From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 46354C4167B for ; Wed, 29 Nov 2023 09:36:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229717AbjK2Jgl (ORCPT ); Wed, 29 Nov 2023 04:36:41 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35780 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229897AbjK2JZY (ORCPT ); Wed, 29 Nov 2023 04:25:24 -0500 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D6A0710E4 for ; Wed, 29 Nov 2023 01:25:30 -0800 (PST) Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [10.150.64.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 785EA219AB; Wed, 29 Nov 2023 09:25:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1701249929; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=maEght1a46qgiHVXCfLpoV9DyMjUvdyRL12MmWs9td4=; b=bfWAsytcvL52/T5h1UAdfnsHwHiYyfcM1ZbAWzl1r4omVn8pIB2H8P/gynzF1Uy57HN8mR KPWNxt2wAM6aob3t2o1qo1naQxNSkzkgf1+ppLe5KumP8Flj43vvAXHHp/cgmUmeiGAKCV Wio2m/hYQIsgFVJPYK5qktEyVmwVMeI= Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 59CBC13637; Wed, 29 Nov 2023 09:25:29 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id yUTiEokDZ2XsdAAAD6G6ig (envelope-from ); Wed, 29 Nov 2023 09:25:29 +0000 Date: Wed, 29 Nov 2023 10:25:28 +0100 From: Michal Hocko To: Baoquan He Cc: Jiri Bohac , Pingfan Liu , Tao Liu , Vivek Goyal , Dave Young , kexec@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/4] kdump: crashkernel reservation from CMA Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Authentication-Results: smtp-out1.suse.de; none X-Spamd-Result: default: False [-0.80 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; RCVD_COUNT_THREE(0.00)[3]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; NEURAL_HAM_SHORT(-0.20)[-1.000]; RCPT_COUNT_SEVEN(0.00)[8]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; MID_RHS_NOT_FQDN(0.50)[]; RCVD_TLS_ALL(0.00)[]; BAYES_HAM(-0.00)[41.29%] Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed 29-11-23 15:57:59, Baoquan He wrote: [...] > Hmm, Redhat could go in a different way. We have been trying to: > 1) customize initrd for kdump kernel specifically, e.g exclude unneeded > devices's driver to save memory; > 2) monitor device and kenrel memory usage if they begin to consume much > more memory than before. We have CI testing cases to watch this. We ever > found one NIC even eat up GB level memory, then this need be > investigated and fixed. How do you simulate all different HW configuration setups that are using out there in the wild? -- Michal Hocko SUSE Labs