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 BE859C433F5 for ; Fri, 29 Apr 2022 13:10:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1359706AbiD2NNf (ORCPT ); Fri, 29 Apr 2022 09:13:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59202 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232708AbiD2NNb (ORCPT ); Fri, 29 Apr 2022 09:13:31 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 102176263 for ; Fri, 29 Apr 2022 06:10:08 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id F2C1E210E1; Fri, 29 Apr 2022 13:10:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1651237807; 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=YSUKGyGzwoDnZy6mDw1HX/F1/ubIVoBp40lJ7Epv0gE=; b=NZZc/VvlaC52CYnw+17ZhHs/rSFiOYlm/Uy5PxoHIihg2EVllcr/1RVQWw4Hrj1rAEgOt8 Xfs5V9gSgkm1CqRNNjpDm87xaMnZQqn6YewDxQvztVGyTW/Eo02j1pOUWVaWvp0Zei67+F 4FP3tcU8qMC95kHo06i51VgRQ5uA45k= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 530D513446; Fri, 29 Apr 2022 13:10:06 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id gCgJE67ja2LkcQAAMHmgww (envelope-from ); Fri, 29 Apr 2022 13:10:06 +0000 Date: Fri, 29 Apr 2022 15:10:05 +0200 From: Michal =?iso-8859-1?Q?Koutn=FD?= To: Vasily Averin , Roman Gushchin , Shakeel Butt Cc: Tejun Heo , Jens Axboe , Linus Torvalds , kernel test robot , Alexander Viro , Alexey Dobriyan , Andrei Vagin , Borislav Petkov , Borislav Petkov , Christian Brauner , Dmitry Safonov <0x7f454c46@gmail.com>, "Eric W. Biederman" , Greg Kroah-Hartman , "H. Peter Anvin" , Ingo Molnar , "J. Bruce Fields" , Jeff Layton , Jiri Slaby , Johannes Weiner , Kirill Tkhai , Michal Hocko , Oleg Nesterov , Serge Hallyn , Thomas Gleixner , Vladimir Davydov , Yutian Yang , Zefan Li , Andrew Morton , LKML , lkp@lists.01.org, kernel test robot , "Huang, Ying" , Feng Tang , Zhengjun Xing Subject: Re: [memcg] 0f12156dff: will-it-scale.per_process_ops -33.6% regression Message-ID: <20220429131004.GA22034@blackbody.suse.cz> References: <20210907150757.GE17617@xsang-OptiPlex-9020> <774dee70-69bd-9f95-d197-4cff83e4e633@kernel.dk> <85da8df9-d6ae-5a06-a561-13eaf11344d7@virtuozzo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <85da8df9-d6ae-5a06-a561-13eaf11344d7@virtuozzo.com> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello. On Wed, Sep 08, 2021 at 11:13:57AM +0300, Vasily Averin wrote: > Please keep me informed about these tasks too. Unfortunately I cannot help right now, > however perhaps we will need to backport these patches to OpenVz kernels. Is there any progress around this POSIX lock efficient charging? (Basically I'm just asking whether there's anything to base on now except the former theoretical idea.) Some people give this a security weight [1]. Thanks, Michal [1] https://github.com/kata-containers/kata-containers/issues/3373