOM. There should be a some lines in journal/syslog were the kernel writes what the memory looked like and you can figure out why it had to kill a process. Makes few sense that OOM triggers in 64GB hosts with just 24GB configured in VMs and, probably, less real usage. IMHO it's not VMs what fill your memory up to the point of OOM, but some other process, ZFS ARC, maybe even some mem leak. Maybe some process is producing severe memory fragmentation. Regards, On 7/7/25 11:26, Marco Gaiarin wrote: > We have upgraded a set of clusters from PVE6 to PVE8, and we have found that > in newer kernels, OOM is a bit more 'aggressive' and sometime kill a VMs. > > Nodes have plently of RAM (64GB, VMs are 2-3, each 8GB ram), VMs have qemu > agent installed and ballooning enabled, but still sometime OOM happen. > Clearly, if get OOM the main VMs that have the local DNS, we get some > trouble. > > > I've looked in PVE wiki, but found nothing. There's some way to relax OOM, > or control their behaviour? > > In nodes there's no swap, so probably the best thing to do (but the hardest > one ;-) is to setup some swap with a lower swappiness, but i'm seeking > feedback. > > > Thanks. > -- _______________________________________________ pve-user mailing list pve-user@lists.proxmox.com https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-user