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 A420BC83F12 for ; Tue, 29 Aug 2023 15:05:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237042AbjH2PEx (ORCPT ); Tue, 29 Aug 2023 11:04:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49890 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237172AbjH2PEr (ORCPT ); Tue, 29 Aug 2023 11:04:47 -0400 Received: from torres.zugschlus.de (torres.zugschlus.de [IPv6:2a01:238:42bc:a101::2:100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3F15B199; Tue, 29 Aug 2023 08:04:45 -0700 (PDT) Received: from mh by torres.zugschlus.de with local (Exim 4.96) (envelope-from ) id 1qb0Gn-002a5D-30; Tue, 29 Aug 2023 17:04:41 +0200 Date: Tue, 29 Aug 2023 17:04:41 +0200 From: Marc Haber To: Sean Christopherson Cc: Bagas Sanjaya , linux-kernel@vger.kernel.org, Linux Regressions , Linux KVM , Paolo Bonzini , Tony Lindgren Subject: Re: Linux 6.5 speed regression, boot VERY slow with anything systemd related Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/2.2.9 (2022-11-12) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 29, 2023 at 07:53:45AM -0700, Sean Christopherson wrote: > What is different between the bad host(s) and the good host(s)? E.g. kernel, QEMU, The bad host is an APU ("AMD GX-412TC SOC") with 4 GB of RAM, one of the good hosts is a "Xeon(R) CPU E3-1246 v3" with 32 GB of RAM. Both are somewhat dated due to the darn iptables => nftables migration and still run Debian buster, kernels are identical (a 6.4.12 built in the same container than the 6.4.12 that works and the 6.5 that misbahaves on the test VM), system configuration is from the same ansible playbook, but of course there are differences. But my strongest bet is some weird CPU type issue becuase that's the most blatant difference. Greetings Marc -- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Leimen, Germany | lose things." Winona Ryder | Fon: *49 6224 1600402 Nordisch by Nature | How to make an American Quilt | Fax: *49 6224 1600421